PhD(Engineering), Waseda University

粘土鉱物

鉱物

多環芳香族炭化水素

イオン交換

岩石-水相互作用

分子進化工学

触媒

アミノ酸

風化

蛇紋岩

変質

超塩基性岩

PAH

越境汚染

環日本海

蛇紋岩化作用

マグネシウム炭酸塩鉱物

ペプチド

資源開発工学

エアロゾル

高アルカリ

黄砂

オマーン

ハイドロタルサイト

メラノイジン

日本海

生物生態工学

環境技術

吸着

透水性

廃棄物工学

環境鉱物学

地球化学

Environmental MineralogyGeochemistryWaste Engineering

Energy Engineering, Earth resource engineering, Energy sciences

Natural Science, Solid earth sciences

Natural Science, Space and planetary sciences

Bachelor's degree program, School of Engineering

Master's degree program, Graduate School of Engineering

Doctoral (PhD) degree program, Graduate School of Engineering

Sep. 2022, 日本粘土学会, 論文賞

Jun. 2022, 資源地質学会, The Best Article Award

Sep. 2016, 日本粘土学会, 学会賞
佐藤 努

Sep. 2015, 日本粘土学会, 論文賞
佐藤 努

Sep. 2014, 日本粘土学会, 論文賞
佐藤 努

Sep. 2010, 資源・素材学会, 論文賞
佐藤 努

Sep. 2010, 日本粘土学会, 論文賞
佐藤 努

Aug. 2006, 日本鉱物学会, 応用鉱物学賞
佐藤 努

2005, UK-Japan Collaboration Awards-Green Sustainable Chemistry

Sep. 2004, 日本粘土学会, 論文賞
佐藤 努

Sep. 1992, 日本粘土学会, 奨励賞
佐藤 努

Utilization of Cs-Contaminated Fukushima Soil as Natural Pozzolan for Alkali-Activated Materials
Raudhatul Islam Chaerun; Midori Sano; Yusuke Ohya; Pramesti Prihutami; Kanako Toda; Kazuma Kuroda; Ryo Nakabayashi; Isamu Kudo; Kazushige Kato; Masahiro Taniguchi; Ryosuke Kikuchi; Tsubasa Otake; Tsutomu Sato
ACS Sustainable Resource Management, 2, 9, 1797, 1806, American Chemical Society (ACS), 05 Sep. 2025
Scientific journal

Pilot-scale stabilization of toxic metal leachates from zinc plant residues using half-burnt dolomite: implications for remediation at Kabwe legacy mine in Zambia
Walubita Mufalo; Takahiko Arima; Toshifumi Igarashi; Mayumi Ito; Tsutomu Sato; Shingo Tomiyama; Imasiku Nyambe; Marthias Silwamba; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Environmental Geochemistry and Health, 47, 7, Springer Science and Business Media LLC, 16 Jun. 2025
Scientific journal

Assessing the efficacy of phosphate and lime amendments in immobilizing three forms of lead in contaminated soil: An in vivo study on C57/BL6 mice simulating environmentally realistic exposure pathways.
Nyein Chan Soe; Takashi Fujimori; Kenji Shiota; Rio Doya; Walubita Mufalo; Mayumi Ito; Tsutomu Sato; Toshifumi Igarashi; Yoshinori Ikenaka; Mayumi Ishizuka; Shouta M M Nakayama
Chemosphere, 374, 144201, 144201, Apr. 2025, [International Magazine]
English, Scientific journal, Lead (Pb) bioavailability differs depending on the specific Pb species present in the area. Adding organic and inorganic soil amendments can ameliorate the mobility of Pb in the soil. However, there is a scarcity of in vivo studies investigating the impact of these amendments on mammals via environmentally realistic exposure pathways. We evaluated the accumulation of Pb in blood and tissues of mice living on soils spiked with one of three Pb species (hydrocerussite [2PbCO3·Pb(OH)2], lead sulfate [PbSO4], and lead sulfide [PbS]) and compared the efficacy of phosphate (triple super phosphate [TSP] or phosphoric acid) or liming (calcined dolomite) amendments in reducing Pb accumulation from these soils via realistic exposure pathways. The Pb species in the spiked soil were investigated via X-ray absorption near edge structures (XANES) spectroscopy. C57/BL6 mice (six per group) were exposed to both Pb-spiked and amended soils by housing them on the soil for three months and thus simulating realistic exposure pathways. XANES analysis revealed that Pb carbonates were the dominant phase in all Pb-spiked soils. The group exposed to 2PbCO3·Pb(OH)2 had the greatest Pb accumulation in brain, trachea, kidneys, liver, bone, and blood, but not lungs, whereas the PbS-exposed group accumulated more Pb in the lungs. TSP was the most effective chemical stabilizer of the three amendments, facilitating reductions in the 2PbCO3·Pb(OH)2, PbSO4, and PbS exposure groups of 68-88%, 44-62%, and 6-49%, respectively. This suggests that chemical remediation using phosphate sources may be effective for immobilizing various Pb species in soils.

Magnesium silicate hydrate regulates the dissolution of natural ultramafic rocks and associated hydrogen generation at low temperatures
Yoko Ohtomo; Shunta Higashino; Ryosuke Kikuchi; Tsubasa Otake; Tsutomu Sato
GEOCHEMICAL JOURNAL, 59, 5, 207, 223, Geochemical Society of Japan, 2025
Scientific journal

Immobilisation of iodide in alkali-activated materials
Raudhatul Islam Chaerun; Manami Ishimura; Pramesti Prihutami; Xiaobo Niu; Yusuke Ohya; Kazuma Kuroda; Kanako Toda; Ryosuke Kikuchi; Tsubasa Otake; John L. Provis; Yogarajah Elakneswaran; Tsutomu Sato
Chemosphere, 369, 143871, 143871, Elsevier BV, Dec. 2024, [Peer-reviewed]
Scientific journal

Primary Fe isotope signatures record oxidative precipitation in 3.2 Ga ferruginous siliciclastic sedimentary rocks deposited in a shallow ocean environment
Ryohei Suzumeji; Tsubasa Otake; Daizo Yamauchi; Yoko Ohtomo; Takeshi Kakegawa; Christoph Heubeck; Shin ichi Yamasaki; Tsutomu Sato
Precambrian Research, 413, Oct. 2024, [Peer-reviewed]
Scientific journal

Geological conditions and fluid flow history that lead to the development of large clastic dykes in basins: A case study from Kushiro, Japan
Shuji Tamamura; Takuma Murakami; Katsuhiko Kaneko; Tetsuro Yoneda; Tsutomu Sato; Jun Aizawa; Hiroyuki Matsumoto; Kagemi Uchida; Yoshiaki Suzuki; Toshifumi Igarashi
BASIN RESEARCH, 36, 5, Sep. 2024, [Peer-reviewed]
English, Scientific journal

Microanalytical approaches on the silicification process of wood fossil from Jasinga, West Java, Indonesia
Danni Gathot Harbowo; Aswan; Yahdi Zaim; Siti Khodijah Chaerun; Raudhatul Islam Chaerun; Widi Astuti; Tsutomu Sato
Scientific Reports, 14, 1, Springer Science and Business Media LLC, 17 Aug. 2024
Scientific journal

Review of secondary phases formed under natural alkaline conditions at low temperatures and implications for cement–bentonite interactions in radioactive waste repositories
Misato Shimbashi; Shingo Yokoyama; Tsutomu Sato
Clays and Clay Minerals, 72, Cambridge University Press (CUP), 03 Jun. 2024
Scientific journal, Abstract

The alteration of bentonite under alkaline conditions and the subsequent changes in properties such as permeability and self-sealing ability should be evaluated for the performance assessment of radioactive waste repositories. As the period of evaluation for alterations is extremely long, natural analog (NA) studies that can observe long-term phenomena similar to the system of radioactive waste repositories have significant advantages. However, locations that can be set up as NA study sites with significant similarity are limited and should be pursued by localizing analog systems. This literature review summarized studies reporting secondary phases formed at low temperatures (<100°C) under a broader range of natural sites which are chemically similar to the alkaline conditions expected at bentonite in radioactive waste repositories, including near pyrometamorphic rocks, near ophiolites, and in alkaline saline lakes. This review provides insights into the species, formation conditions, and stability of secondary phases that could be formed during cement–bentonite interactions and the timescale for mineralogical transitions from a metastable to a stable phase. The findings could be useful for selecting secondary phases to be considered in reactive transport modeling for predicting cement–bentonite interactions in radioactive waste repositories.

Immobilization Forms of Cadmium and Mercury in a Potassium-Activated Metakaolin-Based Geopolymer
Pramesti Prihutami; Raudhatul Islam Chaerun; Yusuke Ohya; Tsubasa Otake; Ryosuke Kikuchi; Tsutomu Sato
Minerals, 14, 3, 311, 311, MDPI AG, 15 Mar. 2024, [Peer-reviewed]
Scientific journal, Previous studies of cadmium and mercury immobilization in geopolymers have produced inconsistent results due to their different pozzolans, metal concentrations, and mixing procedures. Understanding the effects of these parameters on heavy metal immobilization is key to predicting their long-term stability. In this study, cadmium and mercury were incorporated into a metakaolin-based K-activated geopolymer by three mixing procedures and concentrations of 0.02–1.00 wt.%. The samples were then immersed in water for 90 d to determine their stability. The results show that mercury is readily leached from the geopolymer, but cadmium is retained. Adding the heavy metals in salt form converts the metals into cadmium hydroxide and mercury oxide that reside at the bottom of the geopolymer. Mixing the salts with water forms soluble heavy metals prior to geopolymerization. This procedure produces more-homogeneous geopolymers. Cadmium is associated with silicate and aluminate, giving a better stability, whereas mercury forms mercury oxide. Different cadmium and mercury concentrations do not change the metal speciation as mercury is affected by relativistic contribution.

Effect of chicken manure amendment on lead burden in mice: exposure to lead-spiked soil
Nyein Chan Soe; Yared Beyene Yohannes; Takamitsu Ohigashi; Hokuto Nakata; Chikae Tatsumi; Yoshitaka Uchida; Walubita Mufalo; Mayumi Ito; Tsutomu Sato; Toshifumi Igarashi; Yoshinori Ikenaka; Mayumi Ishizuka; Shouta M. M. Nakayama
Journal of Soils and Sediments, Springer Science and Business Media LLC, 13 Mar. 2024, [Peer-reviewed]
Scientific journal

Mineralogical Evolution of High-pH/Low-pH Cement Pastes in Contact with Seawater
Yutaro Kobayashi; Tsutomu Sato
Minerals, 14, 3, Mar. 2024, [Peer-reviewed]
Scientific journal

Insights on hazardous metal bioaccessibility, and groundwater impacted by Zn residues from a legacy mine and risk evaluation of adjacent soils
Walubita Mufalo; Takahiko Arima; Toshifumi Igarashi; Mayumi Ito; Tsutomu Sato; Shingo Tomiyama; Imasiku Nyambe; Carlito Baltazar Tabelin; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Environmental Geochemistry and Health, 46, 2, Springer Science and Business Media LLC, 06 Feb. 2024, [Peer-reviewed]
Scientific journal

半焼成ドロマイトおよびリン酸塩を用いたカブウェ鉱山鉱さい中の重金属不溶化特性
Takahiko ARIMA; Kenta NOTO; Walubita MUFALO; Toshifumi IGARASHI; Mayumi ITO; Tsutomu SATO; Hokuto NAKATA; Shouta NAKAYAMA; Mayumi ISHIZUKA
Resources Processing, 70, 3, 141, 150, The Resources Processing Society of Japan, 2024, [Peer-reviewed]
Scientific journal

Systematic comparison of Mg K-edge XANES spectra of magnesium-bearing clay minerals and magnesium silicate hydrates: A promising tool for identifying magnesium silicate hydrate in natural samples
Kosuke Inoue; Yuto Nishiki; Keisuke Fukushi; Reo Suma; Tsutomu Sato; Hiroshi Sakuma; Kenji Tamura; Shingo Yokoyama; Misato Shimbashi; Tomoyuki Mizukami; Kensuke Unami; Yohei Noji; Takuma Kitajima; So Fukaya; Yasuo Takeichi; Shohei Yamashita; Hiroki Suga; Yoshio Takahashi
Applied Clay Science, 245, 107152, 01 Dec. 2023, [Peer-reviewed]
English, Scientific journal

Coal mine wastes: Effective mitigation of coal waste slurry and acid mine drainage through bioflocculation using mixotrophic bacteria as bioflocculants
Siti Khodijah Chaerun; Erian Jeremy; Raudhatul Islam Chaerun; Riri Lidya Fathira; Muhammad Iqbal Toynbee; Supandi Supandi; Tsutomu Sato
International Journal of Coal Geology, 279, 104370, 104370, Elsevier BV, Nov. 2023
Scientific journal

Development of metakaolin-based geopolymer for selenium oxyanions uptake through in-situ ettringite formation
Xiaobo Niu; Yogarajah Elakneswaran; Raudhatul Islam Chaerun; Chuwei Fang; Naoki Hiroyoshi; John L. Provis; Tsutomu Sato
Separation and Purification Technology, 324, 124530, 124530, Elsevier BV, Nov. 2023, [Peer-reviewed]
Scientific journal

Immobilization of Pb and Zn leached from mining residue materials in Kabwe, Zambia: Performance of calcined dolomite in column experiments
Walubita Mufalo; Pawit Tangviroon; Takahiko Arima; Toshifumi Igarashi; Mayumi Ito; Tsutomu Sato; Kenta Noto; Takeshi Kawashima; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Journal of Geochemical Exploration, 249, 107209, 107209, Elsevier BV, Jun. 2023, [Peer-reviewed]
Scientific journal

Overlooked effect of ordinary inorganic ions on polyaluminum-chloride coagulation treatment
Yize Chen; Yoshihiko Matsui; Tsutomu Sato; Nobutaka Shirasaki; Taku Matsushita
Water Research, 235, 119909, 119909, Elsevier BV, May 2023
Scientific journal

The formation of schwertmannite colloids and natural remediation of toxic elements from Shojin River, Hokkaido, Japan
Frances Chikanda; Sereyroith Tum; Tatsuya Matsui; Susumu Norota; Tsubasa Otake; Tsutomu Sato
Resource Geology, 73, 1, Wiley, Jan. 2023, [Peer-reviewed]
Scientific journal

Formation of magnesium silicate hydrate (M-S-H) at pH 10 and 50°C in open-flow systems
Yuto Nishiki; Jordi Cama; Tsubasa Otake; Ryosuke Kikuchi; Misato Shimbashi; Tsutomu Sato
Applied Geochemistry, 148, 105544, 105544, Elsevier BV, Jan. 2023, [Peer-reviewed]
Scientific journal

Difference in expansion and dehydration behaviors between NH4- and K-montmorillonite
Ryohei Kawakita; Akito Saito; Hiroshi Sakuma; Sohtaro Anraku; Ryosuke Kikuchi; Tsubasa Otake; Tsutomu Sato
Applied Clay Science, 231, 106722, 106722, Elsevier BV, Jan. 2023
Scientific journal

Retention mechanism of cesium in chabazite embedded into metakaolin-based alkali activated materials
Raudhatul Islam Chaerun; Natatsawas Soonthornwiphat; Kanako Toda; Kazuma Kuroda; Xiaobo Niu; Ryosuke Kikuchi; Tsubasa Otake; Yogarajah Elakneswaran; John L. Provis; Tsutomu Sato
Journal of Hazardous Materials, 440, 129732, 129732, Elsevier BV, Oct. 2022, [Peer-reviewed]
English, Scientific journal

Effects of lignosulfonate on synthesis products of the pozzolanic reaction
Kanako Toda; Daisuke Minato; Takumi Saito; Ryosuke Kikuchi; Tsubasa Otake; Tsutomu Sato
Cement, 9, 100042, 100042, Elsevier BV, Sep. 2022, [Peer-reviewed], [International Magazine]
English, Scientific journal

Natural glass alteration under a hyperalkaline condition for about 4000 years
Ryosuke Kikuchi; Tsutomu Sato; Naoki Fujii; Misato Shimbashi; Carlo A. Arcilla
Scientific Reports, 12, 1, 16012, Sep. 2022, [Peer-reviewed]
English, Scientific journal

Characteristics and Formation Pathways of Iron- and Magnesium-Silicate-Hydrates and Smectites Under Natural Alkaline Conditions
Misato Shimbashi; Shingo Yokoyama; Ryosuke Kikuchi; Tsubasa Otake; Tsutomu Sato
Clays and Clay Minerals, 70, 4, 492, 513, Springer Science and Business Media LLC, 23 Aug. 2022, [Peer-reviewed]
English, Scientific journal

Low-Temperature Hydrothermal Synthesis of Chromian Spinel from Fe-Cr Hydroxides Using a Flow-Through Reactor
Ohtomo, Y; Yang, J; Nishikata, M; Kawamoto, D; Kimura, Y; Otake, T; Sato, T
Minerals, 12, 1110, 1110, 1110, MDPI AG, Aug. 2022, [Peer-reviewed]
English, Scientific journal, Recent studies have suggested that a chromian spinel can be formed under natural hydrothermal conditions; however, the required conditions, process, and associated redistribution of Cr are still poorly understood. Here, chromian spinel formation was performed by Fe-Cr hydroxides alteration with an Fe2+(aq) supply at 150, 170, and 200 °C and 5 MPa simulating the diagenetic process. The flow-through system enabled the Fe2+(aq) supply to be leached from the magnetite by an acidic solution to synthesize Fe-Cr hydroxides as the starting material with two reaction cells, flow lines, heaters, and a high-performance liquid chromatography (HPLC) pump. The accuracy of the temperature measurement was confirmed based on the amorphous silica solubility. Mineralogical analysis of solid samples recovered from the reaction cell indicated that the chromian spinel was formed between 150 and 170 °C from Fe-Cr hydroxides through goethite with a simultaneous hematite formation, while Mössbauer spectra showed that a large quantity of Fe-Cr ferrihydrites still remained after the experiments probably because of the Cr addition to the stability of ferrihydrites. The Cr/Fe ratio of the chromian spinel was smaller than that of the bulk of the Fe-Cr ferrihydrites and equivalent to Cr-rich magnetite, suggesting a redistribution of Cr during the transformation from goethite to synthesized spinel under the hydrothermal conditions.

Adsorption behaviour of simulant radionuclide cations and anions in metakaolin-based geopolymer
Xiaobo Niu; Yogarajah Elakneswaran; Chaerun Raudhatul Islam; John L. Provis; Tsutomu Sato
Journal of Hazardous Materials, 429, 128373, 128373, Elsevier BV, May 2022, [Peer-reviewed]
Scientific journal

Impacts of Surface Water on Windborne Lead Dispersion from the Zinc Plant Leach Residue in Kabwe, Zambia
Shinsaku Nakamura; Toshifumi Igarashi; Yoshitaka Uchida; Mayumi Ito; Kazuyo Hirose; Tsutomu Sato; Walubita Mufalo; Meki Chirwa; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Minerals, 12, 5, May 2022, [Peer-reviewed]
Scientific journal

Alkaline Leaching and Concurrent Cementation of Dissolved Pb and Zn from Zinc Plant Leach Residues
Marthias Silwamba; Mayumi Ito; Naoki Hiroyoshi; Carlito Baltazar Tabelin; Ryota Hashizume; Tomoki Fukushima; Ilhwan Park; Sanghee Jeon; Toshifumi Igarashi; Tsutomu Sato; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Minerals, 12, 4, Apr. 2022, [Peer-reviewed]
Scientific journal

Permeability change in macro-fractured granite using water including clay
Yoshitaka NARA; Masaji KATO; Tsutomu SATO; Masanori KOHNO; Toshinori SATO
Journal of MMIJ, 138, 4, 44, 50, Apr. 2022, [Peer-reviewed]
Scientific journal

Seasonal effects of natural attenuation on drainage contamination from artisanal gold mining, Cambodia: Implication for passive treatment
Sereyroith Tum; Kanako Toda; Tatsuya Matsui; Ryosuke Kikuchi; Sitha Kong; Panha Meas; Unsovath Ear; Yoko Ohtomo; Tsubasa Otake; Tsutomu Sato
Science of The Total Environment, 806, 150398, 150398, Elsevier BV, Feb. 2022, [Peer-reviewed]
Scientific journal

Mineralogical evolution of a weathering profile in the Tagaung Taung Ni laterite deposit: significance of smectite in the formation of high-grade Ni ore in Myanmar
Ayaka Murofushi; Tsubasa Otake; Kenzo Sanematsu; Kyaw Zay Ya; Akane Ito; Ryosuke Kikuchi; Tsutomu Sato
Mineralium Deposita, Springer Science and Business Media LLC, 12 Jan. 2022, [Peer-reviewed]
Scientific journal

In Situ EXAFS Study of Sr Adsorption on TiO2(110) under High Ionic Strength Wastewater Conditions
Arjen van Veelen; Paul C. M. Francisco; Nicholas P. Edwards; Julian Frederick W. Mosselmans; Tsutomu Sato; Roy A. Wogelius
Minerals, 11, 12, 1386, 1386, MDPI AG, 08 Dec. 2021
Scientific journal, In order to provide important details concerning the adsorption reactions of Sr, batch reactions and a set of both ex situ and in situ Grazing Incidence X-ray Absorption Fine Structure (GIXAFS) adsorption experiments were completed on powdered TiO2 and on rutile(110), both reacted with either SrCl2 or SrCO3 solutions. TiO2 sorption capacity for strontium (Sr) ranges from 550 ppm (SrCl2 solutions, second order kinetics) to 1400 ppm (SrCO3 solutions, first order kinetics), respectively, and is rapid. Sr adsorption decreased as a function of chloride concentration but significantly increased as carbonate concentrations increased. In the presence of carbonate, the ability of TiO2 to remove Sr from the solution increases by a factor of ~4 due to rapid epitaxial surface precipitation of an SrCO3 thin film, which registers itself on the rutile(110) surface as a strontianite-like phase (d-spacing 2.8 Å). Extended X-ray Absorption Fine Structure (EXAFS) results suggest the initial attachment is via tetradental inner-sphere Sr adsorption. Moreover, adsorbates from concentrated SrCl2 solutions contain carbonate and hydroxyl species, which results in both inner- and outer-sphere adsorbates and explains the reduced Sr adsorption in these systems. These results not only provide new insights into Sr kinetics and adsorption on TiO2 but also provide valuable information concerning potential improvements in effluent water treatment models and are pertinent in developing treatment methods for rutile-coated structural materials within nuclear power plants.

Solid-Phase Partitioning and Leaching Behavior of Pb and Zn from Playground Soils in Kabwe, Zambia.
Walubita Mufalo; Pawit Tangviroon; Toshifumi Igarashi; Mayumi Ito; Tsutomu Sato; Meki Chirwa; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Toxics, 9, 10, 04 Oct. 2021, [Peer-reviewed], [International Magazine]
English, Scientific journal

Evaluation of dispersion of lead-bearing mine wastes in kabwe district, zambia
Shinsaku Nakamura; Toshifumi Igarashi; Yoshitaka Uchida; Mayumi Ito; Kazuyo Hirose; Tsutomu Sato; Walubita Mufalo; Meki Chirwa; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Minerals, 11, 8, Aug. 2021, [Peer-reviewed]
Scientific journal

Geochemical constraints on the mobilization of Ni and critical metals in laterite deposits, Sulawesi, Indonesia: A mass‐balance approach
Akane Ito; Tsubasa Otake; Adi Maulana; Kenzo Sanematsu; Sufriadin; Tsutomu Sato
Resource Geology, 71, 3, 255, 282, Wiley, Jul. 2021, [Peer-reviewed]
Scientific journal

The formation of Fe colloids and layered double hydroxides as sequestration agents in the natural remediation of mine drainage
Frances Chikanda; Tsubasa Otake; Aoi Koide; Akane Ito; Tsutomu Sato
Science of The Total Environment, 774, 145183, 145183, Elsevier BV, Jun. 2021, [Peer-reviewed]
Scientific journal

Large Fe isotope fractionations in sulfide ores and ferruginous sedimentary rocks from the Kuroko volcanogenic massive sulfide deposits in the Hokuroku district, northeast Japan
Tsubasa Otake; Ryoichi Yamada; Ryohei Suzuki; Shunsuke Nakamura; Akane Ito; Ki-Cheol Shin; Tsutomu Sato
Geochimica et Cosmochimica Acta, 295, 49, 64, Elsevier BV, Feb. 2021, [Peer-reviewed]
Scientific journal

Importance of temperature control in surrounding environment during permeability test for measuring hydraulic constants of rock
M. Kato; Y. Nara; D. Fukuda; M. Kohno; Toshinori Sato; Tsutomu Sato; M. Takahashi
Journal of the Society of Materials Science, Japan, 70, 4, 300, 306, 2021, [Peer-reviewed]
English, Scientific journal

Geochemical behaviour of heavy metals in sludge effluents and solid deposits on the Zambian Copperbelt: Implication for effluent treatment and sludge reuse
Cryton Phiri; Daiki Shimazui; Tsubasa Otake; Ryosuke Kikuchi; Isaac Chintu; Meki Chirwa; Lawrence Kalaba; Imasiku Nyambe; Tsutomu Sato
Science of The Total Environment, 769, 144342, 144342, Elsevier BV, Dec. 2020, [Peer-reviewed]
Scientific journal

Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine
Wilson Mwandira; Kazunori Nakashima; Satoru Kawasaki; Allison Arabelo; Kawawa Banda; Imasiku Nyambe; Meki Chirwa; Mayumi Ito; Tsutomu Sato; Toshifumi Igarashi; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Scientific Reports, 10, 1, Springer Science and Business Media LLC, Dec. 2020, [Peer-reviewed]
Scientific journal, The present study investigated biosorption of Pb (II) and Zn (II) using a heavy metal tolerant bacterium Oceanobacillus profundus KBZ 3-2 isolated from a contaminated site. The effects of process parameters such as effect on bacterial growth, pH and initial lead ion concentration were studied. The results showed that the maximum removal percentage for Pb (II) was 97% at an initial concentration of 50 mg/L whereas maximum removal percentage for Zn (II) was at 54% at an initial concentration of 2 mg/L obtained at pH 6 and 30 °C. The isolated bacteria were found to sequester both Pb (II) and Zn (II) in the extracellular polymeric substance (EPS). The EPS facilitates ion exchange and metal chelation-complexation by virtue of the existence of ionizable functional groups such as carboxyl, sulfate, and phosphate present in the protein and polysaccharides. Therefore, the use of indigenous bacteria in the remediation of contaminated water is an eco-friendly way of solving anthropogenic contamination.

Effect of Soil Organic Matters in Dredged Soils to Utilization of their Mixtures Made with a Steel Slag
Kanako Toda; Ryosuke Kikuchi; Tsubasa Otake; Satoshi Nishimura; Yuzoh Akashi; Michihiro Aimoto; Takeshi Kokado; Tsutomu Sato
Materials, 13, 23, 5450, 5450, MDPI AG, 30 Nov. 2020, [Peer-reviewed]
Scientific journal, Dredged soils have been used as construction materials by alkaline activation with steel slag (steel slag-dredged soil mixtures) at harbors. Such mixtures develop strength chiefly by calcium silicate hydrate (C-S-H) formation by the pozzolanic reaction. However, the strength of such mixtures is unpredictable, and in some cases, mixtures have been too soft for the intended engineering application. An identification of strength development indicators would accelerate evaluation processes for strength development to facilitate and promote the utilization of such materials. This paper focuses on the relationship between the characteristics of soil organic matters in dredged soils and the strength development of the mixtures by a comparison of eight dredged soils collected from eight different Japanese harbors. The characteristics of the soil organic matters were identified to determine as indicators of mixtures with weak strength development, i.e., enriched sulfur content in extracted soil organic matter (humic acid) fraction, and the N/C ratio of humic acid similar to land humic acid standards. Increases in the validated fraction of dredged soils and steel slag by replacing fractions disadvantageous to construction resources would contribute to reduce waste production, which would lower the environmental impact of the use, aiming to achieve sustainable utilization of such materials.

Encapsulation of Sr-loaded titanate spent adsorbents in potassium aluminosilicate geopolymer
Natatsawas Soonthornwiphat; Yutaro Kobayashi; Kanako Toda; Kazuma Kuroda; Chaerun Raudhatul Islam; Tsubasa Otake; Yogarajah Elakneswaran; John L. Provis; Tsutomu Sato
Journal of Nuclear Science and Technology, 57, 10, 1181, 1188, Informa UK Limited, 02 Oct. 2020, [Peer-reviewed]
Scientific journal

Immobilization of Lead and Zinc Leached from Mining Residual Materials in Kabwe, Zambia: Possibility of Chemical Immobilization by Dolomite, Calcined Dolomite, and Magnesium Oxide
Pawit Tangviroon; Kenta Noto; Toshifumi Igarashi; Takeshi Kawashima; Mayumi Ito; Tsutomu Sato; Walubita Mufalo; Meki Chirwa; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
MINERALS, 10, 9, Sep. 2020, [Peer-reviewed]
English, Scientific journal

Formation of Natural Silicate Hydrates by the Interaction of Alkaline Seepage and Sediments Derived from Serpentinized Ultramafic Rocks at Narra, Palawan, the Philippines
Misato Shimbashi; Shingo Yokoyama; Yasutaka Watanabe; Tsutomu Sato; Tsubasa Otake; Ryosuke Kikuchi; Minoru Yamakawa; Naoki Fujii
Minerals, 10, 8, 719, 719, MDPI AG, 17 Aug. 2020, [Peer-reviewed]
Scientific journal, In radioactive waste disposal facilities, low-permeability engineered barrier materials are important for inhibiting radionuclide migration. However, dissolution–precipitation reactions under alkaline conditions change the permeability of engineered barriers. To understand long-term dissolution–precipitation reactions under alkaline conditions in chemically complex systems, trenches and drill holes were excavated at Narra in Palawan, where alkaline fluids (pH > 11) have been naturally produced, seeping into clastic sediments derived from serpentinized ultramafic rocks and gabbro of Palawan ophiolite. Interaction between the alkaline seepage and clastic sediments, which have been deposited since 15,000 radiocarbon years before present (14C yr BP), led to dissolution of minerals and the precipitation of Si-bearing phases which were divided into two main categories: Fe-Mg-Si infillings and Ca-Si infillings. The former category was composed of iron-magnesium-silicate-hydrate (F-M-S-H) and a nontronite-like mineral and was widely recognized in the clastic sediments. The nontronite-like mineral likely formed by interaction between silicates and alkaline seepage mixed with infiltrated seawater, whereas F-M-S-H formed by the reaction of silicates with alkaline seepage in the absence of seawater infiltration. Ca-Si infillings included 14 Å tobermorite and were precipitated from alkaline seepage combined with the Ca and Si supplied by the dissolution of calcite and silicates in the clastic sediments.

Detoxification of lead-bearing zinc plant leach residues from Kabwe, Zambia by coupled extraction-cementation method
Marthias Silwamba; Mayumi Ito; Naoki Hiroyoshi; Carlito Baltazar Tabelin; Tomoki Fukushima; Ilhwan Park; Sanghee Jeon; Toshifumi Igarashi; Tsutomu Sato; Imasiku Nyambe; Meki Chirwa; Kawawa Banda; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 8, 4, Aug. 2020, [Peer-reviewed]
English, Scientific journal

Cellulose-metallothionein biosorbent for removal of Pb(II) and Zn(II) from polluted water
Wilson Mwandira; Kazunori Nakashima; Yuki Togo; Tsutomu Sato; Satoru Kawasaki
Chemosphere, 246, Elsevier Ltd, 01 May 2020, [Peer-reviewed]
English, Scientific journal

Recovery of Lead and Zinc from Zinc Plant Leach Residues by Concurrent Dissolution-Cementation Using Zero-Valent Aluminum in Chloride Medium
Marthias Silwamba; Mayumi Ito; Naoki Hiroyoshi; Carlito Baltazar Tabelin; Ryota Hashizume; Tomoki Fukushima; Ilhwan Park; Sanghee Jeon; Toshifumi Igarashi; Tsutomu Sato; Meki Chirwa; Kawawa Banda; Imasiku Nyambe; Hokuto Nakata; Shouta Nakayama; Mayumi Ishizuka
Metals, 10, 4, 531, 531, MDPI AG, 20 Apr. 2020, [Peer-reviewed]
Scientific journal, Zinc plant leach residues (ZPLRs) contain significant amounts of metal compounds of lead (Pb), zinc (Zn), iron (Fe), etc., hence, they are considered as a secondary source of metals. On the other hand, ZPLRs are regarded as hazardous materials because they contain heavy metals that pollute the environment. Resources and environmental concerns of ZPLRs were addressed in this study by removing/recovering Pb and Zn using a concurrent dissolution and cementation technique. To cement the dissolved Pb and Zn in leaching pulp, zero-valent aluminum (ZVAl) was added during ZPLRs leaching in the hydrochloric (HCl)–sodium chloride (NaCl) solution. The resulting cemented metals were agglomerated and separated by sieving. Lead removal increased with increasing both NaCl and HCl concentrations. However, when ZVAl was added, significant Pb removal was achieved at a low concentration. Zinc was not cemented out of the pulp using ZVAl and its recovery from ZPLRs was dependent on the HCl concentration only. By applying a concurrent dissolution and cementation technique, both Pb and Zn were removed using a low concentration of NaCl, and most importantly Pb—the most toxic metal in ZPLRs—was captured and separated before the solid-liquid separation, hence, eliminating the need for extensive washing of the generated residues to remove the inherent residual solution.

Geochemical characteristics of ores and surface waters for environmental risk assessment in the Pinpet iron deposit, southern Shan State, Myanmar
K. Zay Ya; T. Otake; A. Koide; K. Sanematsu; T. Sato
Resource Geology, 70, Feb. 2020, [Peer-reviewed]
English, Scientific journal

Solidification of sand by Pb(II)-tolerant bacteria for capping mine waste to control metallic dust: Case of the abandoned Kabwe Mine, Zambia.
Mwandira W; Nakashima K; Kawasaki S; Ito M; Sato T; Igarashi T; Chirwa M; Banda K; Nyambe I; Nakayama S; Nakata H; Ishizuka M
Chemosphere, 228, 17, 25, Aug. 2019, [Peer-reviewed]
Scientific journal

Magmatic-hydrothermal processes associated with Rare Earth Element enrichment in the Kangankunde carbonatite complex, Malawi
F. Chikanda; T. Otake; Y. Ohtomo; A. Ito; T. D. Yokoyama; T. Sato
Minerals, 9, 7, 442, Jul. 2019, [Peer-reviewed]
English, Scientific journal

Efficacy of biocementation of lead mine waste from the Kabwe Mine site evaluated using Pararhodobacter sp.
Wilson Mwandira; Kazunori Nakashima; Satoru Kawasaki; Mayumi Ito; Tsutomu Sato; Toshifumi Igarashi; Kawawa Banda; Meki Chirwa; Imasiku Nyambe; Shouta Nakayama; Mayumi Ishizuka
Environmental science and pollution research international, 26, 15, 15653, 15664, May 2019, [Peer-reviewed], [International Magazine]
English, Scientific journal, Biocementation of hazardous waste is used in reducing the mobility of contaminants, but studies on evaluating its efficacy have not been well documented. Therefore, to evaluate the efficacy of this method, physicochemical factors affecting stabilized hazardous products of in situ microbially induced calcium carbonate precipitation (MICP) were determined. The strength and leach resistance were investigated using the bacterium Pararhodobacter sp. Pb-contaminated kiln slag (KS) and leach plant residue (LPR) collected from Kabwe, Zambia, were investigated. Biocemented KS and KS/LPR had leachate Pb concentrations below the detection limit of < 0.001 mg/L, resisted slaking, and had maximum unconfined compressive strengths of 8 MPa for KS and 4 MPa for KS/LPR. Furthermore, biocemented KS and KS/LPR exhibited lower water absorption coefficient values, which could potentially reduce the water transportation of Pb2+. The results of this study show that MICP can reduce Pb2+ mobility in mine wastes. The improved physicochemical properties of the biocemented materials, therefore, indicates that this technique is an effective tool in stabilizing hazardous mine wastes and, consequently, preventing water and soil contamination.

Alkali aluminosilicate geopolymers as binders to encapsulate strontium-selective titanate ion-exchangers
Xinyuan Ke; Susan A. Bernal; Tsutomu Sato; John L. Provis
Dalton Transactions, 48, 32, 12116, 12126, Royal Society of Chemistry (RSC), 2019
Scientific journal,

Geopolymer cements can be used to solidify strontium-contaminated ion exchanger particles, forming a stable monolith potentially suitable for final disposal.

XAFS study of Sb and As in Cretaceous–Tertiary boundary sediments: an index of soiling of the global environment with dust and ashes from impact ejecta falls
Hidetomo HONGU; Akira YOSHIASA; Tsubasa TOBASE; Maki OKUBE; Kazumasa SUGIYAMA; Tsutomu SATO
Journal of Mineralogical and Petrological Sciences, 114, 5, 224, 230, Japan Association of Mineralogical Sciences, 2019
Scientific journal

Radiocesium distribution in aggregate-size fractions of cropland and forest soils affected by the Fukushima nuclear accident
Jun Koarashi; Syusaku Nishimura; Mariko Atarashi-Andoh; Takeshi Matsunaga; Tsutomu Sato; Seiya Nagao
Chemosphere, 205, 147, 155, Elsevier Ltd, 01 Aug. 2018, [Peer-reviewed]
English, Scientific journal

Key Factors Affecting Strength Development of Steel Slag-Dredged Soil Mixtures
Kanako Toda; Haruna Sato; Nilan Weerakoon; Tsubasa Otake; Satoshi Nishimura; Tsutomu Sato
Minerals, 8, 5, 174, 174, MDPI AG, 24 Apr. 2018, [Peer-reviewed]
English, Scientific journal

Mechanisms of Se(IV) Co-precipitation with Ferrihydrite at Acidic and Alkaline Conditions and Its Behavior during Aging
Paul Clarence M. Francisco; Tsutomu Sato; Tsubasa Otake; Takeshi Kasama; Shinichi Suzuki; Hideaki Shiwaku; Tsuyoshi Yaita
Environmental Science and Technology, 52, 8, 4817, 4826, American Chemical Society, 17 Apr. 2018, [Peer-reviewed]
English, Scientific journal

Dissolved silica effects on adsorption and Co-precipitation of Sb(III) and Sb(V) with ferrihydrite
Shuang Zhou; Tsutomu Sato; Tsubasa Otake
Minerals, 8, 3, 101, MDPI AG, 05 Mar. 2018, [Peer-reviewed]
English, Scientific journal

Application of transient pulse method to permeability measurement for clay
Masaji Kato; Yoshitaka Nara; Yuki Okazaki; Masanori Kohno; Toshinori Sato; Tsutomu Sato; Manabu Takahashi
Zairyo/Journal of the Society of Materials Science, Japan, 67, 3, 318, 323, Society of Materials Science Japan, 01 Mar. 2018, [Peer-reviewed]
Japanese, Scientific journal

Effect of dissolved silica on immobilization of boron by magnesium oxide
Shoko Nozawa; Tsutomu Sato; Tsubasa Otake
Minerals, 8, 2, 76, MDPI AG, 24 Feb. 2018, [Peer-reviewed]
English, Scientific journal

Fulvic acid anchored layered double hydroxides: A multifunctional composite adsorbent for the removal of anionic dye and toxic metal
Lei Li; Guangxia Qi; Bangda Wang; Dongbei Yue; Yi Wang; Tsutomu Sato
JOURNAL OF HAZARDOUS MATERIALS, 343, 19, 28, Feb. 2018, [Peer-reviewed]
English, Scientific journal

Comparison of strontium retardation for kaolinite, illite, vermiculite and allophane
Zigong Ning; Munehide Ishiguro; Luuk K. Koopal; Tsutomu Sato; Jun’ichi Kashiwagi
J. Radioanalytical and Nuclear Chemistry, 317, 409, 419, 2018, [Peer-reviewed]
English, Scientific journal

Stiffness and strength mobilization in steel slag-mixed dredged clays in early curing
Weerakoon, N; Nishimura, S; Sato, H; Toda, K; Sato, T; Arai, Y
Ground Improvement, AoP, 2018, [Peer-reviewed]
English

ナチュラルアナログ研究のすゝめ
佐藤 努
原子力バックエンド研究, 25, 2, 113, 118, 2018, [Peer-reviewed]
Japanese, Scientific journal

Permeability of granite including macro-fracture naturally filled with fine-grained minerals
Nara, Y; Kato, M; Niri, R; Kohno, M; Sato, T; Fukuda, D; Sato, T; Takahashi, M
Pure and Applied Geophysics., 175, 3, 917, 927, 2018, [Peer-reviewed]
English, Scientific journal

Dissolution Behavior of Lead Borate Glass under Simulated Geological Disposal Conditions
Atsushi Mukunoki; Takahiro Kikuchi; Tamotsu Chiba; Tomofumi Sakuragi; Toshihiro Kogure; Tsutomu Sato
MRS Advances, 3, 21, 1139, 1145, Materials Research Society, 2018, [Peer-reviewed]
English, International conference proceedings

Application of the transient pulse method to measure clay permeability
Kato, M; Nara, Y; Okazaki, Y; Kohno, M; Sato, T; Sato, T; Takahashi, M
Materials Transaction, 59, 9, 1427, 1432, 2018, [Peer-reviewed]
English, Scientific journal

Applied mineralogy for recovery from the accident of Fukushima Daiichi Nuclear Power Station
Tsutomu Sato
Highlights in Applied Mineralogy, 153, 169, Walter de Gruyter GmbH, 18 Dec. 2017, [Peer-reviewed]
English, In book

Effect of Flowing Water on Sr Sorption Changes of Hydrous Sodium Titanate
Youko Takahatake; Atsuhiro Shibata; Kazunori Nomura; Tsutomu Sato
MINERALS, 7, 12, 247, 261, Dec. 2017, [Peer-reviewed]
English, Scientific journal

Geochemical signatures and processes in a stream contaminated by heavy mineral processing near Ipoh city, Malaysia
Akane Ito; Tsubasa Otake; Ki-Cheol Shin; Kamar Shah Ariffin; Fei-Yee Yeoh; Tsutomu Sato
APPLIED GEOCHEMISTRY, 82, 89, 101, Jul. 2017, [Peer-reviewed]
English, Scientific journal

A novel method for remediation of nickel containing wastewater at neutral conditions
Haruko Hase; Toru Nishiuchi; Tsutomu Sato; Tsubasa Otake; Tsuyoshi Yaita; Tohru Kobayashi; Tetsuro Yoneda
JOURNAL OF HAZARDOUS MATERIALS, 329, 49, 56, May 2017, [Peer-reviewed]
English, Scientific journal

Microscopic observations of chromian spinel synthesized in a low temperature hydrothermal environment
Nishikata Miu; Ohtomo Yoko; Otake Tsubasa; Kimura Yuki; Kawamoto Daisuke; Sato Tsutomu
Abstracts of Annual Meeting of the Geochemical Society of Japan, 64, 310, 310, GEOCHEMICAL SOCIETY OF JAPAN, 2017
Japanese,

Microstructure and geochemistry of organic matters in banded iron formations, Moodies Group, Barberton Green stone Belt, South Africa
Nakajima Ryo; Ohtomo Yoko; Otake Tsubasa; Kakegawa Takeshi; Sato Tsutomu
Abstracts of Annual Meeting of the Geochemical Society of Japan, 64, 308, 308, GEOCHEMICAL SOCIETY OF JAPAN, 2017
Japanese,

Laboratory estimation of stiffness and strength mobilization in steel slag-mixed dredged clays with curing time
Weerakoon, N; Nishimura, S; Sato, H; Toda, K; Sato, T; Arai, Y
Proceedings of the 3rd International Conference on Ground Improvement and Ground Control, Hangzhou, 2017
English

Key Factors of Metastable Formation For Strength Development In Steel Slag-Dredged Soil Mixtures
Toda, K; Otake, T; Sato, T; Weerakoon, N; Sato, H; Nishimura S
International Symposium on Earth Resources Management & Environment, Colombo, 2017
English

Effect of silica-bearing phases in dredged soil on the strength development of steel slag-dredged soil mixtures
Toda, K; Arai, Y; Otake, T; Sato, T; Weerakoon, N; Sato, H; Nishimura S
16th International Clay Conference, Granada, 2017
English

Factors Affecting to the Viscosity of Montmorillonite/Water Suspension(3)Modes of Particle Association in Montmorillonite Suspensions
鈴木啓三; 佐藤努; 米田哲朗
粘土科学, 55, 2, 31, 41, 日本粘土学会, 2017, [Peer-reviewed]
Japanese, Scientific journal

Geochemical Factors for Secondary Mineral Formation at Naturally-Occurring Hyperalkaline Spring in Oman Ophiolite
安楽総太郎; 松原勇武; 森本和也; 佐藤努
粘土科学, 55, 2, 17, 30, 日本粘土学会, 2017, [Peer-reviewed]
Japanese, Scientific journal

Strontium adsorption and penetration in kaolinite at low Sr2+ concentration
Zigong Ning; Munehide Ishiguro; Luuk K. Koopal; Tsutomu Sato; Jun'ichi Kashiwagi
SOIL SCIENCE AND PLANT NUTRITION, 63, 1, 14, 17, 2017, [Peer-reviewed]
English, Scientific journal

icrostructural properties of hardened cement paste blended with coal fly ash, sugar mill lime sludge and rice hull ash
Opiso, E; Sato; Otake, T
Advances in Concrete Construction,, 5, 3, 289, 301, 2017, [Peer-reviewed]
English, Scientific journal

Adsorption and post adsorption behavior of schwertmannite with various oxyanions
Khamphila, K; Kodama, R; Sato, T; Otake, T
J. Min. and Mat. Character. Eng., 5, 90, 106, 2017, [Peer-reviewed]
English, Scientific journal

土壌のpH緩衝作用とそのモデリング
佐藤努; 野澤笑子; 西田崇人
土壌の物理性, 135, 41, 46, 2017, [Peer-reviewed], [Invited]
Japanese, Scientific journal

土壌の溶融生成物の鉱物学的および化学的特性
万福 裕造; 八田 珠郎; 矢板 毅; 佐藤 努
粘土科学, 56, 28, 40, 2017, [Peer-reviewed]
Japanese, Scientific journal

Year-round variations in the fluvial transport load of particulate Cs-137 in a forested catchment affected by the Fukushima Daiichi Nuclear Power Plant accident
Takeshi Matsunaga; Takahiro Nakanishi; Mariko Atarashi-Andoh; Erina Takeuchi; Kotomi Muto; Katsunori Tsuduki; Syusaku Nishimura; Jun Koarashi; Shigeyoshi Otosaka; Tsutomu Sato; Yoshiki Miyata; Seiya Nagao
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 310, 2, 679, 693, Nov. 2016, [Peer-reviewed]
English, Scientific journal

Kinetics of Fe3+ mineral crystallization from ferrihydrite in the presence of Si at alkaline conditions and implications for nuclear waste disposal
Paul Clarence M. Francisco; Tsutomu Sato; Tsubasa Otake; Takeshi Kasama
AMERICAN MINERALOGIST, 101, 9-10, 2057, 2069, Sep. 2016, [Peer-reviewed]
English, Scientific journal

Mineralogical aspects of interstratified chlorite-smectite associated with epithermal ore veins: A case study of the Todoroki Au-Ag ore deposit, Japan
T. Yoneda; T. Watanabe; T. Sato
CLAY MINERALS, 51, 4, 653, 674, Sep. 2016, [Peer-reviewed]
English, Scientific journal

Importance of temperature control in surrounding environment during permeability test for measuring hydraulic constants of rock
Masaji Kato; Yoshitaka Nara; Daisuke Fukuda; Masanori Kohno; Toshinori Sato; Tsutomu Sato; Manabu Takahashi
Zairyo/Journal of the Society of Materials Science, Japan, 65, 7, 489, 495, Society of Materials Science Japan, 01 Jul. 2016, [Peer-reviewed]
Japanese, Scientific journal

Structure of nanocrystalline calcium silicate hydrates: insights from X-ray diffraction, synchrotron X-ray absorption and nuclear magnetic resonance
Sylvain Grangeon; Francis Claret; Cedric Roosz; Tsutomu Sato; Stephane Gaboreau; Yannick Linard
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 49, 771, 783, Jun. 2016, [Peer-reviewed]
English, Scientific journal

Immobilization of selenium by Mg-bearing minerals and its implications for selenium removal from contaminated water and wastewater
Einstine M. Opiso; Tsutomu Sato; Tetsuro Yoneda
APPLIED CLAY SCIENCE, 123, 121, 128, Apr. 2016, [Peer-reviewed]
English, Scientific journal

Determination and reduction of Fe(III) incorporated into Mg-Fe layered double hydroxide structures
Kazuya Morimoto; Kenji Tamura; Hirohisa Yamada; Tsutomu Sato; Masaya Suzuki
APPLIED CLAY SCIENCE, 121, 71, 76, Mar. 2016, [Peer-reviewed]
English, Scientific journal

Sorption behaviour of arsenate by non-crystalline aluminosilicate minerals: implications for arsenic immobilisation during the disposal of alkaline coal fly ash materials
Einstine Opiso; Tsutomu Sato; Tetsuro Yoneda
INTERNATIONAL JOURNAL OF OIL GAS AND COAL TECHNOLOGY, 12, 2, 197, 209, 2016, [Peer-reviewed]
English, Scientific journal

Determination of Lead Contamination in Urban Soil, Yogyakarta City, Indonesia
Aye, S.A.Z; Hendrayana, H; Putra, D.P.E; Sato, T
Applied Mechanics and Materials, 842, 473, 477, 2016, [Peer-reviewed]
English, Scientific journal

Morphology control of clay-mineral particles as supports for metallocene catalysts in propylene polymerization
Tayano, T; Sagae, T; Atsumi, T; Uchino, H; Murata M; Sato, T
Polyolefins Journal, 3, 79, 92, 2016, [Peer-reviewed]
English, Scientific journal

岩石の透水試験における環境温度の制御の重要性
加藤昌治; 奈良禎太; 福田大祐; 河野勝宣; 佐藤稔紀; 佐藤努; 高橋学
材料, 65, 7, 282, 287, 2016, [Peer-reviewed]
Japanese, Scientific journal

Synthesis of Zn-Fe layered double hydroxides via an oxidation process and structural analysis of products
Kazuya Morimoto; Kenji Tamura; Sohtaro Anraku; Tsutomu Sato; Masaya Suzuki; Hirohisa Yamada
JOURNAL OF SOLID STATE CHEMISTRY, 228, 221, 225, Aug. 2015, [Peer-reviewed]
English, Scientific journal

Melt extraction and metasomatism recorded in basal peridotites above the metamorphic sole of the northern Fizh massif, Oman ophiolite
Masako Yoshikawa; Marie Python; Akihiro Tamura; Shoji Arai; Eiichi Takazawa; Tomoyuki Shibata; Akira Ueda; Tsutomu Sato
TECTONOPHYSICS, 650, 53, 64, May 2015, [Peer-reviewed]
English, Scientific journal

A passive collection system for whole size fractions in river suspended solids
Takeshi Matsunaga; Takahiro Nakanishi; Mariko Atarashi-Andoh; Erina Takeuchi; Katsunori Tsuduki; Syusaku Nishimura; Jun Koarashi; Shigeyoshi Otosaka; Tsutomu Sato; Seiya Nagao
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 303, 2, 1291, 1295, Feb. 2015, [Peer-reviewed]
English, Scientific journal

Fe isotope variations in ferruginous and manganeferous chemical sedimentary rocks associated with Kuroko deposits in the Hokuroku district, Northeast Japan
Otake Tsubasa; Suzuki Ryohei; Yamada Ryoichi; Shin Ki-Cheol; Kon Yoshiaki; Sato Tsutomu
Abstracts of Annual Meeting of the Geochemical Society of Japan, 62, 7, GEOCHEMICAL SOCIETY OF JAPAN, 2015
Japanese, 本研究の目的は，黒鉱鉱床の周辺部に産する鉄やマンガンに富む化学堆積岩を採集し，鉄安定同位体比を用いて，当時の北鹿海盆における酸化還元環境や海底熱水活動と大規模黒鉱鉱床の形成要因との関係性を明らかにすることである．分析の結果，黒鉱鉱床形成期および200-300万年後までの試料のδ⁵⁶Fe値は，-1.75‰から+2.02‰と大きく分別していた。このことから，当時北鹿海盆の一部が局所的に非酸化的になっていたと考えられる。また，黒鉱鉱床を伴う試料が-0.80から+2.02‰と⁵⁶Feに富んでおり，比較的分別の程度が小さい一方で，黒鉱鉱床を伴わない試料は-1.75から+0.69‰と⁵⁶Feに乏しく，より大きな分別を示した。これは黒鉱鉱床形成時には活発な熱水活動により熱水からの溶存鉄のインフラックスが大きかったこと，また，黄鉄鉱の沈殿により溶存鉄が⁵⁶Feに富むようになったことが原因と考えられる。

Environmental assessment on a contaminated stream in Malaysia using Fe, Pb stable isotopes and geochemical modeling
Ito Akane; Otake Tsubasa; Anraku Sohtaro; Shin Ki-Cheol; Shah Ariffin Kamar; Shin Ki-Cheol; Sato Tsutomu
Abstracts of Annual Meeting of the Geochemical Society of Japan, 62, 192, GEOCHEMICAL SOCIETY OF JAPAN, 2015
Japanese, 火成起源や漂砂型のレアアース鉱床の開発においては、鉱石鉱物であるモナザイトやゼノタイムなどが放射性元素であるThやUを含み、これらが生産過程、特に製錬過程において濃集するため、放射性物質の環境への漏洩が懸念されている。そのため、レアアース鉱床の開発には適切な環境影響評価が重要である。本研究では、かつて錫尾鉱から回収される重鉱物からレアアースが製錬され、また現在もチタン鉄鉱などのプロセシングが行われているマレーシア・イポー市周辺地域において環境への影響を評価するために、鉄・鉛安定同位体比やREEパターンなどの地球化学的指標を用いて汚染物質の起源を特定し、汚染河川中でのThやUの挙動について明らかにすることを目的とした。鉄・鉛同位体分析の結果およびREEパターンの変化より、汚染源は周辺の重鉱物プロセシングの影響であることが明らかとなった。また、地球化学モデリングの結果より、汚染河川中でThはpHの上昇に伴う沈殿形成、Uは鉄水酸化物への吸着によって河川水中から除去されている事が示唆された。

Monopersulfate oxidation of Acid Orange 7 with an iron(III)-tetrakis(N-methylpyridinium-4-yl)porphyrin intercalated into the layers of montmorillonite and pillared clay
Ryo Nishimoto; Qianqian Zhu; Takafumi Miyamoto; Tsutomu Sato; Xuefei Tu; Apichaya Aneksampant; Masami Fukushima
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 396, 84, 89, Jan. 2015, [Peer-reviewed]
English, Scientific journal

Using Fe–Mn binary oxide three-dimensional nanostructure to remove arsenic from aqueous systems
Lei, M; Qin, P; Peng, L; Ren, Y; Sato, T; Zeng, Q; Yang, Z; Chai, L
Water Science and Technology: Water Supply, 15, 2, 516, 524, 2015, [Peer-reviewed]
English, Scientific journal

Influence of phosphate sorption on dispersion of a Ferralsol
Dung Viet Pham; Munehide Ishiguro; Ha Thu Thi Tran; Tsutomu Sato
SOIL SCIENCE AND PLANT NUTRITION, 60, 3, 356, 366, Jun. 2014, [Peer-reviewed]
English, Scientific journal

Na-montmorillonite dissolution rate determined by varying the Gibbs free energy of reaction in a dispersed system and its application to a coagulated system in 0.3 M NaOH solution at 70 degrees C
Chie Oda; Colin Walker; Daisuke Chino; Satoru Ichige; Akira Honda; Tsutomu Sato; Tetsuro Yoneda
APPLIED CLAY SCIENCE, 93-94, 62, 71, May 2014, [Peer-reviewed]
English, Scientific journal

Spatial distributions of chromium enrichment in ~3.2 Ga Banded Iron Formations, Barberton Greenstone Belt, South Africa
ISHIKAWA KO; OTAKE TSUBASA; KAWAI SHOHJI; SATO TSUTOMU; KAKEGAWA TAKESHI
Abstracts of Annual Meeting of the Geochemical Society of Japan, 61, 127, 127, GEOCHEMICAL SOCIETY OF JAPAN, 2014
Japanese, 地球表層の酸化は酸素発生型光合成細菌の出現が原因であると考えられているが、その進化時期と初期地球表層環境の変遷については明らかになっていない。主に先カンブリア時代に産出する縞状鉄鉱層の微量元素や同位体組成は、形成当時の海洋溶存成分を反映していると考えられ、初期地球表層環境の推定に用いられてきた。本研究の目的は，南アフリカ・バーバトン地域において主に浅海性堆積岩から構成されるムーディーズ層群中の約32億年前に形成した縞状鉄鉱層中で発見されたクロム濃集の空間的広がりを明らかにすることである。そのため、バーバトンから南西に10kmほどに位置する、先行研究においてクロム濃集がみられたMoodise Hills (MH)および北東に10kmほどに位置するEureka synclineにあるGate of Paradise (GP)において調査を行った。

Transition in depositional environments after the formation of Kuroko deposits indicated from rare earth element patterns and iron isotopes
Otake Tsubasa; Suzuki Ryohei; Yamada Ryoichi; Shin Ki-Cheol; Kon Yoshiaki; Sato Tsutomu
Abstracts of Annual Meeting of the Geochemical Society of Japan, 61, 8, 8, GEOCHEMICAL SOCIETY OF JAPAN, 2014
Japanese, 本研究では，黒鉱鉱床のような大規模塊状硫化物鉱床の形成要因と当時の海洋環境の関係性をレアアースパターンと鉄安定同位体比を用いて調べた。黒鉱形成後に堆積した鉄に富む化学堆積岩には、レアアースパターンがCeの負異常を示し，また大きな鉄の同位体分別を示すものが存在することから，当時の海洋は酸化還元環境に関して成層化していたと考えられる。このことは，大規模塊状硫化物鉱床の形成において還元的な海洋環境が重要な要因の一つであることを示唆している。

B8 モンモリロナイトの粒子径と懸濁液の粘度(口頭発表,一般講演)
鈴木 啓三; 佐藤 努; 米田 哲朗
粘土科学討論会発表論文抄録, 58, 78, 79, 日本粘土学会, 2014
Japanese

B22 低温蛇紋岩化作用に伴う水素生成 : 付随合金鉱物の役割(招待講演,地質フィールドからみた粘土と鉱物,提案型セッション)
福原 直基; 佐藤 努; 大竹 翼
粘土科学討論会発表論文抄録, 58, 116, 117, 日本粘土学会, 2014
Japanese

Adsorption of pentachlorophenol to a humin-like substance-bentonite complex prepared by polycondensation reactions of humic precursors
Masami Fukushima; Ryo Okabe; Ryo Nishimoto; Shigeki Fukuchi; Tsutomu Sato; Motoki Terashima
APPLIED CLAY SCIENCE, 87, 136, 141, Jan. 2014, [Peer-reviewed]
English, Scientific journal

フィリピン国・ルソン島北西部に分布するザンバレスオフィオライトで生成されたアルカリ溶液との反応によって変質されたベントナイトの地球化学的・鉱物化学的特性
藤井直樹; 山川稔; 鹿園直建; 佐藤努
地質学雑誌, 120, 361, 375, 2014, [Peer-reviewed]
Japanese, Scientific journal

Mineral Synthesis in Si-Al-Ca Systems and Their Iodide Sorption Capacity under Alkaline Conditions
Xiaoji Liu; Atsushi Asai; Tsutomu Sato; Einstine Opiso; Tsubasa Otake; Tetsuro Yoneda
WATER AIR AND SOIL POLLUTION, 224, 3, 1442, 1455, Mar. 2013, [Peer-reviewed]
English, Scientific journal

Comparison of the vertical distributions of Fukushima nuclear accident radiocesium in soil before and after the first rainy season, with physicochemical and mineralogical interpretations
Takeshi Matsunaga; Jun Koarashi; Mariko Atarashi-Andoh; Seiya Nagao; Tsutomu Sato; Haruyasu Nagai
SCIENCE OF THE TOTAL ENVIRONMENT, 447, 301, 314, Mar. 2013, [Peer-reviewed]
English, Scientific journal

Effects of surface Fe(III) oxides in a steel slag on the formation of humic-like dark-colored polymers by the polycondensation of humic precursors
Ryo Nishimoto; Shigeki Fukuchi; Guangxia Qi; Masami Fukushima; Tsutomu Sato
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 418, 117, 123, Feb. 2013, [Peer-reviewed]
English, Scientific journal

B6 35℃および60℃における水酸化カリウム水溶液によるモンモリロナイトの変質(口頭発表,一般講演)
上田 麻衣; 中林 亮; 木嶋 達也; 佐藤 努; 米田 哲朗; 大竹 翼; 小田 治恵
粘土科学討論会発表論文抄録, 57, 90, 91, 日本粘土学会, 2013
Japanese

A14 モンモリロナイト粒子のアスペクト比とベントナイトの用途(口頭発表,一般講演)
鈴木 啓三; 佐藤 努; 米田 哲朗
粘土科学討論会発表論文抄録, 57, 58, 59, 日本粘土学会, 2013
Japanese

P7 沈殿相として層状複水酸化物を選択したニッケル含有廃水処理法のための基礎研究(ポスター発表,一般講演)
岡橋 東子; 西内 亨; 佐藤 努; 大竹 翼; 米田 哲朗
粘土科学討論会発表論文抄録, 57, 156, 157, 日本粘土学会, 2013
Japanese

A21 分級分析による飯舘村農地土壌のセシウム吸着特性および放射性セシウムの分布(口頭発表,一般講演)
伊藤 健一; 宮原 英隆; 氏家 亨; 武島 俊達; 横山 信吾; 中田 弘太郎; 鈴木 伸一; 鈴木 正哉; 佐藤 努; 八田 珠郎; 山田 裕久
粘土科学討論会発表論文抄録, 57, 0, 72, 73, 日本粘土学会, 2013
Japanese, Scientific journal

Application of Ferro Nickel Slag to Soil Improvement Agent : Relationship of Mixing Ratio of Scallop Shell and Cooling Rate with Dissolution Behavior of the Ferro Nickel Slag
SASAKI Shoji; SATO Tsutomu; KAWASAKI Koichi; TAKAYANAGI Kazuhiro
Shigen-to-Sozai, 129, 1, 29, 35, The Mining and Materials Processing Institute of Japan, 2013, [Peer-reviewed]
Japanese, Scientific journal, Si dissolution rate and mechanism of the ferro nickel slag with different mixing ratios of scallop shell and cooling rates have been investigated to apply ferro nickel slag as soil improvement agent. Slag with slow cooling rate was consisted of crystalline materials such as forsterite and enstatite. On the other hand, the slag with rapid cooling rate was amorphous material. Different constituent crystalline materials were obtained by addition of scallop shell. After addition of 30wt% the scallop shell, Ca-bearing crystalline materials such as monticellite, akermanite, wollastonite and augite were generated in the molten slag. The results obtained by batch dissolution experiment and SEM/EDX observation are summarized as follows.
(1) The amorphous slag has a faster Si dissolution rate than crystalline slag. However, Si dissolution rate of the crystalline slag become faster after addition of scallop shell. Si dissolution rate of the molten ferro nickel slag after addition of 30wt% scallop shell has the same with that of the amorphous slag with rapid cooling rate.
(2) Ca-bearing crystalline materials such as monticellite, akermanite, wollastonite and augite were easily dissolved than Mg-bearing materials such as forsterite and enstatite which were originally contained in the slag with slow cooling rate.
(3) Among the crystalline materials in the slag, dissolution of the part consisted mainly of monticellite were distinguished. It was followed by wollastonite, akermanite and augite. Marked dissolution did not observed in the part consisted mainly of forsterite and enstatite.
(4) Difference in dissolution behavior of the crystalline materials was due to the Ca content and degree of silica tetrahedron polymerization.
(5) Release of the nutrient elements such as Si and Mg can be promoted by the selection of rapid cooling rate and addition of scallop shell as Ca source in the production of slag.

On the nature of structural disorder in calcium silicate hydrates with a calcium/silicon ratio similar to tobermorite
Sylvain Grangeon; Francis Claret; Catherine Lerouge; Fabienne Warmont; Tsutomu Sato; Sohtaro Anraku; Chiya Numako; Yannick Linard; Bruno Lanson
Cement and Concrete Research, 52, 31, 37, 2013, [Peer-reviewed]
English, Scientific journal

Quantitative Analysis for Dissolution of Silica Minerals in the Compacted Bentonite at Hyperalkaline Conditions by X-ray Computed Tomography and Geochemical Modeling
NAKABAYASHI Ryo; KIJIMA Tatsuya; TSUKADA Yasumoto; SATO Tsutomu; OTAKE Tsubasa; KANEKO Katsuhiko; YONEDA Tetsuro
Journal of the Clay Science Society of Japan (in Japanese), 52, 1, 9, 22, The Clay Science Society of Japan, 2013, [Peer-reviewed]
Japanese, Scientific journal, Dissolution rates of montmorillonite in bentonite under hyperalkaline conditions have been obtained to evaluate the long-term performance of engineered barriers for radioactive waste disposal. The saturation state of pore water with respect to montmorillonite in bentonite has been demonstrated as an important factor controlling montmorillonite dissolution rate. Pore water chemistry including the saturation state may be significantly affected by the dissolution of accessory minerals in bentonite. The bentonite "Kunigel V1", which is being considered for use in radioactive disposal barriers in Japan, actually contains a large amount (〜50 %) of accessory silica minerals, such as chalcedony and quartz. Dissolution of the silica minerals may inhibit the dissolution of montmorillonite in the bentonite by increasing the silica concentration and hence the saturation state with respect to montmorillonite in the pore water. Therefore, the objectives of this study are to examine the dissolution kinetics of the silica minerals and the effect of dissolved silica on the dissolution of montmorillonite in a compacted bentonite using X-ray computed tomography (CT) and geochemical modeling. Advective alteration experiments of a compacted bentonite (Kunigel V1) with a dry density of 0.3 Mg/m^3 was conducted with 0.3M NaOH solution at 70℃ for 360 days. X-ray CT images, which were taken every 10 days, showed that the volume of a light colored material decreased as the interaction between the bentonite and hyperalkaline-fluid progressed during the experiments. This is attributed to the dissolution of accessory silica minerals in the bentonite. XRD analyses of altered bentonite after the experiments identified that the accessory mineral was mainly chalcedony. The kinetic data for dissolution of chalcedony was obtained by developing the methodology to quantify the volume of accessory minerals in the CT images. These results showed that chalcedony was almost completely dissolved in the area close to the fluid input within 80 days. The geochemical transport model consistent with the experimental results indicates that the pore water in the bentonite became near saturation with respect to montmorillonite due to the dissolution of silica minerals in bentonite, inhibiting the dissolution of montmorillonite in bentonite. The model also indicates that the inhibition of montmorillonite dissolution will not be sustained beyond the experimental duration under the same experimental conditions. However, a compacted bentonite with higher dry density such as 1.6 Mg/m^3, where diffusion is the dominant mass transport mechanism, has been considered for use in actual radioactive disposal barriers in Japan. In the much more compacted bentonite system, dissolution of montmorillonite will be inhibited for a much longer term. Therefore, it is important to consider the dissolution behavior of silica minerals to sufficiently evaluate the long-term performance of bentonite as a component of engineered barriers for radioactive waste disposal.

鉄との相互作用による緩衝材への変質影響評価：影響要因に関する解析的検討
中林亮; 木嶋達也; 塚田康元; 佐藤努; 大竹 翼; 金子勝比古; 米田哲朗
原子力バックエンド研究, 20, 39, 52, 2013, [Peer-reviewed]
Japanese, Scientific journal

セラミックスによる放射性廃棄物の処理方法 福島第一原発事故で発生した放射性廃棄物の処理・処分に内在する課題
佐藤努
セラミックス, 47, 11, 859-863, 875, 日本セラミックス協会, 01 Nov. 2012
Japanese

Surface complexation reactions of inorganic anions on hydrotalcite-like compounds
Kazuya Morimoto; Sohtaro Anraku; Jun Hoshino; Tetsuro Yoneda; Tsutomu Sato
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 384, 1, 99, 104, Oct. 2012, [Peer-reviewed]
English, Scientific journal

Fe-loaded zeolites as catalysts in the formation of humic substance-like dark-coloured polymers in polycondensation reactions of humic precursors
S. Fukuchi; M. Fukushima; R. Nishimoto; G. Qi; T. Sato
CLAY MINERALS, 47, 3, 355, 364, Sep. 2012, [Peer-reviewed]
English, Scientific journal

Factors affecting vertical distribution of Fukushima accident-derived radiocesium in soil under different land-use conditions
Jun Koarashi; Mariko Atarashi-Andoh; Takeshi Matsunaga; Tsutomu Sato; Seiya Nagao; Haruyasu Nagai
SCIENCE OF THE TOTAL ENVIRONMENT, 431, 392, 401, Aug. 2012, [Peer-reviewed]
English, Scientific journal

Sorption Behavior of Arsenate by Mg-Bearing Minerals at Hyperalkaline Condition: Implications for Oxyanions Sequestration During the Use and Disposal of Alkaline Wastes
Einstine Opiso; Atsushi Asai; Tsutomu Sato; Tetsuro Yoneda; Xiaoji Liu
WATER AIR AND SOIL POLLUTION, 223, 6, 3471, 3483, Jul. 2012, [Peer-reviewed]
English, Scientific journal

Factors Affecting to the Viscosity of Montmorillonite/water Suspension 2. Relationship between Aspect Ratio of Montmorillonite Particles and Viscosity of Aqueous Suspensions
SUZUKI KEIZO; SATO TSUTOMU; YONEDA TETSURO
粘土科学, 50, 3, 162-174, 174, The Clay Science Society of Japan, 30 Mar. 2012
Japanese, The viscosity of aqueous montmorillonite suspensions is affected by many factors, most notable among them include the soluble salt content and composition of exchangeable cations. However, difference in the viscosity of these suspensions remained even at almost identical soluble salt and exchangeable cation compositions. Because of these, the authors made this research based on the following hypothesis: the determining factor for the viscosity of aqueous montmorillonite suspensions is the aspect ratios of montmorillonite particles. Eight montmorillonite samples from Yamagata-Japan, Wyoming-USA and Gujart-India, having wide range of viscosity and aspect ratio, were used. In the experiments, the de-carbonated and Na-exchanged samples in addition to the untreated samples, both purified from bentonite suspension, were utilized. Surface area of basal planes and heights of 100 montmorillonite particles randomly-selected from the untreated samples were measured using AFM. The surface area of the basal planes was converted to the diameter of an equivalent circle. The aspect ratio was then calculated by dividing the diameter of the obtained equivalent circle with the height of the particle. The calculated values of the aspect ratio were at 260-380, 190-210 and 129 for the montmorillonites sampled from Yamagata, Wyoming and Gujarat, respectively. The aspect ratios of some Na-exchanged montmorillonite samples were also determined from the viscosity of diluted suspensions. The values of the aspect ratio obtained using this different method showed good agreement with the results by AFM measurement. This means that montmorillonite particles are suspended in water without folding or bending. For Na-exchanged samples, aspect ratio of montmorillonite particles and viscosity of aqueous suspensions showed good correlation (R^2=0.96). Using Simha's and Einstein's equations, the reason why the aspect ratio is the determining factor for the viscosity of aqueous montmorillonite suspensions could be explained as follows: in the aqueous suspensions, montmorillonie particles are rotating with Brownian movement of water molecules and occupying an apparent volume of sphere having diameter equivalent to the aspect ratio (nm). Apparent volume fraction of montmorillonite, which is calculated by multiplying the apparent volume of the montmorillonite particle and the number of particles in a 1ml suspension, is controlled by the aspect ratio. Because the aspect ratio affects numerically on the order of cube power to the apparent volume fraction of montmorillonite, while the number of particles in suspension affects only on the order of single power, in consideration of Einstein's equation. Montmorillonite that have large aspect ratios even with less number of particles will occupy a large apparent volume fraction in suspension and will have high viscosity. In contrast, montmorillonite with a smaller aspect ratio and large number of particles will occupy a smaller apparent volume fraction and the suspension will have low viscosity. Thus, the determining factor for the viscosity of aqueous montmorillonite suspensions is the aspect ratio of montmorillonite particles. Because this study was made using 8 montmorillonite samples having wide range of aspect ratio and viscosity, we believe that the conclusion obtained is universal.

Practical approach to decontamination of radioactive cesium-contaminated matter in agricultural region by improved wet classification and use of geomaterials
Kenichi Ito; Hidetaka Miyahara; Toru Ujiie; Toshikatsu Takeshima; Shingo Yokoyama; Kotaro Nakata; Tetsushi Nagano; Tsutomu Sato; Tamao Hatta; Hirohisa Yamada
Transactions of the Atomic Energy Society of Japan, 11, 4, 255, 271, 2012
Japanese, Scientific journal

Arsenic pollution in groundwater at Kandal province, Cambodia
B. Pich; T. Yoneda; T. Sato
Proc. of the 4th Regional Conference on Geological Engineering, 46, 52, 2012, [Peer-reviewed]
English, International conference proceedings

Sorption of pentachlorophenol to organo-clay complexes prepared by polycondensation reactions of humic precursors.
Masami Fukushima; Ryo Okabe; Ryo Nishimoto; Shigeki Fukuchi; Tsutomu Sato; Motoki Terashima
In: “Functions of Natural Organic Matter in Changing Environment” Proceeding Papers of The 16th Meeting of the International Humic Substances Society, 299, 301, 2012, [Peer-reviewed]
English, International conference proceedings

熱水指標としての層状ケイ酸塩鉱物の資源探査への応用について
米田哲朗; 木工裕史; 松本 晃; 高橋亮平; 佐藤 努
平成24年度資源・素材学会春季大会講演集（企画発表）, 361, 362, 2012
Japanese, Scientific journal

Adsorption and co-precipitation behavior of fluoride onto Mg-bearing minerals in Si-Al-Mg mineral system at hyperalkaline conditions
Liu, X; Sato, T; Opiso, E; Yoneda, T
Clay Science, 16, 49, 57, 2012, [Peer-reviewed]
English, Scientific journal

Reactive-transport model analyses of bentonite alteration behavior at alkaline condition generated by cement-water interaction in a TRU wastes repository
ODA Chie; HONDA Akira; TAKASE Hiroyasu; OZONE Kenji; SASAKI Ryoichi; YAMAGUCHI Kohei; SATO Tsutomu
Journal of the Clay Science Society of Japan (in Japanese), 51, 2, 34, 49, The Clay Science Society of Japan, 2012, [Peer-reviewed]
Japanese, Scientific journal, The maximum dose of ionizing radiation from the geological disposal of TRU wastes will likely be controlled by poorly sorbing soluble radionuclides, such as I-129. Proposed repository designs for the geological disposal of TRU wastes envisage the use of an engineered barrier composed of a bentonite buffer to limit the migration of such radionuclides by impeding groundwater flow. Cementitious materials will inevitably be used for waste packaging, in filling and adding structural integrity to the repository. Using cementitious materials, however, is problematic because they produce highly alkaline leachates which have the potential to cause a complex series of coupled changes in the porewater chemistry, mineralogy and, ultimately, the mass transport properties of the bentonite buffer. To elucidate the consequences of these coupled changes, reactive-transport model analyses have been conducted for bentonite alteration test cases with the use of different combinations of secondary minerals that will likely form in the bentonite buffer. A dissolution rate equation of smectite (a key component of bentonite) applicable to pH 7-13 and 25-80 ℃ was proposed and used in the reactive-transport model analyses. It was found that the amount of dissolved smectite at the center of the bentonite buffer was smaller and those in the vicinity of the cement interface was larger when thermodynamically metastable secondary minerals mainly precipitated as compared with the precipitation of stable phases. The calculated temporal and spatial changes of kinetic smectite dissolution were interpreted as a consequence of the changes in Gibbs free energy and porewater chemistry. Furthermore, the bentonite porewater chemistry was also affected by the stoichiometry and thermodynamic stability of the secondary minerals and the kinetics of smectite dissolution. Except in the close proximity of the cement interface, it was found that regardless of the choice of secondary minerals, the effective diffusion coefficient and hydraulic conductivity remained largely unchanged after 100,000 years.

スラグとホタテ貝殻からの土壌改良材製造技術の開発
佐々木正司; 川崎康一; 佐藤努
青森県産業技術センター工業部門事業報告書, 2010, 66, 28 Dec. 2011
Japanese

Background and Problematics of Radioactive Contamination by the Accident at Fukushima Dai-ichi Nuclear Power Plant
SATO Tsutomu
Nendo Kagaku, 50, 2, 26, 32, 日本粘土学会, 25 Dec. 2011
Japanese, The Fukushima Dai-ichi nuclear disaster is a series of equipment failures, nuclear fuel meltdowns, and releases of the fission products and feasible neutron activated nuclides to the environment at the Fukushima Nuclear Power Plant, following the 9.0 magnitude east-Japan earthquake and the ensuing tsunami on 11 March 2011. As the result of radionuclide releases, the soils, drinking water, foods, water in swimming pool, building wall, road and forest in Fukushima were widely contaminated with the radionuclides, especially ^<137>Cs. Although it is urgent to figure out how radioactive material...

Effect of different fractions of weathered pumice in the formation of humic-like substances
A. Miura; S. Fukuchi; R. Okabe; M. Fukushima; M. Sasaki; T. Sato
CLAY MINERALS, 46, 4, 637, 648, Dec. 2011, [Peer-reviewed]
English, Scientific journal

Dissolution kinetics of synthetic Na-smectite. An integrated experimental approach
Nicolas C. M. Marty; Jordi Cama; Tsutomu Sato; Daisuke Chino; Frederic Villieras; Angelina Razafitianamaharavo; Jocelyne Brendle; Eric Giffaut; Josep M. Soler; Eric C. Gaucher; Christophe Tournassat
GEOCHIMICA ET COSMOCHIMICA ACTA, 75, 20, 5849, 5864, Oct. 2011
English, Scientific journal

Characterization of an adsorbed humin-like substance on an allophanic soil formed via catalytic polycondensation between catechol and glycine, and its adsorption capability to pentachlorophenol
Ryo Okabe; Akitaka Miura; Masami Fukushima; Motoki Terashima; Masahide Sasaki; Shigeki Fukuchi; Tsutomu Sato
CHEMOSPHERE, 83, 11, 1502, 1506, Jun. 2011
English, Scientific journal

TEN-YEAR INTERACTION OF CARBON STEEL COUPON AND COMPACTED BENTONITES
UENO KENICHI; SUYAMA TADAHIRO; ISHIDERA TAKAMITSU; SATO TSUTOMU
Clay science, 15, 2, 89, 102, 日本粘土学会, Jun. 2011
English, In the Japanese high-level waste (HLW) repository design, compacted bentonite and carbon steel overpack are the main components of the engineering barrier system. The possibility that the chemical and physical properties of the compacted bentonite might change after interaction with corrosion products of the carbon steel has been noted. Experimental validation of the interaction of smectite in compacted bentonite as simulated in the HLW repository system is still very limited. This study focuses on smectite and corrosion product interaction and Fe migration behavior in compacted bentonite s...

Evaluation of the Affinity of Some Toxic Elements to Schwertmannite in Natural Streams Contaminated with Acid Mine Drainage
Tetsushi Nagano; Nobuyuki Yanase; Yukiko Hanzawa; Morio Takada; Hisayoshi Mitamura; Tsutomu Sato; Hirochika Naganawa
WATER AIR AND SOIL POLLUTION, 216, 1-4, 153, 166, Mar. 2011
English, Scientific journal

ARSENIC REMOVAL FROM SYNTHETIC GROUNDWATER BY CAMBODIAN LATERITE
PICH BUNCHOEUN; YONEDA TETSURO; SATO TSUTOMU
Clay science, 15, 1, 53, 59, 日本粘土学会, Mar. 2011
English, The high arsenic content in groundwaters of Kandal province, Cambodia has threatened about 1 million people with tens of them being at risk to arsenicosis. In this context, this study aims to investigate the removal of arsenic from Kandal groundwater by utilizing naturally available laterite from Kampong Cham province in order to obtain safe drinking waters for the people. The laterite samples were characterized with XRD, XRF, zeta potential analyzer, and surface area analyzer. Batch adsorption experiment of As(V) onto laterite was conducted under ambient temperature as a function of adsorb...

A22 カルシウム炭酸塩鉱物によるヨウ素の取り込みとその長期安定性(口頭発表,一般講演)
安楽 総太郎; 星野 純; 松原 勇武; 福士 圭介; 佐藤 努; 米田 哲朗
粘土科学討論会発表論文抄録, 55, 74, 75, 日本粘土学会, 2011
Japanese

A9 モンモリロナイト粒子の構造(口頭発表,一般講演)
鈴木 啓三; 佐藤 努; 米田 哲朗
粘土科学討論会発表論文抄録, 55, 48, 49, 日本粘土学会, 2011
Japanese

A8 X線CT法による高アルカリ間隙水-ベントナイト相互作用の評価 : 圧縮ベントナイト中のモンモリロナイトの溶解速度の検討(口頭発表,一般講演)
中林 亮; Elakneswaran Yogaraiah; 千野 大輔; 佐藤 努; 米田 哲朗; 小田 治恵; 金子 勝比古
粘土科学討論会発表論文抄録, 55, 46, 47, 日本粘土学会, 2011
Japanese

Arsenic Mineralogy of some hydrothermal ore deposits in abandoned mine area of southwestern Hokkaido, Japan
T. Yoneda; T. Bando; T. Sato
Proc. of the 5th Int. Workshop and Conference on Earth Resources Technology, 14, 16, 2011, [Peer-reviewed]
English, International conference proceedings

P21 シュベルトマナイトの陽イオン及び陰イオン固定による効率的な酸性廃水処理の検討(ポスター発表,一般講演)
西内 亨; 岡本 浩紀; 伊藤 健一; 佐藤 努; 米田 哲朗
粘土科学討論会発表論文抄録, 55, 0, 194, 195, 日本粘土学会, 2011
Japanese, Scientific journal

Interaction between compacted bentonite and hardened cement
Masahito Shibata; Hiroyuki Sakamoto; Tsutomu Sato
Transactions of the Atomic Energy Society of Japan, 10, 2, 91, 104, Atomic Energy Society of Japan, 2011
Japanese, Scientific journal

Ion-cement hydrate interactions govern multi-ionic transport model for cementitious materials
Y. Elakneswaran; A. Iwasa; T. Nawa; T. Sato; K. Kurumisawa
CEMENT AND CONCRETE RESEARCH, 40, 12, 1756, 1765, Dec. 2010
English, Scientific journal

Elucidation of polycyclic aromatic hydrocarbon sources in the sinking particles in Lake Biwa, Japan
Nobuyasu Itoh; Shuji Tamamura; Tsutomu Sato; Michio Kumagai
LIMNOLOGY, 11, 3, 241, 250, Dec. 2010
English, Scientific journal

Spectroscopic investigations of humic-like acids formed via polycondensation reactions between glycine, catechol and glucose in the presence of natural zeolites
Shigeki Fukuchi; Akitaka Miura; Ryo Okabe; Masami Fukushima; Masahide Sasaki; Tsutomu Sato
JOURNAL OF MOLECULAR STRUCTURE, 982, 1-3, 181, 186, Oct. 2010
English, Scientific journal

Decomposition of Polycyclic Aromatic Hydrocarbon (PAHs) on Mineral Surface under Controlled Relative Humidity
Shuji TAMAMURA; Tsutomu SATO; Yukie OTA; Ning TANG; Kazuichi HAYAKAWA
Acta Geologica Sinica - English Edition, 80, 2, 185, 191, Wiley, 07 Sep. 2010
Scientific journal

A NOVEL REMEDIATION METHOD LEARNT FROM NATURAL ATTENUATION PROCESS FOR Cu- AND Zn-BEARING WASTEWATER
OKAMOTO Hiroki; MORIMOTO Kazuya; ANRAKU Sohtaro; SATO Tsutomu; YONEDA Tetsuro
Clay Sci, 14, 5, 203-210, 210, The Clay Science Society of Japan, Sep. 2010
English, To develop a novel remediation for Cu- and Zn-bearing wastewater, the natural attenuation process in Dougamaru abandoned mine at Shimane Prefecture, Japan was investigated. In the Dougamaru abandoned mine, Cu- and Zn-bearing mine drainage was naturally attenuated by formation of green precipitate composed of Cu-bearing layered double hydroxide (LDH), hydrowoodwardite (HW) with chemical formula such as Cu_<0.66>Zn_<0.09>Fe_<0.01>Al_<0.23>(OH)_2(SO_4)_<0.15>・mH_2O. This attenuation was achieved at pH 6.0 with aeration and bacterial respiration and without any neutralization process attributed to the mixing with spring or surface water. The formation of the HW at pH 6 is also confirmed by thermodynamic consideration in this study. The formation process of the HW at the Dougamaru abandoned mine teaches us a novel technology for remediation system with addition of Al ion to wastewater and without employing any extensive chemical treatment processes. From the experiment to check applicability of Cu- and Zn-bearing LDHs to wastewater treatment, HW (Cu-bearing LDH) and zincowoodwardite (ZW; Zn-bearing LDH) were obtained by addition of Al ion to the Cu- and Zn-bearing wastewater from lower pH condition. The improvement of removal efficiency by adding Al ion in Cu-bearing wastewater system was not so clear in the experiment because Cu ion is removed from the synthetic wastewater due to Cu-hydroxyl sulfate precipitation at the experimental condition. On the other hand, the removal efficiencies of Zn ion showed the range from 0 to 30% even at pH 6.0 and improved with increasing initial Al ion content. The experimental results in Zn-bearing wastewater system indicate that the safety remediation of Zn ion can be achieved even at lower pH than 6.0-7.0 by selection of the ZW as a candidate of the solubility-limiting solid phase. Moreover, because of high anion exchange capacity of LDH, the method with addition of Al ion source for the wastewater treatment may also be useful for the treatment of wastewater containing Cu and Zn ions and simultaneously with As, Se, and Sb anions, which shows good performance in terms of anion remediation.

Incorporation of arsenic during the formation of Mg-bearing minerals at alkaline condition
E. M. Opiso; T. Sato; K. Morimoto; A. Asai; S. Anraku; C. Numako; T. Yoneda
MINERALS ENGINEERING, 23, 3, 230, 237, Feb. 2010
English, Scientific journal

Some Reference Data for the JCSS Clay Specimens
MIYAWAKI Ritsuro; SANO Takashi; OHASHI Fumihiko; SUZUKI Masaya; KOGURE Toshihiro; OKUMURA Taiga; KAMEDA Jun; UMEZOME Takuya; SATO Tsutomu; CHINO Daisuke; HIROYAMA Kaori; YAMADA Hirohisa; TAMURA Kenji; MORIMOTO Kazuya; UEHARA Seiichiro; HATTA Tamao
Nendo Kagaku, 48, 4, 158, 198, 日本粘土学会, 18 Jan. 2010
Japanese

Natural analogue studies of bentonite reaction under hyperalkaline conditions: Overview of ongoing work at the Zambales Ophiolite, Philippines
N. Fujii; C. A. Arcilla; M. Yamakawa; C. Pascua; K. Namiki; T. Sato; N. Shikazono; W. R. Alexander
Proceedings of the International Conference on Radioactive Waste Management and Environmental Remediation, ICEM, 2, 41, 50, 2010, [Peer-reviewed]
English, International conference proceedings

FORMATION OF SECONDARY MINERALS AND UPTAKE OF VARIOUS ANIONS UNDER NATURALLY-OCCURRING HYPERALKALINE CONDITIONS IN OMAN
Sohtaro Anraku; Kazuya Morimoto; Tsutomu Sato; Tetsuro Yoneda
PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON ENVIRONMENTAL REMEDIATION AND RADIOACTIVE WASTE MANAGEMENT 2009, VOL 2, 849, 854, 2010, [Peer-reviewed]
English, International conference proceedings

鉱床探査における熱水指標としての層状ケイ酸塩鉱物の重要性，緑泥石－スメクタイト系鉱物の化学組成と構造特性の適用性
米田哲朗; 木工裕史; 佐藤努
資源・素材2010（福岡）,企画発表講演資料A, 205, 208, 2010
Japanese, Research society

西南北海道の二つのタイプの浅熱水性金鉱床における砒素の鉱物学と溶出特性の比較
坂東知哉; 米田哲朗; 畑山恵; 佐藤努; 伊藤俊彦
資源・素材2010（福岡）,企画発表講演資料A, 209, 212, 2010
Japanese, Research society

Natural iodine in a clay formation: Implications for iodine fate in geological disposals
F. Claret; C. Lerouge; T. Laurioux; M. Bizi; T. Conte; J. P. Ghestem; G. Wille; T. Sato; E. C. Gaucher; E. Giffaut; C. Tournassat
GEOCHIMICA ET COSMOCHIMICA ACTA, 74, 1, 16, 29, Jan. 2010
English, Scientific journal

Adsorption and co-precipitation behavior of arsenate, chromate, selenate and boric acid with synthetic allophane-like materials
Einstine Opiso; Tsutomu Sato; Tetsuro Yoneda
JOURNAL OF HAZARDOUS MATERIALS, 170, 1, 79, 86, Oct. 2009, [Peer-reviewed]
English, Scientific journal

Microstructure of saturated bentonites characterized by X-ray CT observations
Chie Kawaragi; Tetsuro Yoneda; Tsutomu Sato; Katsuhiko Kaneko
ENGINEERING GEOLOGY, 106, 1-2, 51, 57, May 2009
English, Scientific journal

Complexation Reactions of Oxyanions on Brucite Surfaces
MORIMOTO Kazuya; SATO Tsutomu; YONEDA Tetsuro
Nendo Kagaku, 48, 1, 9, 17, The Clay Science Society of Japan, 10 Apr. 2009
Japanese, Complexation reactions of environmentally important oxyanions such as nitrate (NO_3), sulfate (SO_4), phosphate (PO_4), and arsenate (AsO_4) on brucite (Mg(OH)_2) surfaces were investigated to understand the role of brucite in immobilization of hazardous oxyanions at hyperalkaline environment. The impacts by surface complexation reactions on solid state properties of brucite were also evaluated. Synthetic brucite was used for the adsorption and post-adsorption experiments as a starting material. In the adsorption experiments, the synthesized brucite was reacted with various oxyanion solutio...

Seasonal Deposition Fluxes of Polycyclic Aromatic Hydrocarbons (PAHs) in Lake Biwa, Japan
Shuji Tamamura; Tsutomu Sato; Yukie Ota; Yasuaki Aota; Kenji Kashiwaya; Michio Kumagai
WATER AIR AND SOIL POLLUTION, 198, 1-4, 297, 306, Mar. 2009
English, Scientific journal

Generation of high-alkaline springs and occurrence of secondary minerals in Oman Ophiolite
Morimoto Kazuya; Anraku Sohtaro; Sato Tsutomu; Yoneda Tetsuro
Abstracts of Annual Meeting of the Geochemical Society of Japan, 56, 103, 103, GEOCHEMICAL SOCIETY OF JAPAN, 2009
オマーンオフィオライトにおいて、モホ遷移帯付近よりpH11を超える高アルカリ泉の湧出が認められている。本研究では、高アルカリ泉の組成と湧出口付近で地表水との混和により生成している白色の沈殿物の組成を明らかにし、それらの生成過程について考察した。白色の沈殿物は全てアラゴナイトやカルサイトといった炭酸カルシウムを多く含んでいた。このほかMg含有鉱物であるブルーサイトやハイドロタルサイトを特徴的に含む試料があった。ハイドロタルサイトの生成には、高アルカリ泉中のAl濃度が大きく寄与していた。またIR・SEM-EDX分析より、ハイドロタルサイトが陰イオンとしてケイ酸イオンを含有していることが示唆された。高アルカリ泉の進化過程において、ケイ酸イオンを含有するハイドロタルサイトの生成がSiおよびMgのシンクとして重要な役割を果たしていることが推察された。

Effect of calcium silicate hydrate precipitates at cementitious and bentonite material interface on long-term engineered barrier system performance in TRU waste disposal facilities
Susumu Kurosawa; Hiroyuki Sakamoto; Kiyofumi Nitta; Chiya Numako; Kazuko Haga; Masahito Shibata; Tsutomu Sato; Toshiyuki Nakazawa; Hitoshi Owada
Materials Research Society Symposium Proceedings, 1193, 489, 496, 2009
International conference proceedings

Arsenic Immobilization by Mg-bearing Minerals at Alkaline pH Condition: Lessons Learnt from Natural Processes
E.M. Opiso; T. Sato; K. Morimoto; S. Anraku; C. Numako; T. Yoneda
Proc. of the 3rd International Workshop and Conference on Earth Resources and Technology, CD-ROM, 2009, [Peer-reviewed]
English, International conference proceedings

Arsenate incorporation onto allophone
E.M. Opiso; T. Sato; T. Yoneda
Proc. of the 1st Regional Conference on Geo-Disaster Mitigation and Waste Management in ASEAN, 78, 84, 2009, [Peer-reviewed]
English, International conference proceedings

XRDリートベルト法による鉱物定量分析の探査への適用について
米田哲朗; 坂東知哉; 佐藤 努
資源・素材札幌2009 講演資料集 (A6), 187, 190, 2009
Japanese, Research society

Adsorption of Oxyanions and Post-Adsorption Behavior of Schwertmannite
TAKADA Morio; FUKUSHI Keisuke; SATO Tsutomu; YONEDA Tetsuro
Nendo Kagaku, 47, 4, 255, 260, The Clay Science Society of Japan, 28 Dec. 2008
Japanese, Adsorption and post-adsorption characteristics of different oxyanions such as P, Cr, As and Se onto schwertmannite were investigated in order to understand the role of schwertmannite in acid mine drainage, and its performance and safety assessment in remediation system. Synthetic schwertmannite was used for the adsorption and post-adsorption experiments as a starting material. In the adsorption experiments, the starting material was reacted with various oxyanion solutions such as Na_2HPO_4, Na_2CrO_4・4H_2O, Na_2HAsO_4・7H_2O and Na_2SeO_4 with concentration up to 2.0mM at around pH 3.9. Domi...

A Novel Remediation Method for Arsenic Bearing Acid Mine Drainage Learnt from Natural Attenuation Process
ITO Kenichi; FUKUSHI Keisuke; HASHIMOTO Koichi; TANAKA Chima; IKEDA Hodaka; SATO Tsutomu; YONEDA Tetsuro
Journal of MMIJ, 124, 8, 519, 528, 社団法人 資源・素材学会, 25 Aug. 2008
Japanese, The acid mine drainages (AMD) are treated by neutralization with the two problems: (1) an enormous expenditure; and (2) a discharge of neutralization sludge. In this context, as a case study, a novel remediation method was applied for AMD at Horobetsu mine. The schwertmannite is generated by iron-oxidizing bacteria with Fe<SUP>2+</SUP> and SO<SUB>4</SUB><SUP>2-</SUP> in acidic mine waters. Its efficiency in As uptake through sorption has been documented in the natural attenuation in Nishinomaki. This study demonstrates the advantages and feasibility of utilizing schwertmannite as a novel re...

Environmental geochemistry of inorganic anions
Sato Tsutomu; Fukushi Keisuke; Yoneda Tetsuro
Abstracts of Annual Meeting of the Geochemical Society of Japan, 55, 339, 339, GEOCHEMICAL SOCIETY OF JAPAN, 2008
近年、世界各地で問題となっている有害無機陰イオンによる地下水・土壌汚染は、多岐にわたる分野で解決が望まれている緊急課題である。有害無機陰イオンに限らず、土壌や地層などの天然における化学物質の挙動を解析する場合には、その移動媒体である天然水に溶出した物質がどのように存在し、どのようにして構成物質表面に濃縮され蓄積されるか（収着されるか）について記述し予測することが必要となる。そこで発表では、その記述や予測に不可欠となる代表的な無機陰イオン種のスペシエーションや代表的な鉱物への吸着・収着挙動についてまとめるとともに、それらを踏まえたうえで、天然における有害無機陰イオンのマネージメントの方策について議論する。

Uptake of inorganic anions by minerals formed at subsurface of the Earth
Sato Tsutomu; Asai Atsushi; Anraku Sotaro; Morimoto Kazuya; Opiso Einstine; Numako Chiya; Yoneda Tetsuro
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2008, 159, 159, Japan Association of Mineralogical Sciences, 2008
Japanese, The contamination of groundwater with dissolved cationic chemical species such as Ni, Cu, Zn, Cd, Hg, and Pb has been an important concern in the past. Dissolved anionic species such as As has received a more important focus due to its prevalence in West Bengal as a toxic contaminant affecting several hundreds of thousands of people. Nitrates and phosphates from excessive use of fertilizers in agriculture and detergents in households are grim reminders of dissolved anion contamination in rural groundwater supplies. Chemical weathering of slag and fly ash recycled as cement materials can release anionic chemical species that has alarmed the industrial community. Long-lived dissolved anionic nuclides such as 14C, 36Cl, 79Se, 99Tc and 129I from radioactive wastes of the nuclear power industry are also a cause for grave concern. The behavior of dissolved anionic chemical species in the natural environment has proved to be the most important factor in determining their hazards and their accumulation in minerals that comprises rocks and soils. In this context, this paper presents a review of the chemical speciation of hazardous inorganic anions in groundwater. It is one of main objectives of the manuscript to depict and understand anion mobility at different pH and redox conditions in the natural geochemical environment. A substantial part focuses on adsorptive behavior of the anions onto goethite as the representative adsorbent in the natural environment. Finally, the management strategies involved in controlling hazardous inorganic anions in the natural environments, i.e., natural remediation strategies of anions, are comprehensively reviewed and discussed. The final part is reinforced by several examples of natural attenuation processes in governing the anion mobility.

Comparison of amino acid polymerization catalysis on different mineral surfaces
Hiroyama Kaori; Ota Yukie; Sato Tsutomu; Yoneda Tetsuro
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2008, 170, 170, Japan Association of Mineralogical Sciences, 2008
Japanese, There is no research focused the characteristic for solid acid of minerals mineral surfaces is changed by relative humidity control. When the activation of catalysis on mineral surfaces is considered, water must be controlled and relative humidity can play this role. This may be a key to find out mechanism of peptide formation on mineral surfaces. It showed that the mineral catalysis for amino acid polymerization changed controlling relative humidity and Hectorite was the most effective catalyst. The factor that the catalytic efficiencies differ from each clay minerals may be the composition rather than the structure of clay minerals. As Hectorite is Mg- O in the structure, I conducted relative humidity experiment with Periclase. Mg-O may be the catalytic site to amino acid polymerization.

Measurement of crystallite thickness for clay minerals in the Toyoha geothermal and mining area, Hokkaido
Mokko Hiroshi; Yoneda Tetsuro; Sato Tsutomu
Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2008, 82, 82, Japan Association of Mineralogical Sciences, 2008
Japanese, The properties of hydrothermal clay minerals such as crystallite thickness and its distribution can be related to their formational environments in the hydrothermal systems. In this study chlorite and mica mineral from two 1000m vertical drill holes and hydrothermal ore veins in Toyoha geothermal and mining area were analyzed to calculate crystallite thickness by using the MudMaster computer program(Drits et al., 1996). The averaged particle sizes of chlorite are ranging from 20 to 30nm in thickness. In the lower part of one drill hole, they gradually increase correlating with depth.

An application of XRD Rietveld method to the mineral phase quantification of geological materials
T. Yoneda; K. Sasaki; T. Sato
Proceedings of the 2nd Int. Workshop and Conference on Earth Resources Technology, 2008, [Peer-reviewed]
English, International conference proceedings

A Novel Remediation Method for Arsenic Bearing Acid Mine Drainage Learnt from Natural Attenuation Process
ITO Kenichi; FUKUSHI Keisuke; HASHIMOTO Koichi; TANAKA Chima; IKEDA Hodaka; SATO Tsutomu; YONEDA Tetsuro
Shigen-to-Sozai, 124, 8, 519, 528, The Mining and Materials Processing Institute of Japan, 2008
Japanese, The acid mine drainages (AMD) are treated by neutralization with the two problems: (1) an enormous expenditure; and (2) a discharge of neutralization sludge. In this context, as a case study, a novel remediation method was applied for AMD at Horobetsu mine. The schwertmannite is generated by iron-oxidizing bacteria with Fe²⁺ and SO₄^2- in acidic mine waters. Its efficiency in As uptake through sorption has been documented in the natural attenuation in Nishinomaki. This study demonstrates the advantages and feasibility of utilizing schwertmannite as a novel remediation method for AMD.
At first, the drainage and sludge in Horobetsu mine were characterized to investigate the current method. Secondly, the synthesis of schwertmannite and arsenic removal from the drainage were examined. Results of the characterization indicated that the sludge contained much residual calcite and arsenic by adsorption to the ferrihydrite. The calcite, however, may be dissolved with rainwater. After the reaction, pH of the sludge should be increased and then, which presumably causes the desorption of arsenic from the ferrihydrite. On the contrary, schwertmannite, successfully synthesized from Horobetsu mine drainage by pH adjustment to pH 3.5, removed As almost completely from the drainage.
A novel processing method proposed based on the above results consists of the following procedure: (1) arsenic in AMD is removed by the schwertmannite, process, (2) As-free schwertmannite is spontaneously synthesized from the drainage by pH adjustment to pH 3.5 and iron-oxidizing bacteria, and supplied to (1), and (3) the drainage is neutralized in order to remove sulfate by using the waste concrete. In the above procedure, As-bearing schwertmannite, As-free schwertmannite and gypsum are produced as byproduct. This novel processing method is therefore defined as combination system including the removal of arsenic, iron, and sulfate and the resource recovery from AMD.

Factors Affecting to the Viscosity of Montmorillonite/Water Suspension 1. Relationship between Electrical Conductivity and Viscosity in Aqueous Montmorillonite Suspensions
SUZUKI KEIZO; SATO TSUTOMU; YONEDA TETSURO; ENOTO HIROYUKI
粘土科学, 46, 2, 120, 130, The Clay Science Society of Japan, 04 Jun. 2007
Japanese, Montmorillonite samples were obtained from the suspension of Yamagata-bentonite with four purification processes to investigate underlying conditions which cause their viscosity. The samples were also treated repeatedly by 70% 2-propanol solution with different times to prepare the samples with different amounts of water soluble salts. Moreover, the treatments with sodium acetate-acetic acid solution (pH:5.0) and NaCl solution were conducted to dissolve Ca-carbonate minerals and to homo-ionize the samples. Electrical conductivity (relating to the amount of water soluble salts) and viscosity of the montmorillonite suspensions were measured for the samples with different pre-treatments. From the results of measurements, the following conclusions were obtained. 1. Viscosities of the montmorillonite suspension are negatively correlated with their electrical conductivities. Under the higher content of water soluble salts (higher electrical conductivity), viscosity of the samples is lower. 2. In the salt concentration of 2.5 × 10^<-6>〜2.5 × 10^<-4>moll^<-1>, zeta-potentials of the samples are almost constant. 3. Even under the same content of water soluble salts, the obvious difference in viscosity of the samples with four purification processes was observed. The order of viscosity among the samples was not changed even after treatments with sodium acetate-acetic acid solution (pH:5.0) and NaCl solution. Consequently, the difference in the viscosity, therefore, may not arise from the external chemical conditions such as content of water soluble salts and species of exchangeable cation. 4. The observed difference in viscosity among the samples would be attributed to the difference in aspect ratios or particle sizes (sizes in a-b plane) of montmorillonite in the samples with different purification processes.

Uptake of dissolved arsenic during the retrieval of silica from spent geothermal brine
Chelo Supnet Pascua; Mio Minato; Shingo Yokoyama; Tsutomu Sato
GEOTHERMICS, 36, 3, 230, 242, Jun. 2007
English, Scientific journal

Long-range transport of polycyclic aromatic hydrocarbons (PAHs) from the eastern Asian continent to Kanazawa, Japan with Asian dust
Shuji Tamamura; Tsutomu Sato; Yukie Ota; Xilong Wang; Ning Tang; Kazuichi Hayakawa
ATMOSPHERIC ENVIRONMENT, 41, 12, 2580, 2593, Apr. 2007
English, Scientific journal

XAFS study of as in K-T boundary clays
Shunsuke Sakai; Akira Yoshiasa; Hiroshi Arima; Maki Okube; Chiya Numako; Tsutomu Sato
AIP Conference Proceedings, 882, 274, 276, 2007, [Peer-reviewed]
English, International conference proceedings

Environmental Behavior and Management of Hazardous Inorganic Anions in Nature
SATO Tsutomu; FUKUSHI Keisuke; YONEDA Tetsuro
Journal of MMIJ, 123, 4, 132, 144, 社団法人 資源・素材学会, 2007
Japanese, The contamination of groundwater with dissolved cationic chemical species such as Ni, Cu, Zn, Cd, Hg, and Pb has been an important concern in the past. Dissolved anionic species such as As has received a more important focus due to its prevalence in West Bengal as a toxic contaminant affecting several hundreds of thousands of people. Nitrates and phosphates from excessive use of fertilizers in agriculture and detergents in households are grim reminders of dissolved anion contamination in rural groundwater supplies. Chemical weathering of slag and fly ash recycled as cement materials can rel...

Preparation and Characterization of Highly Purified Montmorillonite
Keizo SUZUKI; Shinsuke TAKAGI; Tsutomu SATO; Tetsuro YONEDA
Nendokagaku, 46, 3, 147, 155, The Clay Science Society of Japan, 2007
Japanese, Highly purified montmorillonite (HP-Mont) was prepared to understand the original characteristics of montmorillonite by the combined treatments such as sedimentation, super centrifugation, treating with alcohol solution, decarbonation with acetic acid -sodium acetate buffer solution, Na-exchange with sodium chloride solution. The prepared montmorillonite was comprehensively characterized, and the characteristics of HP-Mont were compared with commercial montmorillonite (Com-Mont) and summarized as follows; 1. Results of XRD, TG-DTA, CEC, LC measurements showed that the HP-Mont was extremely pure montmorillonite. Layer charge was 0.410 e.s.u./half unit cell, 30% of the layer charge was located in tetrahedral layers, and the rest was in octahedral layers. 2. After removal of quartz and soil organics, the HP-Mont showed white color in powder and transparent in aqueous suspension. 3. Aqueous suspension of the HP-Mont had high viscosity and the viscosity for 1.5% suspension of the HP-Mont was higher than that for 4.0% suspension of the Com-Mont. 4. Aqueous suspension of the HP-Mont was slightly acidic due to removal of sodium carbonate and calcium carbonate. 5. The planar size of the HP-Mont was comparatively smaller than that of the Com-Mont, as the result of separation by super-centrifugation. 6. Zeta potential of the HP-Mont was slightly larger than that of the Com-Mont. due to the result of removal of soluble salts.

Natural attenuation of antimony in mine drainage water
Mitsuo Manaka; Nobuyuki Yanase; Tsutomu Sato; Keisuke Fukushi
GEOCHEMICAL JOURNAL, 41, 1, 17, 27, 2007
English, Scientific journal

Size distribution and anthropogenic sources apportionment of airborne trace metals in Kanazawa, Japan
Xilong Wang; Tsutomu Sato; Baoshan Xing
CHEMOSPHERE, 65, 11, 2440, 2448, Dec. 2006, [Peer-reviewed]
English, Scientific journal

無機材料と環境技術 放射性廃棄物処分への無機材料の利用
佐藤努
J Soc Inorg Mater Jpn, 13, 325, 441-447, 447, 無機マテリアル学会, 01 Nov. 2006
Japanese

Utilization of Inorganic Materials in Radioactive Waste Disposal
SATO Tsutomu
Journal of the Society of Inorganic Materials,Japan, 13, 325, 441, 447, 無機マテリアル学会, 01 Nov. 2006
Japanese

Competitive sorption of pyrene on wood chars
XL Wang; T Sato; BS Xing
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 40, 10, 3267, 3272, May 2006
English, Scientific journal

Dehydration processes in the meta-autunite group minerals meta-autunite, metasaleeite, and metatorbernite
ohey Suzuki; Tsutomu Sato; Hiroshi Isobe; Toshihiro Kogure; Takashi Murakami
American Mineralogist, 90, 8/9, 1308, 1314, 2006, [Peer-reviewed]

様々な鉄鋼スラグから生成する陰イオン吸着材の生成と安定性
伊藤亜希子; 佐藤努; 片桐有由未; 湊美緒; 伊藤健一; 米田哲朗
資源・素材2006（福岡）講演資料集 (C6),, 101, 102, 2006
Japanese, Research society

シュベルトマナイトを用いたヒ素汚染土壌不溶化の長期安全評価
佐藤努; 福士圭介; 高田盛生; 伊藤健一; 池田穂高; 川西琢也; 米田哲朗
資源・素材2006（福岡）講演資料集 (C6), 95, 96, 2006
Japanese, Research society

シュベルトマナイトを用いたヒ素汚染水や土壌の浄化方法
伊藤健一; 池田穂高; 福士圭介; 川西琢也; 佐藤努; 米田哲朗
資源・素材2006（福岡）講演資料集 (C6), 91, 94, 2006
Japanese, Research society

Decomposition of Polycyclic Aromatic Hydrocarbon (PAHs) on mineral surface under controlled relative humidity
S Tamamura; T Sato; Y Ota; N Tang; K Hayakawa
ACTA GEOLOGICA SINICA-ENGLISH EDITION, 80, 2, 185, 191, 2006
English, Scientific journal

Mineralogical and geochemical constraints on arsenic mobility in a Philippine geothermal field
C Pascua; T Sato; G Golla
ACTA GEOLOGICA SINICA-ENGLISH EDITION, 80, 2, 230, 235, 2006
English, Scientific journal

Environmental issues and regional cooperation in East Asia. Environmental issues in East Asia caused by yellow sand and combustion dust.
HAYAKAWA KAZUICHI; IWASAKA YASUNOBU; SATO TSUTOMU
環境情報科学, 34, 3, 17-28, 14 Nov. 2005
Japanese

Recent Trends and Perspective of Researches on the Alteration of Bentonite Buffer Materials in High-Level Radioactive Waste Repository
INOUE Atsuyuki; KAWANO Motoharu; KUWAHARA Yoshihiro; KOZAKI Tamotsu; KOMINE Hideo; SATO Tsutomu; TSUKIMURA Katsuhiro
Nendo Kagaku, 45, 1, 31, 61, The Clay Science Society of Japan, 11 Nov. 2005
Japanese

Sorption and displacement of pyrene in soils and sediments
XL Wang; T Sato; BS Xing
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 39, 22, 8712, 8718, Nov. 2005, [Peer-reviewed]
English, Scientific journal

Health risks of heavy metals to the general public in Tianjin, China via consumption of vegetables and fish
XL Wang; T Sato; BS Xing; S Tao
SCIENCE OF THE TOTAL ENVIRONMENT, 350, 1-3, 28, 37, Nov. 2005
English, Scientific journal

Using a surface complexation model to predict the mature and stability of nanoparticles
K Fukushi; T Sato
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 39, 5, 1250, 1256, Mar. 2005, [Peer-reviewed]
English, Scientific journal

Source identification, size distribution and indicator screening of airborne trace metals in Kanazawa, Japan
XL Wang; T Sato; BS Xing; S Tamamura; S Tao
JOURNAL OF AEROSOL SCIENCE, 36, 2, 197, 210, Feb. 2005, [Peer-reviewed]
English, Scientific journal

Stability of polycyclic aromatic hydrocarbons on mineral surfaces
Tamamura Shuji; Sato Tsutomu; Ota Yukie; Tang Ning; Hayakawa Kazuichi
Abstracts for Annual Meeting of the Mineralogical Society of Japan, 2005, 95, 95, Japan Association of Mineralogical Sciences, 2005
多環芳香族炭化水素 (PAH)は化石燃料の不完全燃焼に伴い大気中に放出される。これらの中には発癌性を有するものがあることから、PAHの地表環境での運命は大きな関心が持たれている。しかし鉱物質エアロゾルや有機エアロゾルに伴われるＰＡＨの安定性についての研究は少なく、不明な点が多い。本研究ではピレンをＰＡＨの代表物質とし、石英、αアルミナ、酸性白土（スメクタイト）およびフミン酸に伴われるピレンの安定性を相対湿度・温度コントロール下で調べた。石英、αアルミナに伴われるピレンは酸性白土やフミン酸に伴われるピレンに比べて分解速度が著しく速く、フミン酸に伴われるピレンを除き、相対湿度が増加すると分解速度は速くなる傾向が認められた。本発表では、様々な相対湿度におけるエアロゾル構成物質とＰＡＨの相互作用について考察した結果を報告する。

Effect of dissolved silica concentration on dissolution rate of smectite under highly alkaline condition
otani yusuke; tsutsui masanori; yokoyama shingo; sato tsutomu
Abstracts for Annual Meeting of the Mineralogical Society of Japan, 2005, 104, 104, Japan Association of Mineralogical Sciences, 2005
高レベル放射性廃棄物やTRU廃棄物を地層に処分する計画がある。その計画の中で緩衝材として高い物理・化学的緩衝性を持つスメクタイトを主成分としたベントナイトを使用することが考えられている。しかし坑道の補強のために大量のセメントが使われ、そのセメントが地下水と反応して劣化し、高いアルカリ性を示す地下水となり、主成分鉱物であるスメクタイトを溶解させ期待される性能が発揮されないという懸念がある。そのため、地層処分においてスメクタイトのアルカリ環境での溶解速度の決定が安全評価上重要な課題となっている。鉱物の溶解速度の一般式はLasaga(1995，1998)により示されている。スメクタイトの溶解に関する研究は数多くなされており、Ｃａｍａ et al(2000)ではｐH8．8、80℃におけるスメクタイトの溶解速度に関するΔGの影響と溶存シリカ濃度の影響の式を示している。ΔGによる影響は通常TST理論に基づいて説明されるが、Cama et al(2000)で示された式はTST理論で裏付けされるものではなく、実験から得られたデータより得られた経験式である。したがって、この経験式が、処分場で問題となっている高いｐH条件で適応可能であるのかが不明である。そこで本研究では、高アルカリ条件において溶存シリカ濃度を調整し、異なるΔG条件下で溶解実験を行うことにより、高アルカリ条件でのスメクタイトの溶解速度とΔGの関係を明らかにすることを目的とした。試料は、山形県月布産ベントナイトから精製したスメクタイト（クニピア_-_P：クニミネ工業製）を用いた。Yokoyama.et.al(2005)により試料の化学構造式は次のように示された。Na_0.50K_0.01Ca_0.06(Al_1.52Fe_0.09Mg_0.33)(Si _3.82Al_0.18)O₁₀(OH) ₂・nH ₂O本研究では、フロースルー系におけるによるスメクタイトの溶解実験を行った。実験で設定したシリカ濃度は、0.3MのNaOH にメタケイ酸ナトリウムを添加して50、100、250、500μMに設定した。また実験温度は、処分初期の地層処分場の条件を模擬するために70℃とした。固液比は1：1000とし、異なるシリカ濃度に設定した反応溶液を0.2ml/minの流量で送液し、容器内で10時間滞留するようにした。反応溶液の作成および回収は、大気中のCO2の影響によるpＨの変化を避けるため、高純度窒素雰囲気に保ったグローブボックス内で行った。溶液の回収は24時間おきに最大280時間まで行った。反応後の溶液は、モリブデンブルー法によりSi濃度を分光光度計で測定し、Al濃度についてはICP-MSにより測定した。また、反応後の固相を回収し、AFM(原子間力顕微鏡) による粒子観察から粒子の溶解による体積変化を求め、そのデータから溶解速度を見積った。実験の結果、回収した溶液は反応初期に高いSi濃度が見られたが、その後定常状態に到達していた。得られた溶存Si濃度は、初期に設定したSi濃度が50μM以上のものではそれよりも低く見積もられた。これは、シリカが高pH環境の下でポリマー化したためと考えられる。AFM観察による溶解速度の算出の結果、Siを高濃度に加えた実験で、溶解速度が遅延されていることを確認した。このことは、溶液中のΔＧが上昇するにつれ、スメクタイトの溶解速度が遅延されることを示唆している。ΔＧと溶解速度との関係は、熱力学データベースJNC990900を用いてΔＧを計算するとＣａｍａ ｅｔ ａｌ(2000)式でよく表現されていることが分かる。しかし、熱力学データベースにはSiの溶存種を見積もるのに必要な金属錯体等の形成に関するのデータの不確かさがあるため、現時点ではΔGの見積もりに不確定性が残ってしまう。今後データベースの精査とともにΔＧに関してより詳細な議論が必要であると考えられる。

Yokoyama, S., Kuroda, M. and Sato, T. (2005) Atomic force microscopy study of montmorillonite dissolution under highly alkaline condition. Clays and Clay Minerals, 53, 147-154.*
2005

黄砂と燃焼粉塵による東アジア地域の環境問題
環境情報科学, 34, 17, 28, 2005

Wang, X.., Sato, T. and Xing, B. (2005) Sorption and displacement of pyrene in soils and sediments. Environ. Sci. Technol., 39, 8712-8718.*
2005

Suzuki, Y., Sato, T., Isobe, H., Kogure, T. and Murakami, T. (2005) Dehydration processes of the meta-autunite group minerals, meta-autunite, metasaleéite and metatorbernite. Am. Min. 90, 1308-1314.*
2005

Yokoyama, S., Watanabe, Y., Uno, H., Tamura, K., Sato, T. and Yamada, H.(2005) Adsorption and desorption behavior of ammonium ion on expandable illite, Transaction of the Material Research Society of Japan, 34, 1045-1048.*
2005

Murakami, T., Sato T., Ohnuki T. and Isobe H. (2005) Field evidence for uranium nanocrystallization and its implications for uranium transport. Chem. Geol. 221, 117-126.*
2005

Fukushi, K., and Sato, T. (2005) Using a Surface Complexation Model to Predict the Nature and Stability of Nanoparticles. Environ. Sci. Technol., 39, 1250-1256.*
2005

Pascua C., Charnock J., Polya D., Sato T., Yokoyama S., and Minato, M.(2005) Arsenic-bearing smectite from the geothermal environment, Mineralogical Magazine, 69, 899-908, 2005.*
2005

Wang, X.., Sato, T., Xing, B., Tamamura, S. and Tao, S. (2005) Source identification, size distribution and indicator screening of airborne trace metals in Kanazawa, Japan. J. Aerosol Sci. 36, 197-210.*
2005

Kida Y., Mita Y., Fukushi K. and Sato T. (2005) Mechanisms of alkaline buffering by peat and quantitative estimation of its buffering capacity. Landscape and ecological engineering, 1, 127-134.*
2005

Detection of C-S-H Gel Formed during Bentonite-cement Interactions
Masahito Shibata; Shunkichi Sutou; Hiroyuki Sakamoto; Tsutomu Sato
Transactions of the Atomic Energy Society of Japan, 4, 3, 227, 231, 日本原子力学会, 2005
English, Scientific journal

A Comparisons of Bentonite from Kawamukai and Umenokida in Tsukinuno Mine, Yamagata
YOKOYAMA SHINGO; KURODA MASATO; TSUTSUI MASANORI; SATO TSUTOMU; SUZUKI KEIZO; ENOTO HIROYUKI
粘土科学, 44, 2, 45, 52, The Clay Science Society of Japan, 16 Dec. 2004
Japanese, Characterization of the Kawamukai (KB) and Umenokida (UB) bentonites from the Tsukinuno bentonite mines were investigated by XRD analysis, XRF analysis, ICP-MS, petrography, SEM, AFM, and surface area determination by the N_2-BET method. XRD analyses and petrography identified quartz, feldspar, zeolite facies, calcite, and montmorillonite in the Tsukinuno bentonite. The zeolite facies in KB and UB are analcime and clinoptilolite, respectively. The Mg/(Ca+Mg) ratio of calcite based on ICP-MS in KB is higher than that in UB. These results suggest that KB has undergone a higher alteration than UB. Since no heat source such as an igneous intrusion has been reported to affect the bentonite deposits, the difference in the degree of alteration can be attributed to the effective stress applied on the deposits during folding. This is supported by the higher angle of deformation found in the KB than in UB. The layer charge distribution in montmorillonite from both bentonites indicates a bimodal distribution. Mean layer charge of Kawamukai-montmorillonite (KM) is 0.31 esu/half unit cell, which is slightly higher than Umenokida-montmorillonite (0. 29 esu/half unit cell). However, this difference in mean layer charges does not affect expandability largely. Thickness of both montmorillonite layers (i.e. KM and UM) determined with AFM is close to the height of a single hydrated montmorillonite layer. The ab dimension of UM is bigger than that of KM. This results in a large difference in the edge surface area per unit mass for UM and KM. Since the edge surface areas are more reactive, differences in physical and chemical properties such as adsorptive ability and permittivity would arise for the two bentonites.

Carbon and carbonate minerals
KUROSAWA Masanori; MIYAWAKI Ritsuro; SATO Tsutomu; SATISH-KUMAR Madhusoodhan; MURAKAMI Hiroyasu
Japanese Magazine of Mineralogical and Petrological Sciences, 33, 3, 96, 97, Japan Association of Mineralogical Sciences, 2004
Japanese, Scientific journal

Arsenate sorption on schwertmannite
Fukushi K; Sato T; Yanase N; Minato J; Yamada H
American Mineralogist, 89, 11-12, 1728, 1734, 2004, [Peer-reviewed]

Natural analogue studies of waste disposal : Do not stick to "analog" too much
SATO Tsutomu; FUKUSHI Keisuke
Resource geology. Shigen-chishitsu, 53, 2, 193, 200, 資源地質学会, 25 Dec. 2003
Japanese, Studies on natural analogues are indispensable ways to define geological disposal concepts, and to provide convincing support for the performance assessment of long-term radioactive isolation. Long-term predictions on the behavior of the natural environment are recognized to be fraught with uncertainty if based solely on information from limited and short-term observations or experiments. In this context, natural analogue studies have been extensively carried out by many researchers in the world. However, natural analogue studies have been recently scaled down and financially limited due to: (1) limited study areas that are systematically analogous to disposal sites, which is the primary prerequisite for analogue studies; (2) deficiency in defining natural analogues; and (3) lack of clarity on the utilization of data obtained in the studies and how it can contribute to performance assessment.
Recent issues surrounding the performance assessment that should be addressed urgently in assessing the impacts on the disposal systems include: (1) retardation of anionic species such as ¹⁴CO₄^2-, H⁷⁹SeO₃^-, ⁹⁹TcO₄^-; and (2) bentonite-hyper alkaline fluid (i.e. cement pore fluid) interactions. If the criteria for natural analogue studies are strictly defined, it would be very difficult to find suitable study areas. In this review, the required conditions and strategies for future natural analogue studies are discussed and summarized based on case studies of natural attenuation of arsenic in acid mine drainage and mineral paragenesis under hyper alkaline condition in Oman ophiolite.

Expandability and Layer Charge Characteristics of Mica Clay Minerals
YOKOYAMA Shingo; SATO Tsutomu; WATANABE Takashi
Nendo Kagaku, 43, 2, 64, 70, 日本粘土学会, 15 Dec. 2003
Japanese, Expandability and layer charge characteristics of diagenetic illite (IMt-1) and hydrothermal sericite (HS) were investigated after alkylammonium ion exchange with potassium, and subsequently, Na Ca and Mg ion exchange. After the ion exchange, both mica clay minerals clearly exhibited expandabilitiy by intercalation of alkylammouium iion, and glycerol and water saturation in their interlayer. Differences in the expandability are mainly attributed to layer charge characteristics of expandable layers, which enabled an estimation of the distribution and amount of layer charge through X-ray diff...

Solid-solution reactions in As(V) sorption by schwertmannite
K Fukushi; T Sato; N Yanase
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 37, 16, 3581, 3586, Aug. 2003, [Peer-reviewed]
English, Scientific journal

地球サブシステムとしての粘土圏の役割—環境親和物質としての粘土—フェリハイドライト・シュベルトマナイトの生成と環境親和物質としての役割
福士圭介; 佐藤努
粘土科学, 42, 3, 148, 153, 28 Mar. 2003
Japanese

Formations of Ferrihydrite and Schwertmannite and Those Role for Environment-Friendly Materials
FUKUSHI Keisuke; SATO Tsutomu
Nendo Kagaku, 42, 3, 148, 153, 日本粘土学会, 28 Mar. 2003
Japanese

A natural attenuation of arsenic in drainage from an abandoned arsenic mine dump
Fukushi K; Sasaki M; Sato T; Yanase N; Amano H; Ikeda H
Applied Geochemistry, 18, 8, 1267, 1278, 2003, [Peer-reviewed]

Characterization of hot particles in surface soil around the Chernobyl NPP
N. Yanase; H. Isobe; T. Sato; Y. Sanada; T. Matsunaga; H. Amano
Eighth International Conference on "Low-level measurements of actinides and long-lived radionuclides in biological and environm, 252, 2, 233, 239, 2002, [Peer-reviewed]

Clay Crystallography and Environmental Material Science for our 21st Century
SATO Tsutomu
Nihon Kessho Gakkaishi, 43, 1, 76, 80, 日本結晶学会, 28 Feb. 2001
Japanese, At the end of 20th century, we have to summarize a progress of clay crystallography in 20th century and mention what should be needed to make a breakthrough to clay application for environmental material science in new century. Clay crystallography in 20th century illustrated that clay is a crystalline material with some stacking disorder one-dimensionally. For our 21st century with continuous development, however, we have to understand the clay surface structure and charge distribution on the surface. If we understand those, it would be available to control the performance of clay material...

P18 花崗岩の風化に伴う粘土鉱物の生成とその表面特性の変化
福士 圭介; 佐藤 努; 米田 哲朗
粘土科学討論会発表論文抄録, 45, 192, 193, 日本粘土学会, 2001
Japanese

A24 シュベルトマナイトの陰イオン収着機構
福士 圭介; 佐藤 努; 柳瀬 信之
粘土科学討論会発表論文抄録, 45, 82, 83, 日本粘土学会, 2001
Japanese

A22 高アルカリ溶液中でのスメクタイトの溶解キネティクス
佐藤 努; 横山 信吾; 岡田 朋子; 福士 圭介
粘土科学討論会発表論文抄録, 45, 78, 79, 日本粘土学会, 2001
Japanese

A10 群馬県東平旧鉱山地域におけるヒ素の自然浄化
福士 圭介; 佐々木 美和; 佐藤 努
粘土科学討論会発表論文抄録, 44, 52, 53, 日本粘土学会, 2000
Japanese

Field and laboratory examination of uranium microcrystallization and its role in uranium transport
T Murakami; T Ohnuki; H Isobe; T Sato
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXIV, 663, 971, 977, 2000, [Peer-reviewed]
English, International conference proceedings

SHRIMP measurements of U and Pb isotopes in the Koongarra secondary ore deposit, Northern Australia
T Nagano; T Sato; IS Williams; M Zaw; TE Payne; PL Airey; N Yanase; H Isobe; T Ohnuki
GEOCHEMICAL JOURNAL, 34, 5, 349, 358, 2000
English, Scientific journal

HRTEM evidence for the process and mechanism of saponite-to-chlorite conversion through corrensite
Takashi Murakami; Tsutomu Sato; Atsuyuki Inoue
American Mineralogist, 84, 7-8, 1080, 1087, Mineralogical Society of America, 1999, [Peer-reviewed]
English, Scientific journal

Uranium micro-isotopic analysis of weathered rock by a Sensitive High Resolution Ion Microprobe (SHRIMP II)
T Sato; N Yanase; IS Williams; W Compston; M Zaw; TE Payne; PL Airey
RADIOCHIMICA ACTA, 82, 335, 340, 1998, [Peer-reviewed]
English, Scientific journal

Crystal chemistry and microstructures of uranyl phosphates
Y Suzuki; T Murakami; T Kogure; H Isobe; T Sato
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXI, 506, 839, 846, 1998, [Peer-reviewed]
English, International conference proceedings

Iron nodules scavenging uranium from groundwater
T Sato; T Murakami; N Yanase; H Isobe; TE Payne; PL Airey
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 31, 10, 2854, 2858, Oct. 1997, [Peer-reviewed]
English, Scientific journal

Mobility of uranium during weathering
T Murakami; T Ohnuki; H Isobe; T Sato
AMERICAN MINERALOGIST, 82, 9-10, 888, 899, Sep. 1997, [Peer-reviewed]
English, Scientific journal

Hydration and Structure of Adsorbed Water on Clay Minerals
SATO Tsutomu
Journal of the Mineralogical Society of Japan, 25, 3, 99, 110, 日本鉱物学会, 01 Jul. 1996
Japanese

Weathering of chlorite in a quartz-chlorite schist .1. Mineralogical and chemical changes
T Murakami; H Isobe; T Sato; T Ohnuki
CLAYS AND CLAY MINERALS, 44, 2, 244, 256, Apr. 1996, [Peer-reviewed]
English, Scientific journal

Change in layer charge of smectites and smectite layers in illite/smectite during diagenetic alteration
Tsutomu Sato; Takashi Murakami; Takashi Watanabe
Clays and Clay Minerals, 44, 4, 460, 469, Clay Minerals Society, 1996, [Peer-reviewed]
English, Scientific journal

Mechanism of saleeite formation at the Koongarra secondary ore deposit
T Murakami; H Isobe; T Ohnuki; T Sato; N Yanase; J Kiyoshige
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XIX, 412, 809, 816, 1996, [Peer-reviewed]
English, International conference proceedings

URANIUM FIXATION DURING URANIUM MIGRATION UNDER AN OXIDIZING CONDITION
T MURAKAMI; K TSUZUKI; T SATO; H ISOBE; T OHNUKI
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XVIII, PTS 1 AND 2, 353, 1219, 1226, 1995, [Peer-reviewed]
English, International conference proceedings

MODELLING STUDY ON URANIUM MIGRATION IN ROCKS UNDER WEATHERING CONDITION
T OHNUKI; T MURAKAMI; H ISOBE; T SATO; N YANASE
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XVIII, PTS 1 AND 2, 353, 1227, 1234, 1995, [Peer-reviewed]
English, International conference proceedings

EFFECT OF CRYSTALLOCHEMISTRY OF STARTING MATERIALS ON THE RATE OF SMECTITE TO ILLITE REACTION
T SATO; T MURAKAMI; H ISOBE; T OHNUKI
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XVIII, PTS 1 AND 2, 353, 239, 246, 1995, [Peer-reviewed]
English, International conference proceedings

VARIETY AND VARIABILITY OF BENTONITES AS BUFFER MATERIALS IN RADIOACTIVE-WASTE DISPOSAL
T SATO
JOURNAL OF THE ATOMIC ENERGY SOCIETY OF JAPAN, 36, 5, 405, 412, May 1994
Japanese

REDISTRIBUTION OF STRONTIUM AND CESIUM DURING ALTERATION OF SMECTITE TO ILLITE
T OHNUKI; T MURAKAMI; T SATO; H ISOBE
RADIOCHIMICA ACTA, 66-7, 323, 326, 1994, [Peer-reviewed]
English, Scientific journal

SIGNIFICANCE OF THE EFFECT OF MINERAL ALTERATION ON NUCLIDE MIGRATION
T MURAKAMI; T OHNUKI; H ISOBE; T SATO; N YANASE; H KIMURA
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XVII, 333, 645, 652, 1994, [Peer-reviewed]
English, International conference proceedings

Redistribution of strontium and cesium during alteration of smectite to illite
T Ohnuki; T Murakami; T Sato; H Isobe
CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE, 327, 330, 1994, [Peer-reviewed]
English, International conference proceedings

スメクタイト-クロライト反応の機構 : HRTEMによる検討
村上 隆; 佐藤 努; 井上 厚行
粘土科学, 33, 3, 35, 36, 日本粘土学会, 30 Dec. 1993
Japanese

10 スメクタイト-イライト反応の機構 : HRTEMによる検討
佐藤 努; 村上 隆
粘土科学討論会発表論文抄録, 37, 33, 34, 日本粘土学会, 1993
Japanese

CHANGES IN SORPTION FORMS OF RADIOACTIVE CESIUM AND STRONTIUM DURING SMECTITE TO ILLITE ALTERATION DIFFERENCE IN SORPTION FORMS BETWEEN DYNAMIC AND STATIC CONDITIONS
T OHNUKI; T MURAKAMI; T SATO; H ISOBE
JOURNAL OF THE ATOMIC ENERGY SOCIETY OF JAPAN, 34, 12, 1139, 1142, Dec. 1992
Japanese, Scientific journal

Effects of layer charge, charge location, and energy change on expansion properties of dioctahedral smectites
Tsutomu Sato; Takashi Watanabe; Ryohei Otsuka
Clays and Clay Minerals, 40, 1, 103, 113, Clay Minerals Society, 1992, [Peer-reviewed]
English, Scientific journal

Development of Relative Humidity Control Cell for Infrared Absorption Spectrum Measurement and its Applications for the Study of Clay Minerals
SATO Tsutomu; ANDO Yoshiyuki; WATANABE Takashi; OTSUKA Ryohei
Nendo Kagaku, 31, 3, 143, 149, 日本粘土学会, 20 Nov. 1991
Japanese, A relative humidity (RH) control cell for measurement of infrared absorption spectra (ReCCIR) was developed to investigate states and amounts of water in some clay minerals. The reproducible infrared spectrum can be obtained by the ReCCIR under the condition of 0-100% RH at 25℃. Using the ReCCIR, the following investigations are performed : the observation of hysteresis in hydration-dehydration process of smectite and the rehydration properties of the dehydrated smectite, and the quantitative estimation of halloysite ratio in the mixture of kaolinite and halloysite.

Study on Kaolin Minerals of the Seto Group in Onada District, Tajimi City, Gifu Prefecture, Japan
ANDO Yoshiyuki; SATO Tsutomu; WATANABE Takashi; OBA Takanobu
Nendo Kagaku, 31, 3, 150, 160, 日本粘土学会, 20 Nov. 1991
Japanese, The Plio-Pleistocene Seto Group is distributed in the Onada district, Tajimi City; Gifu Prefecture. The Tokiguchi Formation that is the lower part of the Seto Group is rich in clay. The constituent minerals of the sediment are quartz, kaolin mineral and smectite. Some samples contain small amount of mica mineral and lepidochrocite. Moreover, the mineralogical properties of the clay were examined by means of X-ray diffraction, electron microscopy and infrared spectroscopy In the present investigation, the kaolin mineral in the Tokiguchi Formation is mainly composed of b-axis disordered kaoli...

Conversion of Smectite-Illite in Tertiary Shales and Sandstones(Special ReviewDiagenesis)
SATO Tsutomu; ISOBE Hiroshi; WATANABE Takashi
Nendo Kagaku, 31, 1, 32, 37, 日本粘土学会, 20 May 1991
Japanese, Diagenetic illite/smectite interstrafitied minerals (I/S) from Neogene shales and sandstones in the regions of the Yachi River and Nakanomata River, Niigata Pref. (Japan) are examined by X-ray diffraction (XRD). The decrease of smectite percentage in I/S takes place continuously from 100% to 30%. The I/S from sandstone laminae tend to be of higher expandability than from adjacent shale laminae belonging to the same horizon. Some of XRD patterns indicate that intermediate stage exists at the conversion process from g=0 to g=1. It is due to the mixture or the segregated structure with random ...

P11 2八面体型・3八面体型スメクタイトの膨張性
佐藤 努; 大塚 良平; 渡辺 隆
粘土科学討論会発表論文抄録, 35, 104, 105, 日本粘土学会, 1991
Japanese

P10 スメクタイト : イライト反応への出発物質の影響
村上 隆; 佐藤 努; 磯部 博志
粘土科学討論会発表論文抄録, 35, 102, 103, 日本粘土学会, 1991
Japanese

P12 スメクタイト : イライト反応の初期過程
佐藤 努; 村上 隆; 磯部 博志; 渡辺 隆
粘土科学討論会発表論文抄録, 35, 106, 107, 日本粘土学会, 1991
Japanese

Properties of expandable layer in illitization of smectites.
SATO TSUTOMU; FUJII MIKA; WATANABE TAKASHI; OTSUKA RYOHEI
鉱物学雑誌, 19, 17, 22, 日本鉱物学会, Mar. 1990
Japanese

Diagenetic alteration of the Neogene sedimentary rocks in the no district, Niigata prefecture.
SATO TSUTOMU; WATANABE TAKASHI
岩鉱, 84, 8, 259, 269, 日本岩石鉱物鉱床学会, Aug. 1989
Japanese

56 混合層鉱物のexpandable layerの層電荷
渡辺 隆; 佐藤 努
粘土科学討論会発表論文抄録, 32, 84, 84, 日本粘土学会, 1988
Japanese

45 相対湿度制御下における膨潤性粘土鉱物の層間水分子層について (I)
佐藤 努; 渡辺 隆
粘土科学討論会発表論文抄録, 31, 69, 69, 日本粘土学会, 1987
Japanese

46 相対湿度制御下における膨潤性粘土鉱物の層間水分子層について (II)
渡辺 隆; 佐藤 努
粘土科学討論会発表論文抄録, 31, 70, 70, 日本粘土学会, 1987
Japanese

P1-08 相対湿度制御による膨潤性粘土鉱物の層電荷の見積り
渡辺 隆; 佐藤 努
粘土科学討論会発表論文抄録, 30, 8, 8, 日本粘土学会, 1986
Japanese

Geochemical behavior of Fe and Mg in the Moodies Banded Iron Formations, Barberton Greenstone Belt, South Africa
SUGIURA Ryohei; OTAKE Tsubasa; OHTOMO Yoko; SATO Tsutomu; SHIN Ki-Cheol, 日本地球惑星科学連合大会予稿集(Web), 2022, 2022

シンポジウム 低温蛇紋岩化反応プロセスとその生物地球化学的意義について—Low-temperature serpentinization reaction process and its biogeochemical significance
佐藤 努, ペドロジスト = Pedologist / 日本ペドロジー学会 編, 65, 1, 14, 17, Jun. 2021
つくば : 日本ペドロジー学会, Japanese

Temporal change of permeability in macro-fractured granite by accumulation of fine-grained minerals
Yoshitaka NARA; Masaji KATO; Tsutomu SATO; Masanori KOHNO; Toshinori SATO, EGU General Assembly 2020, EGU2020-1217, May 2020

Permeability measurement for macro-fractured granite using water including clay
Yoshitaka NARA; Masaji KATO; Tsutomu SATO; Masanori KOHNO; Toshinori SATO, 2019 ISRM Specialized Conference, the 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future (YSRM2019&REIF2019), Paper No.P-4, Dec. 2019

講演再録 ナチュラルアナログ研究のすゝめ—An encouragement of natural analogue study—Vol.25 No.2 ; 特集 第34回バックエンド夏期セミナー
佐藤 努, 原子力バックエンド研究 = Journal of nuclear fuel cycle and environment, 25, 1・2, 113, 118, Dec. 2018
東京 : 日本原子力学会バックエンド部会, Japanese

汚染水処理から発生する使用済み合成ゼオライト及びチタン酸塩の長期保管における固化マトリックスとしてのジオポリマーの適用性
戸田賀奈子; SOONTHRONWIPHAT Natatsawas; TWO Hnin Wint Wint; 小林佑太朗; 黒田知眞; 森永祐加; 胡桃澤清文; YOGARAJAH Elakneswaran; 杉山隆文; KE Xinyuan; PROVIS John; 佐藤努, 日本原子力研究開発機構JAEA-Review(Web), 2018-017, 2018

Fe isotope fractionations relating to the ore formation processes in volcanogenic massive sulfide deposits
OTAKE Tsubasa; NAKAMURA Shunsuke; YAMADA Ryoichi; SHIN Ki-Cheol; ONO Shuji; SATO Tsutomu, 日本地球惑星科学連合大会予稿集(Web), 2017, 2017

充填鉱物を有する花崗岩のき裂の水理開口幅の評価
加藤昌治; 奈良禎太; 岡崎勇樹; 河野勝宣; 佐藤稔紀; 佐藤努; 福田大祐; 高橋学, 日本材料学会学術講演会講演論文集, 66th, 2017

粘土を含む水が流れる環境下での破壊した花崗岩における透水性の変化
奈良禎太; 加藤昌治; 岡崎勇樹; 河野勝宣; 福田大祐; 佐藤努; 佐藤稔紀; 高橋学, 資源・素材(Web), 2017, 2017

Effect of filling minerals on fracture permeability of granite
Masaji KATO; Yoshitaka NARA; Masanori KOHNO; Toshinori SATO; Tsutomu SATO; Daisuke FUKUDA; Manabu TAKAHASHI, Proceedings of the 14th Japan Symposium on Rock Mechanics, 14th, Paper No.68, Jan. 2017

放射性廃棄物の地層処分 : 素材科学と地球科学における知のインテグレーションの必要性—特集 放射性物質と素材プロセッシング
佐藤 努, 金属, 86, 11, 987, 993, Nov. 2016
東京 : アグネ技術センター, Japanese

Importance of temperature control during permeability test for measuring hydraulic constants of rock
Masaji KATO; Yoshitaka NARA; Masanori KOHNO; Toshinori SATO; Daisuke FUKUDA; Tsutomu SATO; Manabu TAKAHASHI, Rock Mechanics and Rock Engineering: From the Past to the Future (Resat Ulusay et al. editors), Proceedings of EUROCK 2016 - the 2016 ISRM International Symposium, 259, 263, Aug. 2016

Precipitation of calcium compound on silicate rock surface
Yoshitaka NARA; Ryuta KUWATANI; Masanori KOHNO; Yusaku HAMADA; Masaji KATO; Tsutomu SATO; Toshinori SATO, Creative Development of Rock Mechanics and Engineering, Proceedings of the 2016 Korea-Japan Joint Symposium on Rock Engineering & 2016 Spring Conference and General Assembly of Korean Society for Rock Mechanics, May 2016

花崗岩の透水性に及ぼすき裂修復の影響
加藤昌治; 奈良禎太; 二里竜平; 河野勝宣; 佐藤稔紀; 佐藤努; 福田大祐; 高橋学, 日本材料学会学術講演会講演論文集, 65th, 2016

岩石と粘土におけるトランジェントパルス法を用いた透水係数測定
加藤昌治; 奈良禎太; 岡崎勇樹; 河野勝宣; 佐藤稔紀; 佐藤努; 福田大祐; 高橋学, 資源・素材(Web), 2016, 2016

有害無機陰イオンのマネージメントにおける地球化学モデリングの重要性—Importance of Geochemical Modeling in Management of Hazardous Inorganic Anions
佐藤 努, The proceedings of Symposium on Geo-Environments and Geo-Technics = 社会地質学シンポジウム論文・要旨集, 25, 89, 94, Nov. 2015
千葉 : 社会地質学会, Japanese

放射性廃棄物処分の安全研究における地盤工学技術者の盲点
佐藤 努, 地盤工学会誌 = Geotechnical engineering magazine : 土と基礎 / 地盤工学会会誌編集委員会 編, 63, 6, 12, 15, Jun. 2015
コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > 学術機関 > 学協会, 東京 : 地盤工学会, Japanese

人工バリア「ベントナイト」のトリビアな話
佐藤 努, Energy for the future, 39, 1, 18, 21, 2015
東京 : ナショナルピーアール, Japanese

大島花崗岩における長期サブクリティカルき裂進展計測
奈良禎太; 春井友貴; 河野勝宣; 加藤昌治; 福田大祐; 佐藤努, 資源・素材(Web), 2015, 2015

岩石の透水試験における温度制御の重要性
加藤昌治; 奈良禎太; 河野勝宣; 福田大祐; 佐藤稔紀; 佐藤努; 高橋学, 資源・素材(Web), 2015, 2015

方解石の熱ルミネセンス特性
小形学; 長谷部徳子; 福士圭介; 藤井直樹; 山川稔; 佐藤努; 伊藤一充, フィッション・トラックニュースレター, 27, 14, 16, 08 Dec. 2014
Japanese

The Relationship Between Smectite/ Illite Ratios and Diagenetic History of Sandstone Reservoir, Batu Ayau Formation, Upper Kutai Basin, East Kalimantan, Indonesia
T. Puji Astuti; S. Surjono; I. Warmada; D.P. Kusuma; Y. Tsukada; T. Otake; T. Sato, International Petroleum Technology Conference 2014, Kuala Lumpur Convention Center, Kuala Lumpur, Malaysia, 17895, Dec. 2014
English, Summary international conference

無機汚染物質の除去・隔離のための層状化合物—Layered Compounds for Removal and Isolation of Inorganic Pollutants—特集 無機層状化合物(2)
佐藤 努, Journal of the Society of Inorganic Materials, Japan : セッコウ・石灰・セメント・地球環境の科学 / 無機マテリアル学会 編, 21, 368, 42, 48, Jan. 2014
東京 : 無機マテリアル学会, Japanese

放射線対策,除染に役立つマテリアル 天然多孔質セラミックスの珪藻土 : 環境中に放出された放射性セシウムのパッシブ除染材としての利用—Diatomite as a natural porous ceramics : Application for passive decontamination of radioactive cesium emitted to the environment
佐藤 努, Material stage / 技術情報協会 編, 13, 5, 5, 7, Aug. 2013
資料形態 : テキストデータ プレーンテキスト
コレクション : 国立国会図書館デジタルコレクション > デジタル化資料 > 雑誌, 東京 : 技術情報協会, Japanese

Example of Cesium Sorption Database in natural minerals
横山信吾; 山田裕久; 渡辺雄二郎; 中田弘太郎; 田村堅志; 佐藤努; 伊藤健一; 八田珠郎, Nendokagaku, 52, 1, 32, 39, Aug. 2013
The Clay Science Society of Japan, Japanese, Summary national conference

第2回Asian Clay会議に参加して
佐藤 努, 粘土科学, 51, 2, 50, 51, 2013
一般社団法人 日本粘土学会, Japanese

福島第一原発事故で発生した放射性廃棄物の処理・処分に内在する課題—The Problematics in Treatment and Disposal of The Radioactive Waste Produced by Accident at Fukushima Dai-ichi Nuclear Power Plant—特集 セラミックスによる放射性廃棄物の処理方法
佐藤 努, Ceramics Japan = セラミックス : bulletin of the Ceramic Society of Japan, 47, 11, 859, 863, Nov. 2012
東京 : 日本セラミックス協会, Japanese

菱刈鉱山から産するスメクタイトの粒径特性と安定同位体組成
松本晃; 米田哲朗; 佐藤努; 大竹翼; 石山大三; 高橋亮平; 松葉谷治, 日本鉱物科学会年会講演要旨集, 2012, 216, 15 Sep. 2012
Japanese

Ca(OH)₂溶液におけるモンモリロナイトの溶解速度—pHおよびC‐S‐H生成の影響—
木嶋達也; 中林亮; YOGARAJAH Elakneswaran; 小田治恵; 大竹翼; 佐藤努; 米田哲朗, 日本原子力学会秋の大会予稿集(CD−ROM), 2012, ROMBUNNO.B50, 622, 03 Sep. 2012
Ca(OH)2溶液におけるモンモリロナイトの溶解速度をフロースルー実験により算出した。溶解速度に対するpHの影響は先行研究で明らかにされているNaOH溶液におけるものと同様であった。一方、pHやCa濃度の条件によっては二次生成物としてC-S-Hが生成することが認められた。C-S-Hの生成がモンモリロナイトの溶解速度にどのような影響を与えるかを地球科学モデリングによって評価した。, Atomic Energy Society of Japan, Japanese

低温蛇紋岩化作用から学ぶ高アルカリ環境の地球・生物資源科学—Geo- and bio-resource science and technology learnt from the processes at hyperalkaline environment from low temperature serpentinization—総特集 オマーンに湧出する高アルカリ泉から学ぶ アルカリ環境の地球・生物資源科学
佐藤 努, 月刊地球 = Chikyu monthly / 月刊地球編集部 編, 34, 3, 125, 129, Mar. 2012
日野 : 海洋出版, Japanese

オマーンに湧出する高アルカリ泉から学ぶアルカリ環境の地球・生物資源科学 低温蛇紋岩化作用から学ぶ高アルカリ環境の地球・生物資源科学
佐藤努, 月刊地球, 34, 3, 125-129, 179, 01 Mar. 2012
海洋出版, Japanese

オマーンに湧出する高アルカリ泉から学ぶアルカリ環境の地球・生物資源科学 オマーン北部地域の地下水・河川水の同位体研究
上田晃; 柴田知之; PYTHON Marie; 芳川雅子; 佐藤努, 月刊地球, 34, 3, 142-147, 147, 01 Mar. 2012
海洋出版, Japanese

オマーンに湧出する高アルカリ泉から学ぶアルカリ環境の地球・生物資源科学 高アルカリ泉周辺で生成する二次生成物の鉱物学とその反応速度論
松原勇武; 星野純; 安楽総太郎; 安楽総太郎; 佐藤努; 米田哲朗, 月刊地球, 34, 3, 163-167, 167, 01 Mar. 2012
海洋出版, Japanese

オマーンに湧出する高アルカリ泉から学ぶアルカリ環境の地球・生物資源科学 高アルカリ環境に棲む魚類—生理・生態とその生物学的意義—
鈴木雅一; 安楽総太郎; 安楽総太郎; 佐藤努; VICTOR Reginald, 月刊地球, 34, 3, 147-153, 163, 01 Mar. 2012
海洋出版, Japanese

オマーンに湧出する高アルカリ泉から学ぶアルカリ環境の地球・生物資源科学 アルカリ環境で生成する鉱物による陰イオンの収着とその長期挙動
安楽総太郎; 安楽総太郎; 松原勇武; 星野純; 佐藤努; 米田哲朗, 月刊地球, 34, 3, 173-179, 179, 01 Mar. 2012
海洋出版, Japanese

フィリピン北東部に分布するSaileベントナイトの成因—ナチュラルアナログ研究としての成立性の検証—
塚田康元; 藤田健太; 中林亮; 佐藤努; 米田哲朗; 山川稔; 藤井直樹; 並木和人; 笠間丈志; PASCUA C; ARCILLA C; ALEXANDER R, 資源・素材学会北海道支部春季講演会講演要旨集, 2012, 27-28, 2012
Japanese

沈殿相として層状複水酸化物を用いた新しいニッケル含有廃水処理法の開発
岡橋東子; 西内亨; 佐藤努; 米田哲朗, 資源・素材学会北海道支部春季講演会講演要旨集, 2012, 33-34, 2012
Japanese

A26 福島第一原発事故による放射能汚染の背景と課題(天然鉱物等の無機材料を利用して放射性物質を除去・回収できるのだろうか?,提案型セッション)
佐藤 努, 粘土科学討論会講演要旨集, 55, 136, 137, 2011
一般社団法人日本粘土学会, Japanese

Isotope compositions of groundwater and surface waters in the northern region, Oman
Ueda Akira; Shibata Tomoyuki; Python Marie; Yoshikawa Masako; Sato Tsutomu, Abstracts of Annual Meeting of the Geochemical Society of Japan, 58, 0, 216, 216, 2011
Isotopic compositions of groundwater and river waters in northern part of Oman were analyzed to examine theri origins. Most of water samples are of meteoric origin and water-rock interaction will be discussed., GEOCHEMICAL SOCIETY OF JAPAN

Report on "Workshop on Physics and Chemistry of Bentonite for Radioactive Waste Disposal"
横山 信吾; 横地 琢哉; 佐藤 努, 原子力バックエンド研究 Journal of nuclear fuel cycle and environment, 17, 2, 85, 87, Dec. 2010
日本原子力学会, Japanese

ナチュラルアナログ;自然に学ぶ地層処分 数万年先を予測する工学技術とは?第3回(最終回)
北山一美; 佐藤努; 吉田英一, ΑΤΟΜΟΣ, 52, 10, 657-662, 662, 01 Oct. 2010
日本原子力学会, Japanese

土の化学・物理と鉱物学
佐藤努, 地盤工学会誌, 58, 10, 43, 50, 01 Oct. 2010
コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > 学術機関 > 学協会, 東京 : 地盤工学会, Japanese

Natural Analogues / Supporting Geological Disposal : Gaining Evidence of Predictability on 100ka Timescales
KITAYAMA Kazumi; SATO Tsutomu; YOSHIDA Hidekazu, Ατομοσ, 52, 10, 657, 662, 01 Oct. 2010
日本原子力学会, Japanese

土の化学・物理と鉱物学
佐藤 努, 地盤工学会誌, 58, 10, 43, 50, 01 Oct. 2010
コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > 学術機関 > 学協会, 社団法人地盤工学会, Japanese

B03 Sorption behavior of fluorine in Si-Al-Mg mineral system at alkaline condition
Xiaoji Liu; Sato Tsutomu; Opiso Einstine; Yoneda Tetsuro, 粘土科学討論会講演要旨集, 54, 82, 83, 07 Sep. 2010
The Clay Science Society of Japan, English

B01 銅・亜鉛含有廃水処理における層状複合金属複水酸化物の利用 : 自然に学ぶ新しい廃水処理技術の開発(口頭発表,一般講演)
岡本 浩紀; 森本 和也; 安楽 総太郎; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 54, 78, 79, 07 Sep. 2010
日本粘土学会, Japanese

ナチュラルアナログ;自然に学ぶ地層処分 数万年先を予測する工学技術とは?第2回
北山一美; 佐藤努; 吉田英一, ΑΤΟΜΟΣ, 52, 9, 553-558, 558, 01 Sep. 2010
日本原子力学会, Japanese

Natural analogues/Supporting geological disposal : Gaining Evidence of Predictability on 100ka Timescales
KITAYAMA Kazumi; SATO Tsutomu; YOSHIDA Hidekazu, Ατομοσ, 52, 9, 553, 558, 01 Sep. 2010
日本原子力学会, Japanese

地球工学技術における化学スペシエーションの重要性—地球工学技術者のニーズと分析化学者への要望—
佐藤努, KEK Proc, 2010-4, 440-483, Aug. 2010
Japanese

Natural analogues / Supporting geological disposal : Gaining evidence of predictability on 100ka timescales
YOSHIDA Hidekazu; KITAYAMA Kazumi; SATO Tsutomu, Ατομοσ, 52, 8, 473, 477, 01 Aug. 2010
日本原子力学会, Japanese

Prediction of ionic adsorption and multi–ionic transport in cementitious materials
Elakneswaran Yogarajah; Nawa Toyoharu; Sato Tsutomu; Kurumisawa Kiyofumi; Iwasa Akihito, Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan, 2010, 0, 836, 836, 2010
Cementitious materials are being used for encapsulation, back filling, and grouting purposes in deep geological repositories of long – lived radioactive waste. The long – term performance of cementitious materials has been investigating for safety disposal of radioactive waste. The durability performance of cementitious materials is mainly determined by resistance to transport of aggressive substances, however remain poorly understood. In this study, a thermodynamic integrated model has been developed to simulate multi-ionic transport in cementitious materials with considering ionic adsorption. The model has been validated against measured experimental data., Atomic Energy Society of Japan, Japanese

A11 組成や構造の異なる鉱物によるアミノ酸重合触媒作用と相対湿度の影響(口頭発表,一般講演)
弘山 郁織; 大田 由貴恵; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 53, 38, 39, 10 Sep. 2009
日本粘土学会, Japanese

B6 モンモリロナイト粒子のアスペクト比と懸濁液中における粒子の会合構造(口頭発表,一般講演)
鈴木 啓三; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 53, 78, 79, 10 Sep. 2009
日本粘土学会, Japanese

P32 休廃止鉱山からの銅、亜鉛含有廃水におけるhydrowoodwarditeの生成 : 効率的で新しい廃水処理方法の開発のために(ポスター発表,一般講演)
岡本 浩紀; 森本 和也; 安楽 総太郎; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 53, 198, 199, 10 Sep. 2009
日本粘土学会, Japanese

P14 高アルカリ環境下におけるモンモリロナイトの溶解キネティクス : 溶存AlとSi濃度およびΔGrの影響(ポスター発表,一般講演)
千野 大輔; 佐藤 努; 大谷 祐介; 中林 亮; 高山 英樹; 米田 哲朗, 粘土科学討論会講演要旨集, 53, 162, 163, 10 Sep. 2009
日本粘土学会, Japanese

P26 X線CTを用いたアルカリ-ベントナイト相互作用の観察(ポスター発表,一般講演)
中林 亮; 千野 大輔; 河原木 千恵; 佐藤 努; 米田 哲朗; 金子 勝比古, 粘土科学討論会講演要旨集, 53, 186, 187, 10 Sep. 2009
日本粘土学会, Japanese

P16 高アルカリ環境下におけるスメクタイトの溶解速度への溶存Alの影響(ポスター討論)
千野 大輔; 佐藤 努; 大谷 祐介; 高山 英樹; 米田 哲朗, 粘土科学討論会講演要旨集, 52, 188, 189, 03 Sep. 2008
日本粘土学会, Japanese

A8 加熱処理したモンモリロナイトの分散液の粘度(口頭発表,一般講演)
鈴木 啓三; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 52, 46, 47, 03 Sep. 2008
日本粘土学会, Japanese

A14 ハイドロタルサイトに対する陰イオンの特異吸着性とそれに関連した陰イオン特性(口頭発表,一般講演)
森本 和也; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 52, 58, 59, 03 Sep. 2008
日本粘土学会, Japanese

A26 高アルカリ環境での含マグネシウム鉱物の生成とヒ素の不可逆的固定(口頭発表,一般講演)
佐藤 努; 浅井 篤史; 森本 和也; 安楽 総太郎; 米田 哲朗; 沼子 千弥, 粘土科学討論会講演要旨集, 52, 82, 83, 03 Sep. 2008
日本粘土学会, Japanese

P35 様々な鉱物のアミノ酸重合触媒作用と相対湿度の影響(ポスター討論)
弘山 郁織; 大田 由貴恵; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 52, 226, 227, 03 Sep. 2008
日本粘土学会, Japanese

P30 天然高アルカリ条件下における陰イオンの収着と鉱物の生成について(ポスター討論)
安楽 総太郎; 森本 和也; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 52, 216, 217, 03 Sep. 2008
日本粘土学会, Japanese

B19 粘土とセメントの相互作用に関するXAFSを用いた研究(口頭発表,一般講演)
沼子 千弥; 坂本 浩幸; 芳賀 和子; 柴田 真仁; 大和田 仁; 黒澤 進; 山田 憲和; 中澤 俊之; 佐藤 努; 胡桃澤 清文; 安楽 総大郎, 粘土科学討論会講演要旨集, 52, 122, 123, 03 Sep. 2008
日本粘土学会, Japanese

P51 土壌汚染対策におけるシュベルトマナイトの活用(ポスター討論)
伊藤 健一; 太田 慶子; 池田 穂高; 福士 圭介; 川西 琢也; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 52, 258, 259, 03 Sep. 2008
日本粘土学会, Japanese

Sorption characteristics of oxyanions during and after allophane precipitation
E. M. Opiso; T. Sato; T. Yoneda, GEOCHIMICA ET COSMOCHIMICA ACTA, 72, 12, A707, A707, Jul. 2008
English, Summary international conference

Natural analogue study on mineral formation and anion uptake at the hyperalkaline conditions
S. Anraku; K. Morimoto; T. Sato; T. Yoneda, GEOCHIMICA ET COSMOCHIMICA ACTA, 72, 12, A28, A28, Jul. 2008
English, Summary international conference

Irreversible fixation of Arsenic during formation of Mg-bearing minerals at alk, aline condition
T. Sato; A. Asai; K. Morimoto; S. Anraku; T. Yoneda, GEOCHIMICA ET COSMOCHIMICA ACTA, 72, 12, A825, A825, Jul. 2008
English, Summary international conference

アルカリ環境下におけるサポナイト溶解の速度論的研究—放射性廃棄物処分施設における人工バリア材料としての適応可能性検討—
横山信吾; 佐藤努, 電力中央研究所地球工学研究所研究報告, N07020, 25P, 19,巻頭1〜4, Mar. 2008
電力中央研究所, Japanese

Kinetics study on saponite dissolution under alkaline conditions: applicability of saponite as engineered barrier for radioactive waste disposal facility
横山 信吾; 佐藤 努, 電力中央研究所報告, 研究報告, N, 7020, 1, 19,巻頭1〜4, Mar. 2008
電力中央研究所, Japanese

粘土基礎講座I 4. 粘土の特性と利用
佐藤努, 2008

アルカリ環境で生成する鉱物による無機陰イオンの取り込み
佐藤努; 浅井篤史; 安楽総太郎; 森本和也; アインシュタイン オピソ; 沼子千弥; 米田哲朗, 資源・素材, 2008, C/D/E, 2008

XAFS Study for interaciton between clayminerals and cements
Numako Chiya; Kurumizawa Kiyofumi; Anraku Sotaro; Sakamoto Hiroyuki; Haga Kazuko; Shibata Masahito; Ohwada Hitoshi; Kurosawa Susumu; Yamada Norikazu; Nakazawa Toshiyuki; Sato Tsutomu, Abstracts of annual meeting of The Clay Science Society of Japan, 52, 0, 45, 45, 2008
放射性廃棄物の地層処理に関して人工バリアとして設計されているベントナイトとセメントの相互作用を評価するために、放射光を用いたXAFS分析を適用した。XAFS測定は高エネルギー物理学研究機構物質構造科学研究所放射光実験施設Photon FactoryのBL9Aにおいて行った。試料としては合成CSHと種々の粘土鉱物、また人工バリア模擬体を３年程度浸水実験した試験片に対して行った。その結果、XAFS法が試料中のCaの化学形の決定及びベントナイトーセメント相互作用の評価に有用であることが解った。, The Clay Science Society of Japan, Japanese

第51回粘土科学討論会(札幌大会)報告
米田 哲朗; 佐藤 努, 粘土科学, 46, 4, 219, 221, 26 Dec. 2007
日本粘土学会, Japanese

低レベル放射性廃棄物処分施設における人工バリアの耐久性評価—アルカリ環境下でのベントナイト系材料中のモンモリロナイト溶解に関する研究—
横山信吾; 佐藤努; 大谷祐介; 高山英樹; 中村邦彦; 田中幸久; 廣永道彦, 電力中央研究所地球工学研究所研究報告, N07006, 27P, 21,巻頭4p, Nov. 2007
電力中央研究所, Japanese

Durability assessment for engineered barrier system of low-level radioactive waste disposal facility: study on dissolution behavior of montmorillonite in bentonite materials under alkaline conditions
横山 信吾; 佐藤 努; 大谷 祐介, 電力中央研究所報告, 研究報告, N, 7006, 1, 21,巻頭4p, Nov. 2007
電力中央研究所, Japanese

高アルカリ環境における圧縮スメクタイトの溶解・変質
高山 英樹; 筒井 政則; 佐藤 努; 米田 哲朗, 日本鉱物学会・学術講演会,日本岩石鉱物鉱床学会学術講演会講演要旨集, 2007, 173, 173, 22 Sep. 2007
Japanese

Generation of hyperalkaline springs and occurrence of hydrotalcite in Oman Ophiolite
MORIMOTO Kazuya; SATO Tsutomu; ANRAKU Sohtaro; ASAI Atsushi; YONEDA Tetsuro, 日本鉱物学会・学術講演会,日本岩石鉱物鉱床学会学術講演会講演要旨集, 2007, 174, 174, 22 Sep. 2007
Japanese

アルカリ溶液の種類が及ぼすスメクタイトの溶解速度への影響
横山信吾; 佐藤努; 中村邦彦; 田中幸久; 広永道彦; 谷智之; 庭瀬一仁, 粘土科学討論会講演要旨集, 51st, 51, 32, 33, 12 Sep. 2007
日本粘土学会, Japanese

A5 ハイドロタルサイト表面に対する無機陰イオンの特異吸着性と物性に与える影響
森本 和也; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 40, 41, 12 Sep. 2007
日本粘土学会, Japanese

P8 高アルカリ泉における沈殿物の生成過程と特性
安楽 総太郎; 森本 和也; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 162, 163, 12 Sep. 2007
日本粘土学会, Japanese

P18 モンモリロナイト粒子のアスペクト比と水分散液の粘度との関係
鈴木 啓三; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 182, 183, 12 Sep. 2007
日本粘土学会, Japanese

P33 フミン酸をコーティングした鉱物へのフェナントレンの吸着とその後の安定性
蒲生 真也; 佐藤 努; 玉村 修司; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 212, 213, 12 Sep. 2007
日本粘土学会, Japanese

P48 Fe含有層状複水酸化物の合成とその熱安定性
森本 和也; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 242, 243, 12 Sep. 2007
日本粘土学会, Japanese

P34 相対湿度制御下でのペプチド結合生成反応における鉱物の触媒作用
大田 由貴恵; 弘山 郁織; 玉村 修司; 佐藤 努, 粘土科学討論会講演要旨集, 51, 214, 215, 12 Sep. 2007
日本粘土学会, Japanese

P32 相対温度制御下における鉱物粒子に伴われるPAHsの安定性
玉村 修司; 佐藤 努; 大田 由貴恵; 蒲生 真也; 弘山 郁織; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 210, 211, 12 Sep. 2007
日本粘土学会, Japanese

P22 高アルカリ環境下におけるスメクタイトの溶解速度への圧縮の影響
高山 英樹; 筒井 政則; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 190, 191, 12 Sep. 2007
日本粘土学会, Japanese

P41 シュベルトマナイト表面における様々な吸着陰イオン種の結合形態と吸着後の安定性の関係
高田 盛生; 福士 圭介; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 51, 228, 229, 12 Sep. 2007
日本粘土学会, Japanese

P14 米国産ボルクレイベントナイトの原鉱石の締固め密度と物性の関係
志々目 正高; 加藤 啓樹; 佐藤 泰; 大西 利満; 佐藤 努, 粘土科学討論会講演要旨集, 0, 51, 174, 175, 12 Sep. 2007
日本粘土学会, Japanese

P19 ベントナイト原鉱石の堆積構造と透水性の関係
河原木 千恵; 佐藤 努; 佐藤 泰; 大西 利満; 志々目 正高; 金子 勝比古; 米田 哲朗, 粘土科学討論会講演要旨集, 0, 51, 184, 185, 12 Sep. 2007
日本粘土学会, Japanese

Adsorption of oxyanions on schwertmannite and its post-adsorption behavior
M. Takada; K. Fukushi; T. Sato; T. Yoneda, GEOCHIMICA ET COSMOCHIMICA ACTA, 71, 15, A994, A994, Aug. 2007
English, Summary international conference

P26.低温における層状ケイ酸塩鉱物の生成に対するアルミニウムの影響(ポスターセッション,第50回粘土科学討論会発表論文抄録)
浅井 篤史; Pascua Chelo; 佐藤 努; 米田 哲朗, 粘土科学, 46, 1, 86, 86, 16 Feb. 2007
日本粘土学会, Japanese

P29.原子間力顕微鏡の画像解析と鉱物の溶解速度算出への応用(ポスターセッション,第50回粘土科学討論会発表論文抄録)
高山 英樹; 大谷 祐介; 筒井 政則; 佐藤 努; 米田 哲郎, 粘土科学, 46, 1, 86, 86, 16 Feb. 2007
日本粘土学会, Japanese

P10.Zinc-stevensite syntheses from aqueous starting materials at relatively low temperatures
パスクワ チェロ; 山田 裕久; 田村 堅志; 八田 珠郎; 佐藤 努, Nendo Kagaku, 46, 1, 84, 84, 16 Feb. 2007
The Clay Science Society of Japan, English

A17.マイクロフォーカスX線CTによるベントナイト : 珪砂混合体の微細構造観察(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
河原木 千恵; 中村 祐亮; 金子 勝比古; 佐藤 努; 米田 哲朗, 粘土科学, 46, 1, 79, 79, 16 Feb. 2007
日本粘土学会, Japanese

A18.携帯型近赤外測定装置を用いたベントナイトライナーの均質性評価(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
中村 祐亮; 河原木 千恵; 佐藤 努; 米田 哲朗, 粘土科学, 46, 1, 80, 80, 16 Feb. 2007
日本粘土学会, Japanese

A22.高アルカリ環境下におけるスメクタイトの溶解速度へのΔGrの影響(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
大谷 祐介; 佐藤 努; 米田 哲朗, 粘土科学, 46, 1, 80, 80, 16 Feb. 2007
日本粘土学会, Japanese

B26.鉱物とPHAsの相互作用(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
玉村 修司; 佐藤 努; 大田 由貴恵; 唐 寧; 早川 和一; 米田 哲朗, 粘土科学, 46, 1, 82, 82, 16 Feb. 2007
日本粘土学会, Japanese

A23.アルカリ環境におけるサポナイト溶解の速度論的研究 : モンモリロナイトの溶解速度との比較(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
横山 信吾; 佐藤 努; 田中 幸久, 粘土科学, 46, 1, 80, 80, 16 Feb. 2007
日本粘土学会, Japanese

B11.シュベルトマナイト鉱物表面における吸着陰イオン種の選択性(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
高田 盛生; 福士 圭介; 佐藤 努; 米田 哲朗, 粘土科学, 46, 1, 78, 79, 16 Feb. 2007
日本粘土学会, Japanese

A14.アルカリ環境におけるスメクタイトの溶解速度とバリア性能の長期評価(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
佐藤 努; 大谷 祐介; 高山 英樹; 米田 哲朗, 粘土科学, 46, 1, 78, 78, 16 Feb. 2007
日本粘土学会, Japanese

A21.モンモリロナイト/水分散液における導電率と粘度との関係(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
鈴木 啓三; 佐藤 努; 榎戸 洋之, 粘土科学, 46, 1, 80, 80, 16 Feb. 2007
日本粘土学会, Japanese

B10.ハイドロタルサイトに対する無機陰イオンの吸着機構 : 端面吸着の影響評価(一般講演 口頭発表,第50回粘土科学討論会発表論文抄録)
森本 和也; 佐藤 努; 米田 哲朗, 粘土科学, 46, 1, 78, 78, 16 Feb. 2007
日本粘土学会, Japanese

A17 マイクロフォーカスX線CTによるベントナイトー珪砂混合体の微細構造観察
河原木 千恵; 中村 祐亮; 金子 勝比古; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 62, 63, 07 Sep. 2006
日本粘土学会, Japanese

A18 携帯型近赤外測定装置を用いたベントナイトライナーの均質性評価
中村 祐亮; 河原木 千恵; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 64, 65, 07 Sep. 2006
日本粘土学会, Japanese

B11 シュベルトマナイト鉱物表面における吸着陰イオン種の選択性
高田 盛生; 福士 圭介; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 108, 109, 07 Sep. 2006
日本粘土学会, Japanese

A21 モンモリロナイト/水 分散液における導電率と粘度との関係
鈴木 啓三; 佐藤 努; 榎戸 洋之, 粘土科学討論会講演要旨集, 50, 70, 71, 07 Sep. 2006
日本粘土学会, Japanese

B10 ハイドロタルサイトに対する無機陰イオンの吸着機構 : 端面吸着の影響評価
森本 和也; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 106, 107, 07 Sep. 2006
日本粘土学会, Japanese

A22 高アルカリ環境下におけるスメクタイトの溶解速度へのΔGrの影響
大谷 祐介; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 72, 73, 07 Sep. 2006
日本粘土学会, Japanese

A14 アルカリ環境におけるスメクタイトの溶解速度とバリア性能の長期評価
佐藤 努; 大谷 祐介; 高山 英樹; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 56, 57, 07 Sep. 2006
日本粘土学会, Japanese

A23 アルカリ環境におけるサポナイト溶解の速度論的研究 : モンモリロナイトの溶解速度との比較
横山 信吾; 佐藤 努; 田中 幸久, 粘土科学討論会講演要旨集, 50, 74, 75, 07 Sep. 2006
日本粘土学会, Japanese

P29 原子間力顕微鏡の画像解析と鉱物の溶解速度算出への応用
高山 英樹; 筒井 政則; 大谷 祐介; 佐藤 努; 米田 哲郎, 粘土科学討論会講演要旨集, 50, 202, 203, 07 Sep. 2006
日本粘土学会, Japanese

B26 鉱物とPAHsの相互作用
玉村 修司; 佐藤 努; 大田 由貴恵; 唐 寧; 早川 和一; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 138, 139, 07 Sep. 2006
金沢大学大学院自然科学研究科環境動態金沢大学薬学部, 日本粘土学会, Japanese

P26 低温における層状ケイ酸塩鉱物の生成に対するアルミニウムの影響
浅井 篤史; Chelo Pascua; 佐藤 努; 米田 哲朗, 粘土科学討論会講演要旨集, 50, 196, 197, 07 Sep. 2006
日本粘土学会, Japanese

GS10: Clays and Environment(7.ジェネラルセッション報告, 第13回国際粘土会議報告)
佐藤 努, 粘土科学, 45, 2, 122, 06 Mar. 2006
日本粘土学会, Japanese

Environmental behavior of plutonium isotopes studied at the area of the Chernobyl accident -transport, partitioning, migration-
MASTUNAGA Takeshi; YANASE Nobuyuki; SANADA Yukihisa; NAGAO Seiya; UENO Takashi; SATO Tsutomu; ISOBE Hiroshi; AMANO Hikaru; Yurij Tkachenko, The Japan Radiation Research Society Annual Meeting Abstracts, 2006, 0, 337, 337, 2006
The behavior of plutonium isotopes was studied in the terrestrial and aquatic environment in the area where the Chernobyl accident took place. Radioactive concentrations and physical and chemical forms of the accident-derived Pu were investigated for soil, surface water, suspended solid, and bottom sediment samples in the vicinity of the Chernobyl nuclear power plant. The migration rate from the contaminated ground of the area by fluvial transport was estimated as about 0.1 % maximally in 1986, the year of the accident. Then it was decreased to as low as 0.01% in 2000. Chemically, most of the plutonium isotopes were found in so-called organic phase and least-soluble phase in soil and suspended solid samples. The same was for the bottom sediment collected at the Pripyat River near the power plant. This chemical form suggests limited mobility and solubility of Pu in the studied environment. This is in contrast to strontium-90 that has been found most soluble among Cs, Sr and Pu radioisotopes in the area and broadly influences on the aquatic environment. This study has also revealed that physical form of transport of Pu in river water was as follows: 60-80% of the total Pu in particulate form in suspended solid ; colloidal form 10-20%; truly dissolved form 10-20%. This phase partitioning is similar to that found for Pu derived from a reprocessing plant effluent in the Rhone River and other instances., Journal of Radiation Research 編集委員会, Japanese

Field evidence for uranium nanocrystallization and its implications for uranium transport
MURAKAMI Takashi; SATO Tsutomu; OHNUKI Toshihiko; ISOBE Hiroshi, Chem Geol, 221, 1-2, 117, 126, 05 Sep. 2005
English

産学官連携による実用化技術への取組み 自然に学ぶ環境浄化技術とその事業化
佐藤努; 伊藤健一; 福士圭介; 池田穂高; 平野武嗣; 橋本晃一, 地質と調査, 2005, 1, 12-16, 36, 10 Mar. 2005
土木春秋社, Japanese

Evaluation of the research on smectite dissolution behavior in a TRU waste disposal system
SATO TSUTOMU, 核燃料サイクル開発機構公開資料, 55P, Feb. 2005
Japanese

自然に学ぶ環境浄化技術とその事業化 (小特集 産学官連携による実用化技術への取組み)
佐藤 努; 伊藤 健一; 福士 圭介, 地質と調査, 2005, 1, 12, 16, 2005
土木春秋社, Japanese

自然に学環境浄化技術とその事業化
地質と調査, 2005年1月号, 12, 16, 2005

P51. 無機化合物による地熱水からのヒ素の除去(第48回粘土科学討論会発表論文抄録)
湊 美緒; パスクア チェロ; 横山 信吾; 佐藤 努, 粘土科学, 44, 2, 103, 103, 16 Dec. 2004
日本粘土学会, Japanese

A21. アルカリ環境におけるスメクタイトの溶解速度式(第48回粘土科学討論会発表論文抄録)
佐藤 努; 黒田 真人; 横山 信吾; 福士 圭介; 筒井 政則; 田中 忠夫; 中山 真一, 粘土科学, 44, 2, 94, 94, 16 Dec. 2004
日本粘土学会, Japanese

A22. 高アルカリ環境下でのスメクタイトの溶解 : バルク溶解実験とAFM溶解実験の比較(第48回粘土科学討論会発表論文抄録)
横山 信吾; 黒田 真人; 佐藤 努, 粘土科学, 44, 2, 94, 94, 16 Dec. 2004
日本粘土学会, Japanese

B25. シュベルトマナイトへの陰イオンの吸着挙動に関する研究(第48回粘土科学討論会発表論文抄録)
高田 盛生; 福士 圭介; 佐藤 努; 柳瀬 信之, 粘土科学, 44, 2, 97, 97, 16 Dec. 2004
日本粘土学会, Japanese

P8. 膨張性雲母粘土鉱物を用いたアンモニウムイオンの吸着(第48回粘土科学討論会発表論文抄録)
横山 信吾; 渡辺 雄二郎; 宇野 光; 田村 堅志; 山田 裕久; 佐藤 努, 粘土科学, 44, 2, 98, 98, 16 Dec. 2004
日本粘土学会, Japanese

P34. 異なる比表面積を持つスメクタイトの溶解速度(第48回粘土科学討論会発表論文抄録)
筒井 政則; 黒田 真人; 横山 信吾; 佐藤 努, 粘土科学, 44, 2, 101, 101, 16 Dec. 2004
日本粘土学会, Japanese

Transportation of PAH by minerals in the atmosphere : PAH accompanyed with Kosa
TAMAMURA Shuji; WANG Xilong; OTA Yukie; SATO Tutomu; TANG Ning; HAYAKAWA Kazuichi, 日本鉱物学会・学術講演会,日本岩石鉱物鉱床学会学術講演会講演要旨集, 2004, 113, 113, 22 Sep. 2004
Japanese

Development of novel processing method learnt to natural attenuation mechanism in acid mine drainage and examination of stability of the precipitation containing arsenic
ITO Kenichi; HASHIMOTO Koichi; FUKUSHI Keisuke; MINATO Mio; OTA Yukie; ITO Akiko; SATO Tsutomu, 日本鉱物学会・学術講演会,日本岩石鉱物鉱床学会学術講演会講演要旨集, 2004, 109, 109, 22 Sep. 2004
Japanese

Stability of surface complexed nanoparticles
FUKUSHI Keisuke; SATO Tsutomu, 日本鉱物学会・学術講演会,日本岩石鉱物鉱床学会学術講演会講演要旨集, 2004, 94, 94, 22 Sep. 2004
English

Geochemistry of hyper alkaline environments::When, where and how have hyper alkaline environments been created? What is happening there?
佐藤 努; 秋田 奈生子; 大世古 光弘; 荒井 章司; 福士 圭介; 横山 信吾, J. Jpn. Soc. Extremophiles, 3, 1, 1_60, 1_67, 2004
THE JAPANESE SOCIETY FOR EXTREMOPHILES, Japanese

Kinetics and Mechanism of Smectite Dissolution.
SATO TSUTOMU; YOKOYAMA SHINGO; KURODA MASATO, 日本原子力研究所JAERI−Conf, 123, Oct. 2003
Japanese

A13 固溶体生成反応としてみたシュベルトマナイトによる As (V) の取り込み
福士 圭介; 佐藤 努; 永野 哲志; 柳瀬 信之; 山田 裕久, 粘土科学討論会講演要旨集, 47, 56, 57, 24 Sep. 2003
日本粘土学会, Japanese

P37 レス・風成塵構成物質への多環芳香族炭化水素の吸着とその安定性
玉村 修司; 王 喜龍; 大田 由貴恵; 佐藤 努, 粘土科学討論会講演要旨集, 47, 222, 223, 24 Sep. 2003
日本粘土学会, Japanese

B26 蛇紋石溶解の速度論的・機構論的研究
倉繁 和也; 横山 信吾; 佐藤 努, 粘土科学討論会講演要旨集, 47, 140, 141, 24 Sep. 2003
日本粘土学会, Japanese

P44 シュベルトマナイトへの陰イオン種の吸着とその後の挙動
高田 盛生; 福士 圭介; 佐藤 努; 柳瀬 信之, 粘土科学討論会講演要旨集, 47, 236, 237, 24 Sep. 2003
日本粘土学会, Japanese

P29 Size distributions of trace metals in aerosol particles in Kanazawa, Japan
Wang Xi long; Sato Tsutomu; Xing Bao shan; Tamamura Shuji, 粘土科学討論会講演要旨集, 47, 206, 207, 24 Sep. 2003
The Clay Science Society of Japan, English

Mechanism and kinetics of smectite dissolution under alkaline conditions
T Sato; M Kuroda; S Yokoyama; K Fukushi; T Tanaka; S Nakayama, GEOCHIMICA ET COSMOCHIMICA ACTA, 67, 18, A415, A415, Sep. 2003
English, Summary international conference

Solid-solution reactions in As(V) sorption by schwertmannite
K Fukushi; T Sato; T Nagano; N Yanase; H Yamada, GEOCHIMICA ET COSMOCHIMICA ACTA, 67, 18, A113, A113, Sep. 2003
English, Summary international conference

P32 アルカリ溶液によるスメクタイト溶解の速度論理的研究
黒田 真人; 佐藤 努; 横山 信吾, 粘土科学, 42, 3, 185, 185, 28 Mar. 2003
スメクタイトのアルカリ溶液による溶解速度を求めるため,強アルカリ溶液から弱アルカリ溶液までの一連のpHにおいて,撹拌フロースルー実験を行い,スメクタイトの溶解速度におけるpHの影響を明らかにした., 日本粘土学会, Japanese

A20 原子間力顕微鏡によるスメクタイト溶解のその場観察
横山 信吾; 佐藤 努; 黒田 真人, 粘土科学, 42, 3, 176, 176, 28 Mar. 2003
酸性・塩基性溶液中でのスメクタイト溶解を原子間力顕微鏡用液中セル内でリアルタイムに観察し,その結果について議論する., 日本粘土学会, Japanese

B1 様々な処理を施したスメクタイトの表面酸/塩基特性
佐藤 努; 福士 圭介; 横山 信吾; 南 大樹; 金川 浩司, 粘土科学, 42, 3, 178, 178, 28 Mar. 2003
硫酸処理,イオン交換水による透析処理,イオン交換樹脂による水素化処理を施したスメクタイトに対し,連続滴定により求めた水溶液系での表面酸/塩基特性や,指示薬法により求めた非水溶液系での表面酸性度の比較を行い,各処理が及ぼすスメクタイトの物性への影響を考察した., 日本粘土学会, Japanese

B1 様々な処理を施したスメクタイトの表面酸/塩基特性
佐藤 努; 福士 圭介; 横山 信吾; 南 大樹; 金川 浩司, 粘土科学討論会講演要旨集, 46, 96, 97, 19 Sep. 2002
日本粘土学会, Japanese

Sorption of As(V) on schwertmannite and its effect on the transformation
K Fukushi; T Sato; N Yanase, GEOCHIMICA ET COSMOCHIMICA ACTA, 66, 15A, A249, A249, Aug. 2002
English, Summary international conference

22-3 土壌中のヒ素の除去について : 不溶化の検討(22.緑化技術)
伊藤 健一; 池田 穂高; 木田 幸男; 福士 圭介; 佐藤 努, 日本土壌肥料学会講演要旨集, 48, 136, 136, 25 Mar. 2002
一般社団法人日本土壌肥料学会, Japanese

23-55 ヒ素の自然浄化 : 微生物の関与による排水からのヒ素の有効除去(23.地域環境)
福士 圭介; 木田 幸男; 荒 美紀子; 池田 穂高; 佐藤 努, 日本土壌肥料学会講演要旨集, 48, 156, 156, 25 Mar. 2002
一般社団法人日本土壌肥料学会, Japanese

22-2 土壌のpH異常改良 : アルカリ土壌の改良方法(22.緑化技術)
酒巻 とも恵; 福士 圭介; 佐藤 努; 木田 幸男; 池田 穂高, 日本土壌肥料学会講演要旨集, 48, 136, 136, 25 Mar. 2002
一般社団法人日本土壌肥料学会, Japanese

Safety Study of Radioactive Waste Management. Natural analogue study on geological barrier.
ONUKI TOSHIHIKO; YANASE NOBUYUKI; IIDA YOSHIHISA; ISOBE HIROSHI; SATO TSUTOMU; MURAKAMI TAKASHI, 日本原子力研究所JAERI−Conf, 82-83, Dec. 2001
Japanese

粘土の特性と利用
佐藤努, 粘土科学, 41, 1, 26, 33, 31 Jul. 2001
The Clay Science Society of Japan, Japanese

Characteristics and Applications of Clays
SATO Tsutomu, Nendo Kagaku, 41, 1, 26, 33, 31 Jul. 2001
The Clay Science Society of Japan, Japanese

A10 群馬県東平旧鉱山地域におけるヒ素の自然浄化 (第44回粘土科学討論会発表論文抄録)
福士 圭介; 佐々木 美和; 佐藤 努, 粘土科学, 40, 2, 119, 119, 30 Nov. 2000
日本粘土学会, Japanese

Geological disposal of radioactive wastes(Explanation of Geologic Term)
Sato Tsutomu, Earth Science (Chikyu Kagaku), 54, 3, 202, 204, 25 May 2000
The Association for the Geological Collaboration in Japan (AGCJ), Japanese

鉱物の変質とそのウランの移行への影響
村上隆; 大貫敏彦; 柳瀬信之; 磯部博志; 佐藤努; 鈴木庸平; 宇都宮聡, 原研施設利用共同研究成果報告書, UTRCN-G-28, 258-262, Dec. 1999
Japanese

海嶺の熱水活動と地下生物圏 4章 熱水環境における地下生物圏 熱水環境におけるバイオミネラリゼーション
田崎和江; 佐藤努; 俵健二; 山村健, 月刊海洋, 211-216, 01 Nov. 1999
Japanese

放射性廃棄物処分におけるバックフィルの利用に関する国際ワ-クショップ
佐藤 努; 柴田 雅博; 市川 康明, 原子力バックエンド研究, 5, 1, 97, 99, Sep. 1998
日本原子力学会, Japanese

Surface Reactions of Minerals(3).
村上隆; 門原博幸; 都築克征; 入船徹男; 関根敬一; 馬場恒孝; 大貫敏彦; 磯部博志; 佐藤努, 原研施設利用共同研究成果報告書, UTRCN-G-25(1995), 271, 283, Jan. 1997
Japanese

Migration Behavior of Uranium in Surface Soil. Uranium Fixation Mechanism Downstream of Uranium Ore Deposit at Koongarra, Australia.
大貫敏彦; 村上隆; 柳瀬信之; 磯部博志; 佐藤努; 関根敬一, 日本地球化学会年会講演要旨集, 1996, 159, Aug. 1996
Japanese

Chlorite-Vermiculite reaction process : Observation by an electron microscope.
土田宗一郎; 村上隆; 大貫敏彦; 柳瀬信之; 磯部博志; 佐藤努, 日本鉱物学会年会講演要旨集, 1996, 156, Jun. 1996
Japanese

Study on Assessment Safety of Geological Disposal of High Level Radioactive Waste. Research on Engineered Barrier. Buffer Material. Long-term Behavior of Backfill Material.
SATO TSUTOMU, 日本原子力研究所JAERI−Research, 37-39, Mar. 1996
Japanese

Study on Assessment Safety of Geological Disposal of High Level Radioactive Waste. Research on Natural Barrier. Natural Analogue Study. Natural Analogue Study at Koongarra, Australia.
ONUKI TOSHIHIKO; YANASE NOBUYUKI; ISOBE HIROSHI; SATO TSUTOMU, 日本原子力研究所JAERI−Research, 72-74, Mar. 1996
Japanese

ウランの再分配―高分解能SEMによる分析
村上隆; 大貫敏彦; 柳瀬信之; 磯部博志; 佐藤努, 日本岩石鉱物鉱床学会・日本鉱物学会・資源地質学会秋季連合学術講演会講演要旨集, 1996, 152, 1996
Japanese

酸化の進行による鉱物の変質とウランの再分配
磯部博志; 村上隆; 大貫敏彦; 柳瀬信之; 佐藤努, 日本岩石鉱物鉱床学会・日本鉱物学会・資源地質学会秋季連合学術講演会講演要旨集, 1996, 153, 1996
Japanese

Surface Reactions of Minerals.
村上隆; 皆川鉄雄; 門原博幸; 都築克征; 岩本晃; 関根敬一; 馬場恒孝; 大貫敏彦; 佐藤努, 原研施設利用共同研究成果報告書, UTRCN-G-24(1994), 306, 307, Jan. 1996
Japanese

Natural Analogue Study of the Oklo Uranium Ore Deposit.
日高洋; 中原弘道; 海老原充; 関根敬一; 大貫敏彦; 柳瀬信之; 磯部博志; 佐藤努, 原研施設利用共同研究成果報告書, UTRCN-G-24(1994), 310, 311, Jan. 1996
Japanese

Mechanism of uranium resitribution at secondary ore deposit.
村上隆; 佐藤努; 磯部博志; 大貫敏彦; 柳瀬信之, 日本原子力学会秋の大会予稿集, 1995, 631, Sep. 1995
Japanese

Geochemical Studies for Geologic Disposal of High-level Radioactive Waste.
NAKAYAMA SHIN'ICHI; SATO TSUTOMU; NAGANO TETSUSHI; YANASE NOBUYUKI; YAMAGUCHI TETSUJI; ISOBE HIROSHI; ONUKI TOSHIHIKO; SEKINE KEIICHI, 日本原子力研究所JAERI−Review, 102P, Jul. 1995
Japanese

緑泥石・雲母の風化と鉄鉱物の生成
佐藤努; 村上隆; 柳瀬信之; 磯部博志; 永野哲志; 大貫敏彦, 日本鉱物学会年会講演要旨集, 1995, 117, May 1995
Japanese

風化に伴うウランの再分配
村上隆; 都築克征; 清重順子; 佐藤努; 磯部博志; 大貫敏彦; 柳瀬信之, 日本鉱物学会年会講演要旨集, 1995, 34, May 1995
Japanese

風化による長石表面の変化
門原博幸; 村上隆; 佐藤努; 磯部博志; 大貫敏彦; 山本春也; GOPPELT‐LANGER P; 青木康; 楢本洋, 日本鉱物学会年会講演要旨集, 1995, 113, May 1995
Japanese

Geochemical processes of uranium migration. (1). Formation of secondary uranium minerals.
磯部博志; 大貫敏彦; 佐藤努; 清重順子; 村上隆, 日本原子力学会春の年会要旨集, 33rd, 460, Mar. 1995
Japanese

Geochemical processes of uranium migration. (2). Uranium fixation mechanism at downstream of the ore deposit.
村上隆; 都築克征; 佐藤努; 磯部博志; 大貫敏彦, 日本原子力学会春の年会要旨集, 33rd, 461, Mar. 1995
Japanese

Geochemical processes of uranium migration. (3). Thermodynamic consideration of uranium mineralization.
大貫敏彦; 磯部博志; 佐藤努; 村上隆, 日本原子力学会春の年会要旨集, 33rd, 462, Mar. 1995
Japanese

酸化・還元境界におけるウラン鉱物の形成
磯部博志; 佐藤努; 柳瀬信之; 大貫敏彦, 日本岩石鉱物鉱床学会・日本鉱物学会・資源地質学会秋季連合学術講演会講演要旨集, 1995, 139, 1995
Japanese

ウラン鉱床下流域でのウラン再分配機構:微結晶ウラン鉱物の沈澱
都築克征; 村上隆; 佐藤努; 磯部博志; 大貫敏彦, 日本鉱物学会年会講演要旨集, 1994, 66, Jun. 1994
Japanese

長石と水の反応 (1) Orthoclaseの初期反応過程
門原博幸; 村上隆; 馬場恒孝; 佐藤努; 磯部博志; 大貫敏彦, 日本鉱物学会年会講演要旨集, 1994, 113, Jun. 1994
Japanese

ウランの移行に及ぼす鉱物の風化の影響 (4) ウラン鉱物の変質
磯部博志; 村上隆; 大貫敏彦; 佐藤努, 日本鉱物学会年会講演要旨集, 1993, 155, Jun. 1993
Japanese

ウランの移行に及ぼす鉱物の風化の影響 (2) 緑泥石の風化過程と速度
佐藤努; 村上隆; 磯部博志; 大貫敏彦, 日本鉱物学会年会講演要旨集, 1993, 153, Jun. 1993
Japanese

ウランの移行に及ぼす鉱物の風化の影響 (3) 風化生成物へのウランの分配
村上隆; 大貫敏彦; 磯部博志; 佐藤努; 中嶋悟; 永野哲志, 日本鉱物学会年会講演要旨集, 1993, 154, Jun. 1993
Japanese

ウランの移行に及ぼす鉱物の風化の影響 (5) モデル検討
大貫敏彦; 村上隆; 磯部博志; 佐藤努, 日本鉱物学会年会講演要旨集, 1993, 156, Jun. 1993
Japanese

ウランの移行に及ぼす鉱物の風化の影響 (1) 研究目的と対象サイト
村上隆; 大貫敏彦; 磯部博志; 佐藤努, 日本鉱物学会年会講演要旨集, 1993, 152, Jun. 1993
Japanese

Relationship between degeneration of clay minerals and redistribution of uranium.
佐藤努; 村上隆; 磯部博志; 大貫敏彦; 柳瀬信之, 粘土科学討論会講演要旨集, 36th, 26, 27, Aug. 1992
Japanese

4.粘土鉱物の変質とウランの再分配の関係(第36回粘土科学討論会発表論文抄録)
佐藤 努; 村上 隆; 磯部 博志; 大貫 敏彦; 柳瀬 信之, 粘土科学, 32, 4, 281, 281, 25 Mar. 1992
日本粘土学会, Japanese

8.熱水合成条件下でのスメクタイトのイライト化にともなうAl濃度とpHの影響(第35回粘土科学討論会発表論文抄録)
大場 孝信; 渡邊 隆; 佐藤 努, 粘土科学, 31, 4, 247, 248, 25 Feb. 1991
日本粘土学会, Japanese

P10.スメクタイト-イライト反応への出発物質の影響(第35回粘土科学討論会発表論文抄録)
村上 隆; 佐藤 努; 磯部 博志, 粘土科学, 31, 4, 252, 252, 25 Feb. 1991
日本粘土学会, Japanese

P12.スメクタイト-イライトの反応の初期過程(第35回粘土科学討論会発表論文抄録)
佐藤 努; 村上 隆; 磯部 博志; 渡辺 隆, 粘土科学, 31, 4, 252, 252, 25 Feb. 1991
日本粘土学会, Japanese

P11.2八面体型, 3八面体型スメクタイトの膨張性(第35回粘土科学討論会発表論文抄録)
佐藤 努; 大塚 良平; 渡辺 隆, 粘土科学, 31, 4, 252, 252, 25 Feb. 1991
日本粘土学会, Japanese

膨張性粘土鉱物の脱水 : 復水反応(第34回粘土科学討論会講演発表論文抄録)
佐藤 努; 山崎 淳司; 大塚 良平; 渡辺 隆, 粘土科学, 30, 4, 259, 259, 27 Feb. 1990
日本粘土学会, Japanese

Laumontite-leonhardite相変化について(第33回粘土科学討論会講演発表論文抄録)
山崎 淳司; 白木 崇裕; 佐藤 努; 大塚 良平; 渡辺 隆, 粘土科学, 29, 3, 136, 136, 25 Nov. 1989
日本粘土学会, Japanese

膨張性粘土鉱物の結晶化学的性質と膨張性の関係(第33回粘土科学討論会講演発表論文抄録)
佐藤 努; 渡辺 隆; 大塚 良平, 粘土科学, 29, 3, 138, 138, 25 Nov. 1989
日本粘土学会, Japanese

Weathering Process of Montmorillonite in the Acid Clay Ore Deposit at Itoigawa District, Niigata Prefecture, Japan
Watanabe Takashi; Sawada Yoriko; Sato Tsutomu; Oba Takanobu, Bulletin of Joetsu University of Education. Sect. 3, Science, physical education, home economics, and industrial arts, 8, 0, 27, 38, 15 Mar. 1989
Joetsu University of Education, Japanese

混合層鉱物のexpandable layer 層電荷(第32回粘土科学討論会講演発表論文抄録)
渡辺 隆; 佐藤 努, 粘土科学, 28, 4, 218, 218, 01 Dec. 1988
日本粘土学会, Japanese

スメクタイトの層間水分子層の形成に対する置換位置の影響(第32回粘土科学討論会講演発表論文抄録)
佐藤 努; 渡辺 隆, 粘土科学, 28, 4, 218, 218, 01 Dec. 1988
日本粘土学会, Japanese

The development of relative humidity control system for x-ray diffractometer and its applications
Watanabe Takashi; Sato Tsutomu, Bulletin of Joetsu University of Education. Sect. 3, Science, physical education, home economics, and industrial arts, 7, 0, 37, 47, 15 Mar. 1988
Joetsu University of Education, Japanese

Interstratified illite/montmorillonite showing the diagenetic process directly : Example of the Tertiary sediments of No district, Niigata prefecture, Japan
Watanabe Takashi; Sato Tutomu, Bulletin of Joetsu University of Education. Sect. 3, Science, physical education, home economics, and industrial arts, 5, 0, 101, 111, Mar. 1986
Joetsu University of Education, Japanese

大学院共通授業科目（教育プログラム）：JICA開発大学院連携プログラム, 2024年, 修士課程, 大学院共通科目

環境プロセス鉱物学, 2024年, 修士課程, 工学院

環境プロセス鉱物学特論, 2024年, 修士課程, 工学院

環境地質学Ⅰ, 2024年, 修士課程, 工学院

環境地質学特論Ⅰ, 2024年, 修士課程, 工学院

環境プロセス鉱物学特論, 2024年, 博士後期課程, 工学院

環境地質学特論Ⅰ, 2024年, 博士後期課程, 工学院

資源循環システム実験Ⅲ, 2024年, 学士課程, 工学部

地球科学, 2024年, 学士課程, 工学部

資源循環システム実験Ⅱ, 2024年, 学士課程, 工学部

資源工学概論, 2024年, 学士課程, 工学部

Full understanding on formation and characteristics of magnesium silicate hydrate
Grants-in-Aid for Scientific Research
01 Apr. 2019 - 31 Mar. 2022
Tsutomu SATO
In this study, the true character (composition, structure, etc.) of magnesium silicate hydrate (M-S-H) was revealed through synthesis experiments and precise characterization of the products, thermodynamic investigations, exploration and production confirmation in various natural environments, and observation of alteration to more stable phase over time on a geological time scale. We were also able to construct and validate a geochemical reaction model and database that can predict the formation of M-S-H. Therefore, it is now possible to use the validated models and databases to predict whether or not M-S-H is produced and the amount of M-S-H produced in various engineering scenarios where M-S-H is expected to be produced.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 19H00878

英知を結集した原子力科学技術・人材育成推進事業 汚染水処理で発生する合成ゼオライトと チタン酸塩のセメント固化体の核種封じ込め性能の理解とモデル化 およびその処分システムの提案
国家課題対応型研究開発推進事業 英知を結集した原子力科学技術・人材育成推進事業
Nov. 2016 - Mar. 2019
佐藤 努
文部科学省, Principal investigator, Competitive research funding

Understanding of host minerals for radioactive cesium fixation and proposal for reasonable volume reduction of the contaminated soils
Grants-in-Aid for Scientific Research
01 Apr. 2015 - 31 Mar. 2018
Sato Tsutomu
Detail observations for the contaminated soils particles collected from different areas in Fukushima prefecture,percentage of the contaminated particles was limited to be only 0.3%.The contaminated particles were categorized to agglomerated weathered biotite, complex of organic matter and weathered biotite and weathered biotite.From the observation,the weathered biotite would be dominant host of radioactive cesium in Fukushima prefecture and supported by adsorption experiments.From our observation,spherical glass particles (so called "Cs ball") were not detected. Therefore, we can conclude that the host of radioactive cesium is the weathered biotite in Fukushima prefecture.Our laboratory experiments showed that the weathered biotite can be collected by magnet.After ball milling crushing and ultra sonic dispersion for agglomerated weathered biotite and complex of organic matter and weathered biotite, the contaminated particles would be efficiently collected by magnetic cobbing machine.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 15H04222

Study of soil interfacial electric phenomena for the preservation of soil-water-air environment
Grants-in-Aid for Scientific Research
01 Apr. 2013 - 31 Mar. 2018
Ishiguro Munehide
In order to increase the nutrient efficiency and prevent the soil water air contamination, we conducted experiments of adsorption and dispersion-flocculation, and survey of paddy fields. We also did application of theoretical analysis to evaluate the phenomena. We elucidated phosphate adsorption in kaolinite and its influence on Ferralsol dispersion-flocculation, Sr adsorption in clays and its restriction of transport in soils, and an anionic surfactant adsorption in highly humic soil. Fundamental method for desalination of Tsunami affected agricultural lands was proposed. Stock efficiency of carbon dioxide in paddy fields was evaluated.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, 25252042

Basic Studies for Developing Rational Treatment and Disposal System of Radioactive Wastes Generated by Fukushima Dai-ichi Nuclear Reactor Accident
Grants-in-Aid for Scientific Research
31 May 2012 - 31 Mar. 2016
Ikeda Yasuhisa; MIMURA Hitoshi; SATOH Nobuaki; NIIBORI Yuichi; KOZAKI Tamotsu; SATOH Tsutomu; SASAKI Takayuki; KIRISHIMA Akira; IDEMITSU Kazuya; INAGAKI Yaohiro; SUZUKI Tatsuya; TAKESHITA Kenji
Basic research for constructing rational treatment and disposal system of radioactive wastes generated by Fukushima Dai-ichi nuclear accident have been performed in three research fields of characteristic of solid and liquid contaminants, treatments of solid and liquid contaminants, and radioactive waste disposal.
As a result, we have obtained many useful data on properties of fuel debris, leaching behavior of nuclides from debris, treatment methods of contaminated water, solidification method of wastes, novel decontamination methods, migration behavior of nuclides in the fields containing salts of high concentrations, and so on. These results are expected to contribute to the management plan of radioactive wastes generated under abnormal conditions in contact with water containing seawater in the Fukushima Dai-ichi nuclear accident, and to the progress of radioactive waste managements.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), Tokyo Institute of Technology, 24226021

Present earth-surface processes and historical environmental changes in East Asia inferred from lake-catchment systems
Grants-in-Aid for Scientific Research
01 Apr. 2011 - 31 Mar. 2015
KASHIWAYA Kenji; HASEBE Noriko; AOKI Tatsuto; FUKUSHI Keisuke; ENDO Noritaka; YAMAMOTO Masayoshi; NAGAO Seiya; SAITO Kyoji; GANZAWA Yoshihiro; SATO Tsutomu; IIDA Hajime; YANG Dong Yoon; NAN Ying; LI Chun-Jing; TANAKA Yukiya; DONDOV Tumurhoo; LIN Jiun Chuan
Analytical results for lacustrine sediments and lake-catchment system survey in East Asia (Mongol, China, Korea, Japan and Taiwan) reveal that: 1) gradual aridification (cooling) began in late-mid Holocene and artificial influences began at about 1000 yrs ago in Northeast China, 2) comparatively rapid aridification (cooling) began in late-mid Holocene and clear artificial influences were detected at about 100 yrs ago in central Taiwan, and 3) clear volcanic activity and post-environmental changes were detected since 1640 in the little ice age period and clear artificial changes after the world war 2nd were detected in lacustrine sediments of North Japan. Observation results in a small lake-catchment system in central Japan reveal that a combination of physical parameters may be available for identifying natural erosion-sedimentation processes from artificial ones.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Kanazawa University, 23240120

Inteligent treatment and disposal of soils contaminated cesium from accident of nuclear power plant at Fukushima
Grants-in-Aid for Scientific Research
2012 - 2012
SATO Tsutomu; KOGURE Toshihiro; NAWA Toyoharu
In this study, we conducted extraction and identification of particles fixed radioactive cesium from the soils at Fukushima to make proposal of applicable separation method for reduction in volume, and leaching experiments to make proposal safety solidification of cesium adsorbed zeolites. As the results of this study, the particles are categorized in the following three types, 1) coagulation of several mineral particles, 2) mineral-organic matter complex, and 3) weathered mica, and separated from non-contaminated particles by wet screening and using diatomite. These particles will be directly disposed after volume reduction of the contaminated soils because cesium already fixed into structure of the minerals in the particles. However, cesium released from the particles must be collected by adsorbents such as zeolite. We confirmed that the zeolite bearing cesium can be safely disposed after encapsulation by slag cement.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, Principal investigator, Competitive research funding, 24360369

放射性廃棄物処分におけるセメント―ペントナイト界面の物質移動
科学研究費助成事業
2009 - 2011
佐藤 努; YOGARAJHA Elakneswaran
本研究により、主に以下の3つについて大きな成果が得られた。
セメントとベントナイトを構成する鉱物表面の性能の決定
ベントナイトの表面性能については数多くの研究報告があるが、セメントの主たる水和鉱物であるカルシウムケイ酸水和物(CSH)の表面特性に関してはあまり詳しく理解されていなかった。本研究では、実験とモデルによる計算結果の照合プロセスにより、CSHの表面特性を明らがにした。CSHの表面特性を明らかにできたことにより、放射性廃棄物処分場における長期性能評価に資する輸送・反応モデルを提示することが可能となった。
セメント鉱物表面と核種の相互作用
セメント鉱物による核種の移行遅延は表面吸着や表面沈殿によるが、それらをモデル計算に組み込むためのパラメータ取得は十分ではなかった。そこで、安全評価上重要な核種と考えられている^<129>I^-を対象として、コールドの拡散実験とモデル計算の結果の比較を行った。その結果、ヨウ素については静電的な吸着は期待できず、比較的容易に移行することが明らかとなった。
様々な反応を統合した熱力学的モデルの開発
上述のように、本研究では地球化学モデリングソフトのPHREEQCを使用して、表面錯体モデル、相平衡モデル、多種イオン拡散モデルを組み合わせ、硬化体中を浸透する塩化物イオンの挙動を評価した。その結果、ここで開発したモデルは、本実験結果や既報の実験結果における塩化物イオンの移動プロファイルおよび様々なセメントにおけるプロファイルの相違を説明できるものであることが明らかとなった。
日本学術振興会, 特別研究員奨励費, 北海道大学, 09F09306

Geo-and bio-resource science and technology learnt from the processes in hyperalkaline springs at Oman
Grants-in-Aid for Scientific Research
2009 - 2011
SATO Tsutomu; MICHIBAYASHI Katsuyoshi; NAGANUMA Takeshi; SUZUKI Masakazu; UEDA Akira; SUGIYAMA Takafumi; MIYASHITA Sumio; SUNAMURA Michinari; FUKUSHI Keisuke; TANAKA Shigeyasu
Study on geo-and bio-resource science and technology learnt from the processes in hyperalkaline springs at Oman was conducted by geologists, geochemists, biologists, engineers to understand geological condition and geo-scientific impact of hyperalkaline springs, adaptation mechanism of microorganisms and fish for hypealkaline condition, long-term stability of natural concrete and effective storage of CO_2 in geological strata. From the results of this study, the following points were cleared ; 1) petrology and structure of geology for production of hyperalkaline springs, 2) kinetics of carbonate formation at the hyperalkaline springs, 3) role of the aragonite and monohydro-calcite on anion migration in groundwater, 4) the highest δD value of hyperalkaline water, 5) existence of new micooganisms and their genes, 6) existence and adaptation to hyperalkaline water of freshwater fishes and frog, 7) strength and long term stability of natural concrete at Oman.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, Principal investigator, Competitive research funding, 21404017

鉱物の共生効果によるアミノ酸重合触媒作用-新しい分子進化工学の創生を目指して-
科学研究費補助金(萌芽研究, 挑戦的萌芽研究)
2007 - 2009
佐藤 努; 福嶋 正巳; 米田 哲朗
21年度は、昨年度より行ってきた構造や組成の異なる単一鉱物のペプチド生成反応に対する触媒作用の比較・検討を継続するとともに、それらの共生効果についての検討を行った。今回検討した鉱物は、Ca-、Na-、H型モンモリロナイト、γ-アルミナ、ヘクトライト、バイデライト、石英、ペリクレイス、カルサイト、ドロマイト、カオリナイト、クリソタイル、ハイドロタルサイトである。今回の実験で生成されたペプチドは、2量体の環状無水物(DKP)と2～6量体の直鎖状ペプチドであった。鉱物を付加しないコントロールと比べると、鉱物を用いた全ての実験で鉱物によるアミノ酸重合触媒作用が認められた。ただし、ペプチドの生成量は使用した鉱物によって顕著な違いが認められ、高い触媒能を示したのはカルサイトやドロマイト等の炭酸塩鉱物であった。また、ほとんどの鉱物は相対湿度50%にて最も高い触媒効果を示し、相対湿度を制御して鉱物表面でのDKP生成を抑制し、より長い直鎖のポリペプチドの生成を可能にしているものと推定する。また、2つの鉱物を混合した系でのペプチド生成反応に対する触媒作用を比較検討したところ、モンモリロナイトとカルサイト、ハイドロタルサイトとカルサイトを混合した系で、単一鉱物を用いた系より顕著に高い触媒作用を示すことが明らかとなった。これはカルサイト表面が負に帯電しているため、アミノ基がカルサイト表面において脱プ...
文部科学省, 萌芽研究, 挑戦的萌芽研究, 北海道大学, Principal investigator, Competitive research funding, 19656236

Study on Micro-Restructuring of Rocklike Materials
Grants-in-Aid for Scientific Research(基盤研究(A))
2007 - 2009
Katsuhiko KANEKO; Hiroshi TAKAHASHI; Toshifumi IGARASHI; Tsutomu SATO; Sumihiko MURATA; Satoru KAWASAKI; Mayumi ITO
A series of experimental studies for the micro-restructuring of rocklike materials has been carried out. Various techniques to improve the physical properties of rocklike materials by reconstructing their microstructures have been developed, i.e., a method to change the rock strength by controlling of micro-cracking, a grout technique using microorganisms, a sealing technique using mineral separation from the ground water and so on.
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(A), 北海道大学, Coinvestigator not use grants, Competitive research funding, 19206095

Developing reliable methods for the design of the immobilization of heavy metals in soil : for the application to heterogeneous systems.
Grants-in-Aid for Scientific Research(基盤研究(B))
2007 - 2009
Takuya KAWANISHI; 佐藤 努; 齋藤 雅彦; 福士 圭介; Tsutomu SATO; Masahiko SAITO; Keisuke FUKUSHI
We summarized the effects of pH, coexisting substances, etc. on the adsorption of arsenic on the adsorbent, schwertmannite, with surface complex model. We found that in the heterogeneous water distribution, diffusive efflux of pollutants obeys power law with the exponent ranging from minus 1.0 to minus 0.5, whereas in regular systems the exponent is fixed to minus 0.5. In addition, we validated the effectiveness of barrier system for immobilization with laboratory experiments. We successfully constructed several sub-models for the design of immobilization in heterogeneous polluted sites.
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 金沢大学, Coinvestigator not use grants, Competitive research funding, 19310047

Long-term environmental changes inferred from lacustrine sediments in East Eurasia-glacial, interglacial and superinterglacial-
Grants-in-Aid for Scientific Research(基盤研究(A))
2006 - 2008
Kenji KASHIWAYA; 長谷部 徳子; 佐藤 務; 青木 賢人; Masayoshi YAMAMOTO; Takayoshi KAWAI; Kouji MINOURA; Hideo SAKAI; Hikaru TAKAHARA; Noriko HASEBE; Keisuke FUKUSHI; Tsutomu SATO; Tatsuto AOKI
フグスグル湖湖底堆積物の採取と分析、バイカル湖湖底堆積物の分析そしてその周辺の環境解析から、ユーラシア東部内陸部における環境変動については以下のことが示唆された。1)最終間氷期(MIS5e)から亜氷期(MIS5d)への移行は急激であり、MIS5dは氷期に相当するような寒冷期であった、2)MIS11は亜氷期を伴う超間氷期であった、3)最終氷期においては内陸部でも5千~1万年スケールのBond Cycleに対応する環境変動があった。
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(A), 金沢大学, Coinvestigator not use grants, Competitive research funding, 18200055

Interaction between polycyclic aromatic hydrocarbons (PAHs) and mineral grains with clarification of PAHs carrier in the atmosphere
Grants-in-Aid for Scientific Research(基盤研究(B))
2005 - 2007
Tsutomu SATO; 早川 和一; 川西 琢也; 柏谷 健二
Long range transport of Polycyclic aromatic hydrocarbons (PAHs) with Asian dust was investigated by collecting Aerosol particles through a year from April 2003 at Kanazawa, Japan. PAHs content in Asian dust particles were highly variable in different Asian dust events. Developed kinetic model showed that sorption rate of less volatile PAHs than BaP on Asian dust particles are too low to be accumulated. The origin of those PAHs in Asian dust particles would be originally PAH-polluted soil particles around industrialized area (e.g. loess regions around industrialized area). Back trajectory an...
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 金沢大学->北海道大学, Principal investigator, Competitive research funding, 17340163

SOLIDIFICATION AND NATURAL TREATMENT OF ARSENIC SLUDGE PRODUCED FROM
Grants-in-Aid for Scientific Research(基盤研究(A))
2004 - 2006
Hiroshi YOKOTA; 馬場 由成; 田辺 公子; 土手 裕; 大榮 薫; 宮武 宗利; 佐藤 努; 瀬崎 満弘
We have established the design chart of the arsenic removal unit, Gravel Sand Filter (GSF), by examining the arsenic removal performance of 4 GSFs installed in Bangladesh these 4 years. These GSFs are community-based units and have supplied arsenic-safe water to villagers in these years. GSF is composed of gravel tanks and sand tank. The arsenic in groundwater is to be settled in the gravel voids of gravel tanks by co-precipitation with iron, which exits naturally in groundwater with higher concentration.The iron and arsenic in groundwater are first to be oxidized at the inlet tank of GSF. ...
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(A), 宮崎大学, Coinvestigator not use grants, Competitive research funding, 16254003

Analysis and prediction of the dynamics of Polycyclic aromatic hydrocarbons in the coastal environment polluted by heavy oil.
Grants-in-Aid for Scientific Research(基盤研究(B))
2004 - 2006
Takuya KAWANISHI; 林 良茂; 佐藤 努; 鎌田 直人; 田崎 和江; 早川 和一
The concentration of polycyclic aromatic hydrocarbons (PAHs) in the coastal sands and other media of a heavily polluted site of the Nakhodka oil spill were found to be as low as the background after the 7 years of the accident. Oil residues were found only in the hollows and cavities of the rocks, and PAH contents in those residues decreased to one thirds of the original value in two years, but after that, PAHs contents remained at the same level, suggesting that PAHs will remain long as oil residues.Two years of monitoring of PAHs in the river water, SS and sediments revealed that the main...
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 金沢大学, Coinvestigator not use grants, Competitive research funding, 16310006

ベントナイト劣化の機構論的・速度論的研究
受託研究
2002
Competitive research funding

Mechanism and kinetics of bentonite degradation
Funded Research
2002
Competitive research funding

イオン交換反応により炭酸イオンを固定する鉱物の生成機構
科学研究費助成事業
2000 - 2001
佐藤 努
本研究では、海洋地殻の3割を越えるとされる超塩基性岩の変質により生成するマグネシウム炭酸塩、特に炭酸イオンをイオン交換反応により結晶構造内に取り込むことのできるハイドロタルサイト族鉱物の生成機構を明らかにし、地球表層部における炭酸イオン固定や二酸化炭素の循環に及ぼす影響を評価することを目的とした。そのため、昨年度の千葉県、徳島県、愛媛県、オマーンに引き続き、北海道幌満かんらん岩を調査し、地質調査および試料、(水、岩石、土壌)採取を行うとともに、雰囲気制御(二酸化他酸素分圧)鉱物変質実験装置による反応実験を継続した。その結果、超塩基性岩の風化や蛇紋岩化に伴う間隙水の高アルカリ化により、ハイドロタルサィト族鉱物は容易に生成し、溶存炭酸イオンはその生成によって固定化されることが判明した。また、生成時に他の陰イオンを取り込んだハイドロタルサイト族鉱物が形成しても、炭酸イオンに対する高い選択性から、生成後もイオン交換反応によって溶存炭酸イオンを固定可能であることが、雰囲気制御鉱物変質実験装置による実験から明らかとなった。間隙水の高アルカリ化は、亀裂に産するブルース石の風化溶解、または透輝石等の含Ca塩基性鉱物の蛇紋岩化によるCaの溶脱によるもので、Mg・Feかんらん岩の風化、溶脱のみでは高アルカリ化せず、単にMgの溶出と鉄酸化・水酸化物の生成にとどまることも判明した。以上のことから、今後、グローバルな炭素循環を考える場合、海洋底に露出して海洋風化に曝される超塩基性岩の分布やその蛇紋岩化の程度、海洋底下における極低温蛇紋岩化作用の有無、間隙に産するブルース石の含有量などの評価が重要であることが明らかとなった。
日本学術振興会, 奨励研究(A), 金沢大学, 12740298

有害陰イオンを含む廃水や汚染土壌の浄化法とその評価
共同研究
2000
Competitive research funding

有害陰イオンの自然浄化作用
共同研究
2000
Competitive research funding

Remediation of soils and treatment of waste water with hazardous anions
Cooperative Research
2000
Competitive research funding

Natural attenuation of hazardous anion species
Cooperative Research
2000
Competitive research funding

高アルカリ環境の地球化学
共同研究
1992
Competitive research funding

Geochemistry of hyperalkaline
Cooperative Research
1992
Competitive research funding

新規材料、浄化方法、層状複水酸化物の生成方法、複合材及びその製造方法、吸着材、浄化設備並びに汚染水の浄化方法
Patent right, 池田 穂高; 伊藤 健一; 佐藤 努, 株式会社ソフィア
特願2007-316590, 07 Dec. 2007
特開2009-137801, 25 Jun. 2009
200903079998485690

複合材及びその製造方法、吸着材、浄化設備及び汚染水の浄化方法
Patent right, 池田 穂高; 伊藤 健一; 佐藤 努, 株式会社ソフィア
特願2007-316591, 07 Dec. 2007
特開2009-136795, 25 Jun. 2009
200903030403610870

安定性に優れたヒ素収着物質及びそれを用いた汚染水等の浄化方法
Patent right, 佐藤 努; 福士 圭介; 池田 穂高; 伊藤 健一, 有限会社金沢大学ティ・エル・オー
特願2003-169691, 13 Jun. 2003
特開2005-000871, 06 Jan. 2005
特許第3859001号
29 Sep. 2006
200903014834855590

新規化合物、シュベルトマナイトの安定化方法、汚染水若しくは汚染土の浄化方法、リン酸の吸着方法
Patent right, 池田 穂高; 伊藤 健一; 秋田 奈生子; 佐藤 努; 福士 圭介, 株式会社ソフィア
特願2003-395635, 26 Nov. 2003
特開2004-256383, 16 Sep. 2004
特許第3828887号
14 Jul. 2006
200903021580971264

有機−無機複合体および高分子複合材料ならびにその製造方法
Patent right, 田村 堅志; 山田 裕久; 横山 信吾; 佐藤 努, 独立行政法人物質・材料研究機構
JP2005015959, 25 Aug. 2005
WO2006-022431, 02 Mar. 2006
200903011746139737

排水浄化方法及び浄化方法
Patent right, 池田 穂高; 伊藤 健一; 秋田 奈生子; 金川 浩司; 佐藤 努, 株式会社ソフィア
特願2004-002597, 08 Jan. 2004
特開2005-193167, 21 Jul. 2005
200903067830675186

浄化システム
Patent right, 池田 穂高; 伊藤 健一; 福士 圭介; 佐藤 努; 金森 進; 倉本 富男; 成田 和仁, 株式会社ソフィア, 守谷鋼機株式会社
特願2003-405475, 04 Dec. 2003
特開2005-161231, 23 Jun. 2005
200903072617524488

セレン及びクロムの吸着方法
Patent right, 池田 穂高; 伊藤 健一; 秋田 奈生子; 金川 浩司; 佐藤 努; 福士 圭介, 株式会社ソフィア
特願2003-330639, 22 Sep. 2003
特開2005-095732, 14 Apr. 2005
200903057165782388

酸性廃水成分の再資源化方法及び酸性廃水処理システム
Patent right, 佐藤 努; 橋本 晃一; 福士 圭介; 池田 穂高; 伊藤 健一, 有限会社金沢大学ティ・エル・オー
特願2003-169836, 13 Jun. 2003
特開2005-000875, 06 Jan. 2005
200903012362173853

汚染土壌の浄化方法
Patent right, 佐藤 努; 福士 圭介; 木田 幸男; 池田 穂高; 萩原 正人; 荒 美紀子, 東邦レオ株式会社
特願2001-310065, 05 Oct. 2001
特開2003-112163, 15 Apr. 2003
200903053375682003

汚染土壌の浄化方法
Patent right, 佐藤 努; 福士 圭介; 木田 幸男; 池田 穂高; 萩原 正人; 荒 美紀子, 東邦レオ株式会社
特願2001-309944, 05 Oct. 2001
特開2003-112162, 15 Apr. 2003
200903053502053762