Researcher basic information

• Ph.D., Hokkaido University, Mar. 2014

• https://researchmap.jp/ahafuka?lang=en

• https://orcid.org/0000-0003-0115-0302
• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201801008686771104

• 30735353

• https://orcid.org/0000-0003-0115-0302

• P-4550-2018

• 201801008686771104

• Environmental Engineering
• Sanitary Engineering
• Water Treatment
• Water Environment
• water Quality Analysis
• Analytical Chemistry
• Sewage water
• Sludge
• Anaerobic Digestion
• Methane Fermentation
• Membrane Separation
• Adsorption
• Phosphorus
• Eutrophication
• AnMBR
• Biological Biogas Upgrading
• Biomethanation
• Passive Sampling
• Heavy Metal

• Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention), Environmental systems for civil engineering

• Bachelor's degree program, School of Engineering
• Master's degree program, Graduate School of Engineering
• Doctoral (PhD) degree program, Graduate School of Engineering

Research activity information

• Sep. 2025, 日本陸水学会, 2025年度（第18回）最優秀ポスター発表賞
  佐野航士;羽深昭;木村克輝
• Feb. 2025, Graduate School of Engineering, Hokkaido University, 令和6年度大学院工学研究院若手教員奨励賞
  Akira Hafuka
• Jun. 2024, 日本水環境学会, 論文奨励賞（廣瀬賞）
  羽深昭
• Dec. 2023, Committee of Environmental Engineering, Japan Society of Civil Engineers, Best Poster Award, 60th Environmental Engineering Forum
  Jumpei Ueda;Kazuto Sano;Akira Hafuka;Katsuki Kimura
• Sep. 2014, Japan Society on Water Environment, JSWE-ORGANO Doctoral Research Awards
  Hafuka Akira
• Jan. 2014, Committee of Environmental Engineering, Japan Society of Civil Engineers, Best Paper Award for Young Professionals, 50th Environmental Engineering Research
  Hafuka Akira
• Jan. 2013, Bulletin of the Chemical Society of Japan, Selected Paper
  Hafuka Akira

• Long-term operation of a high-rate membrane bioreactor for organic matter recovery from municipal wastewater: Role of iron-associated constituents in fouling and implications for stable performance
  Hitoshi Makizuka; Michael Joseph Rocco; Akira Hafuka; Katsuki Kimura
  Chemical Engineering Journal, 532, 174245, 174245, Elsevier BV, Mar. 2026, [Peer-reviewed]
  Scientific journal
• Efficient and simultaneous recovery of ammonia and carbon from municipal wastewater by the combination of direct membrane filtration (DMF) and the use of a membrane contactor
  Yui Ito; Akira Hafuka; Katsuki Kimura
  Water Research, 286, 124195, Elsevier BV, Nov. 2025, [Peer-reviewed]
  Scientific journal
• In Situ Biogas Upgrading Performance, Microbial Community Structures, and Metabolic Potentials during Biomethanation in a Thermophilic Anaerobic Membrane Bioreactor Treating Sewage Sludge
  Akira Hafuka; Mamoru Oshiki; Sota Fujino; Kohei Takahashi; Satoshi Okabe; Ryusei Ito; Shiho Mizuno; Kazuyuki Oshita; Katsuki Kimura
  ACS ES&T Water, American Chemical Society (ACS), 06 Oct. 2025, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Development of a novel in-sediment passive sampler for profiling orthophosphate and internal phosphorus release near the sediment–water interface in a eutrophic lake
  Kazuto Sano; Jumpei Ueda; Akira Hafuka; Katsuki Kimura
  Water Research, 123634, Elsevier BV, Apr. 2025, [Peer-reviewed], [Corresponding author]
  Scientific journal
• Characterization of biopolymers isolated from a pilot-scale membrane bioreactor treating municipal wastewater
  Takayuki Kakuda; Ayana Suzuki; Rin Naito; Kanta Tominaga; Akira Hafuka; Hiroshi Yamamura; Katsuki Kimura
  International Biodeterioration & Biodegradation, 198, 106010, 106010, Elsevier BV, Feb. 2025, [Peer-reviewed]
  Scientific journal
• Effective reset of fouling in a high-rate MBR by in-situ, air-exposed and chemically enhanced backwash: A cautionary tale for granular scouring use
  Michael J. Rocco; Hitoshi Makizuka; Akira Hafuka; Toru Tsuchiya; Katsuki Kimura
  Journal of Water Process Engineering, 68, 106495, 106495, Elsevier BV, Dec. 2024, [Peer-reviewed]
  Scientific journal
• DEVELOPMENT OF A LOW-CONCENTRATION VERSION OF THE EPISENS-M METHOD SUITABLE FOR TREATED WASTEWATER AND EVALUATION OF VIRUS REMOVAL PERFORMANCE BY MBR
  Izuki NAKASO; Akira HAFUKA; Masaaki KITAJIMA; Katsuki KIMURA
  Japanese Journal of JSCE, 80, 25, 24-25026, Japan Society of Civil Engineers, Nov. 2024, [Peer-reviewed]
  Scientific journal
• High frequency sampling of lake water and sediment and evaluation of phosphorus re- lease from lake sediments in Lake Barato, a shallow oxbow lake
  Jumpei Ueda; Kazuto Sano; Akira Hafuka; Katsuki Kimura
  Japanese Journal of JSCE, 80, 25, 24-25032, Japan Society of Civil Engineers, Nov. 2024, [Peer-reviewed], [Corresponding author]
  Scientific journal
• HYDROTHERMAL PRETREATMENT OF DEWATERD SLUDGE AND BIOGAS PRODUCTION IN AN ANAEROBIC MEMBRANE BIOREACTOR FOR CENTRALIZED DIGESTION
  Takumi NISHIYAMA; Seigo INAGAKI; Akira HAFUKA; Yuji HASHIMOTO; Tsuneo YAMATO; Katsuki KIMURA
  Japanese Journal of JSCE, 80, 25, 24-25004, Japan Society of Civil Engineers, Nov. 2024, [Peer-reviewed], [Corresponding author]
  Scientific journal
• EFFECTS OF STEELMAKING SLAG ADDITION ON THE ANAEROBIC DIGESTION OF SEWAGE SLUDGE
  Haruka KUWABARA; Akira HAFUKA; Katsuki KIMURA
  Japanese Journal of JSCE, 80, 25, 24-25002, Japan Society of Civil Engineers, Nov. 2024, [Peer-reviewed], [Corresponding author]
  Scientific journal
• Synergistic effects of nanobubbles and chemicals on backwashing for submerged MBRs treating municipal wastewater
  Helmano Fernandes; Soichiro Kiuchi; Takayuki Kakuda; Akira Hafuka; Toru Tsuchiya; Yoshihiko Matsui; Katsuki Kimura
  Journal of Water Process Engineering, 63, 105541, 105541, Elsevier BV, Jun. 2024, [Peer-reviewed]
  Scientific journal
• Innovative receiving phase for Chemcatcher® passive sampler for phosphorus in the water environment: Calibration of sampling rate by water temperature and pH
  Akira Hafuka; Yuma Okuda; Kazuto Sano; Jumpei Ueda; Katsuki Kimura
  Water Research, 243, 120412, Elsevier BV, Jul. 2023, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• Fouling mitigation in membrane bioreactors by nanobubble-assisted backwashing
  Helmano Fernandes; Soichiro Kiuchi; Takayuki Kakuda; Akira Hafuka; Toru Tsuchiya; Yoshihiko Matsui; Katsuki Kimura
  Journal of Water Process Engineering, 53, 103860, 103860, Elsevier BV, Jul. 2023, [Peer-reviewed]
  Scientific journal
• Efficient Recovery of Organic Matter from Municipal Wastewater by a High-Rate Membrane Bioreactor Equipped with Flat-Sheet Ceramic Membranes
  Michael Joseph Rocco; Akira Hafuka; Toru Tsuchiya; Katsuki Kimura
  Membranes, 13, 3, 300, 300, {MDPI} {AG}, 03 Mar. 2023, [Peer-reviewed]
  English, Scientific journal, High-rate processes have been investigated for the recovery of organic matter from municipal wastewater. High-rate membrane bioreactors (HR-MBRs) may simultaneously achieve the increased recovery of carbon and high effluent quality, although control of membrane fouling is extremely difficult. To address the severe fouling in HR-MBRs, the combination of granular scouring and frequent chemically enhanced backwashing was examined. The use of robust flat-sheet ceramic membranes enabled the application of those cleaning strategies. Experiments were carried out at an existing wastewater treatment plant. To operate as a high-rate system, the bioreactor solid residence time and hydraulic residence time were set at 0.5 days and 1.6 h, respectively. Although a relatively high flux of 20 L m−2 h−1 was applied, the proposed HR-MBR exhibited a very low fouling rate of 1.3 kPa/day. The system could recover >70% of the carbon from raw wastewater, whereas the concentration of chemical oxygen demand in the effluent was lowered to <20 mg/L. The performance of the proposed HR-MBR observed in this study was clearly superior to those reported in previous related studies.
• Quantitative and qualitative variations of biopolymers in a pilot-scale membrane bioreactor treating municipal wastewater throughout 3 years of operation
  Takayuki Kakuda; Rin Naito; Ayana Suzuki; Akira Hafuka; Katsuki Kimura
  Journal of Environmental Management, 328, 116863, 116863, Elsevier {BV}, Feb. 2023, [Peer-reviewed]
  English, Scientific journal
• EFFICIENT CONTROL OF FOULING IN A HIGH-RATE MEMBRANE BIOREACTOR (HR-MBR) FOR CARBON RECOVERY FROM MUNICIPAL WASTEWATER
  Hitoshi MAKIZUKA; Michael Joseph ROCCO; Akira HAFUKA; Katsuki KIMURA
  Japanese Journal of JSCE, 79, 25, 23-25014, Japan Society of Civil Engineers, 2023, [Peer-reviewed]
  Scientific journal
• Fouling potentials of biopolymers isolated from surface water and supernatants of a membrane bioreactor
  Nonoka MIZUOCHI; Yushiro YAMAMOTO; Junya ONO; Akira HAFUKA; Katsuki KIMURA
  Japanese Journal of JSCE, 79, 25, 23-25007, Japan Society of Civil Engineers, 2023, [Peer-reviewed]
  Scientific journal
• Characterization of Biopolymers in Water Based on their Enzymatic Degradability
  Yushiro YAMAMOTO; Junya ONO; Rina NAGAI; Akira HAFUKA; Katsuki KIMURA
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, III_177, III_184, Japan Society of Civil Engineers, Nov. 2022, [Peer-reviewed]
  Scientific journal
• Optimization of Nanobubble Assisted Backwashing of Membranes
  Hayato NAKAGAWA; Soichiro KIUCHI; Helmano FERNANDES; Akira HAHUKA; Katsuki KIMURA
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, III_143, III_148, Japan Society of Civil Engineers, Nov. 2022, [Peer-reviewed]
  Scientific journal
• EFFECT OF MEMBRANE PORE SIZE AND MATERIALS ON MEMBRANE FOULING IN MBRS
  Takumi NAKAMURA; Takayuki KAKUDA; Akira HAFUKA; Masatsugu ONO; Katsuki KIMURA
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, III_135, III_142, Japan Society of Civil Engineers, Nov. 2022, [Peer-reviewed]
  Scientific journal
• Effect of SRT on digestibility of polysaccharides, proteins, and lipids in waste activated sludge using an anaerobic membrane bioreactor (AnMBR) and analysis of membrane foulant
  Shunsuke KANUMA; Sota FUJINO; Akira HAFUKA; Katsuki KIMURA
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, Ⅲ33, Ⅲ41, Japan Society of Civil Engineers, Nov. 2022, [Peer-reviewed], [Corresponding author]
  Japanese, Effects of SRT and HRT on digestibility of polysaccharides, proteins, and lipids in waste activated sludge were investigated in an anerobic membrane bioreactor (AnMBR). The AnMBR was operated in six different phases. Degradation efficiencies of polysaccharides, proteins, and lipids were increased with prolonged SRT from 30 days to 90 days. Shortening of HRT from 30 days to 15 days lead to increase of organic loading rate, which further increased biogas production rate. Trans-membrane pressure reached to 41 kPa during 154-days continuous membrane filtration of digested sludge. Inorganic irreversible fouling was dominant in the used membrane and Ca, P, and Mg were extracted.
• Passive sampling of low concentration of orthophosphate in a river and a lake
  Kazuto Sano; Yuma Okuda; Akira Hafuka; Katsuki Kimura
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, Ⅲ359, Ⅲ368, Japan Society of Civil Engineers, Nov. 2022, [Peer-reviewed], [Corresponding author]
  Japanese, Scientific journal, Monitoring of orthophosphate (PO_4-P) concentrations in rivers and lakes is important to conserve water environment. Grab sampling followed by general instrumental analysis cannot provide representative concentration of PO_4-P exists in low concentration range in water environment. In this study, passive sampling of orthophosphate was conducted in Sakusyukotoni River and Lake Barato to obtain time-averaged concentration of PO_4-P. As a result, obtained time-averaged concentration of PO_4-P with passive sampling in Sakusyukotoni River coincided with concentrations of dissolved phosphorus in samples obtained by grab sampling. In Lake Barato, vertical profiles of time-averaged concentration of PO_4-P were obtained using passive sampling.
• Intensive routine cleaning for mitigation of fouling in flat-sheet ceramic membranes used for drinking water production: Unique characteristics of resulting foulants
  Hideki Sakamoto; Akira Hafuka; Toru Tsuchiya; Katsuki Kimura
  Separation and Purification Technology, 301, 121950, 121950, Elsevier {BV}, Nov. 2022, [Peer-reviewed]
  English, Scientific journal
• Isolation of LC-OCD-quantified biopolymers from surface water: Significant differences between real biopolymers and model biopolymers
  Kanta Tominaga; Rina Nagai; Akira Hafuka; Wenzheng Yu; Katsuki Kimura
  Journal of Membrane Science, 658, 120714, 120714, Elsevier {BV}, Sep. 2022, [Peer-reviewed]
  English, Scientific journal
• Efficient direct membrane filtration (DMF) of municipal wastewater for carbon recovery: Application of a simple pretreatment and selection of an appropriate membrane pore size
  Toru Sugiyama; Yui Ito; Akira Hafuka; Katsuki Kimura
  Water Research, 118810, 118810, Elsevier {BV}, Aug. 2022, [Peer-reviewed]
  Scientific journal
• In-situ biogas upgrading with H2 addition in an anaerobic membrane bioreactor (AnMBR) digesting waste activated sludge
  Akira Hafuka; Sota Fujino; Katsuki Kimura; Kazuyuki Oshita; Naoya Konakahara; Shigetoshi Takahashi
  Science of The Total Environment, 828, 154573, Elsevier BV, Mar. 2022, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Phosphorus Recovery by Adsorption from the Membrane Permeate of an Anaerobic Membrane Bioreactor Digesting Waste-Activated Sludge
  Akira Hafuka; Katsuki Kimura
  Membranes, 12, 1, 99, Jan. 2022, [Peer-reviewed], [Lead author]
  Scientific journal
• Phosphorus compounds in the dissolved and particulate phases in urban rivers and a downstream eutrophic lake as analyzed using 31P NMR
  Akira Hafuka; Yoichi Tsubokawa; Ryuichiro Shinohara; Katsuki Kimura
  Environmental Pollution, 288, 117732, Nov. 2021, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Direct membrane filtration (DMF) for recovery of organic matter in municipal wastewater using small amounts of chemicals and energy
  Katsuki Kimura; Mutsumi Yamakawa; Akira Hafuka
  CHEMOSPHERE, 277, Aug. 2021, [Peer-reviewed]
  English, Scientific journal
• ASSESMENT OF FOULING POTENTIAL OF BIOPOLYMERS ISOLATED FROM SURFACE WATER USING QUARTZ CRYSTAL MICROBALANCE WITH DISSIPATION MONITORING(QCM-D)
  小野順也; 永井梨奈; 冨永勘太; 羽深昭; 木村克輝
  土木学会論文集 G(環境)(Web), 77, 7, 2021, [Peer-reviewed]
• NUTRIENTS RECOVERY COMBINED WITH DIRECT MEMBRANE FILTRATION (DMF) OF MUNICIPAL WASTEWATER FOR RECOVERY OF ORGANIC MATTER
  伊藤結衣; 杉山徹; 高橋威胤; 羽深昭; 木村克輝
  土木学会論文集 G(環境)(Web), 77, 7, 2021, [Peer-reviewed]
• High-flux operation of MBRs with ceramic flat-sheet membranes made possible by intensive membrane cleaning: Tests with real domestic wastewater under low-temperature conditions
  Yusuke Ninomiya; Katsuki Kimura; Tsubasa Sato; Takayuki Kakuda; Masashi Kaneda; Akira Hafuka; Toru Tsuchiya
  Water Research, 181, 115881, 115881, Elsevier BV, Aug. 2020, [Peer-reviewed]
  English, Scientific journal
• Anaerobic digestibility of up-concentrated organic matter obtained from direct membrane filtration of municipal wastewater
  Akira Hafuka; Taketsugu Takahashi; Katsuki Kimura
  Biochemical Engineering Journal, 161, 107692, Elsevier BV, Jun. 2020, [Peer-reviewed], [Lead author, Corresponding author]
  Scientific journal
• DIRECT MEMBRANE FILTRATION (DMF) OF MUNICIPAL WASTEWATER USING A BIOFILM PROCESS AS A PRE-TREATMENT
  SUGIYAMA Toru; YAMAKAWA Mutsumi; TAKAHASHI Taketsugu; HAFUKA Akira; KIMURA Katsuki
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 76, 7, III_227, III_234, Japan Society of Civil Engineers, 2020
  Japanese, Organic matter in municipal wastewater should be regarded as a resource for energy production in future wastewater management. Concentration of organic matter in municipal wastewater is necessary for application of anaerobic digestion. Direct membrane filtration (DMF) of municipal wastewater using microfiltration can easily concentrate organic matter in municipal wastewater. However, severe membrane fouling and high concentration of organic matter in treated water have been identified as problems to be solved. In this study, a biofilm process using sponge carriers was used as a pre-treatment, aiming for mitigating membrane fouling and reducing concentration of organic matter in the permeate. The pretreatment worked efficiently when water temperature was low: membrane fouling could be mitigated while recovery of organic matter was maintained. However, when water temperature was high, the pre-treatment accelerated membrane fouling in the subsequent membrane process. It was probably due to production of biopolymers in the pre-treatment process. To control the fouling caused by such biopolymers, use of chemical cleaning by oxidants (e.g., NaClO) would be effective. When the water temperature was high, the BOD concentration in the DMF permeate was reduced to 7 mg/L, which is almost same the level as that in conventional activated sludge process.
• TRACKING CHANGES OF SLUDGE COMPONENTS INVOLVED IN SLUDGE FILTERABILITY IN MBR
  NAITO Rin; KAKUDA Takayuki; HAFUKA Akira; KIMURA Katsuki
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 76, 7, III_165, III_171, Japan Society of Civil Engineers, 2020
  Japanese, In this study, changes of sludge components involved in membrane fouling were continuously monitored (>300 days) at a pilot-scale MBR treating real municipal wastewater. It was found that concentrations of colloidal TOC, dissolved lipopolysaccharides (LPS) and biopolymers in the sludge supernatant are strongly correlated with sludge filterability. Size fractions affecting membrane fouling were also investigated, and the results suggested that colloidal matter ranging 0.45-1.0 m, and 5.0-11 µm has significant impact on MBR fouling. Futhermore, isolation of biopolymers from the MBR sludge supernatant was conducted, and their characteristics were compared with sodium alginate which is commonly used as a model biopolymer. Isolated biopolymers caused more severe membrane fouling than did sodium alginate. It was suggested that biopolymers in MBR supernatant have higher fouling potential than that previously estimated by sodium alginate.
• CLEANING OF FOULED MEMBRANES USED FOR MBRS BY USING MICROBUBLLES AND NANOBULLES
  KIUCHI Soichiro; FERNANDES Helmano; HAHUKA Akira; KIMURA Katsuki
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 76, 7, III_149, III_155, Japan Society of Civil Engineers, 2020
  Japanese, Membrane bioreactor (MBR) has some advantages over the activated sludge method, but the membrane fouling that occurs during MBR operation is a big problem. Microbubbles and nanobubbles, which have been reported to have cleaning effects on various types of stains, may be able to efficiently clean fouled membranes. In this study, we conducted a basic study on the membrane cleaning effect of microbubbles and nanobubbles using bench-scale MBR. A large cleaning effect was confirmed in the immersion cleaning using microbubbles. Although nanobubbles did not exhibit a sufficient cleaning effect in the immersion cleaning, it was confirmed that the cleaning effect equal to or higher than that of the backwashing using chemicals was confirmed by mixing the nanobubbles in the backwashing water together with the granular carrier. It was shown that nanobubbles have a small adverse effect on MBR sludge. Membrane cleaning using microbubbles and nanobubbles may be able to solve various problems associated with membrane cleaning using chemicals.
• CHANGES IN GEL LAYER FORMED ON FLAT-SHEET CERAMIC MEMBRANES USED IN AN MBR:IMPACTS OF WATER TEMPERATURE
  佐藤翼; 二宮佑輔; 角田貴之; 羽深昭; 土屋達; 木村克輝
  土木学会論文集 G(環境)(Web), 76, 7, 2020, [Peer-reviewed]
• Application of Graphene Oxide for Adsorption Removal of Geosmin and 2-Methylisoborneol in the Presence of Natural Organic Matter
  Hafuka Akira; Nagasato Takahiro; Yamamura Hiroshi
  INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 16, 11, May 2019, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Digestion performance and contributions of organic and inorganic fouling in an anaerobic membrane bioreactor treating waste activated sludge
  Hafuka, Akira; Mashiko, Riho; Odashima, Ryuto; Yamamura, Hiroshi; Satoh, Hisashi; Watanabe, Yoshimasa
  BIORESOURCE TECHNOLOGY, 272, 63, 69, Jan. 2019, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• 3-[Bis(pyridin-2-ylmethyl)amino]-5-(4-carboxyphenyl)-BODIPY as Ratiometric Fluorescent Sensor for Cu2+
  Hafuka, Akira; Satoh, Hisashi; Yamada, Koji; Takahashi, Masahiro; Okabe, Satoshi
  MATERIALS, 11, 5, May 2018, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Differences in behaviour of three biopolymer constituents in coagulation with polyaluminium chloride: Implications for the optimisation of a coagulation–membrane filtration process
  Qing Ding; Hiroshi Yamamura; Hitoshi Yonekawa; Nobuhiro Aoki; Naoki Murata; Akira Hafuka; Yoshimasa Watanabe
  Water Research, 133, 255, 263, Apr. 2018, [Peer-reviewed]
  Scientific journal
• Development of novel polysulfone membranes with embedded zirconium sulfate-surfactant micelle mesostructure for phosphate recovery from water through membrane filtration
  Kenji Furuya; Akira Hafuka; Miho Kuroiwa; Hisashi Satoh; Yoshimasa Watanabe; Hiroshi Yamamura
  WATER RESEARCH, 124, 521, 526, Nov. 2017, [Peer-reviewed], [Corresponding author]
  English, Scientific journal
• Determination of Cadmium in Brown Rice Samples by Fluorescence Spectroscopy Using a Fluoroionophore after Purification of Cadmium by Anion Exchange Resin
  Akira Hafuka; Akiyoshi Takitani; Hiroko Suzuki; Takuya Iwabuchi; Masahiro Takahashi; Satoshi Okabe; Hisashi Satoh
  SENSORS, 17, 10, Oct. 2017, [Peer-reviewed]
  English, Scientific journal
• Performance of anaerobic membrane bioreactor during digestion and thickening of aerobic membrane bioreactor excess sludge
  Akira Hafuka; Kazuhisa Mimura; Qing Ding; Hiroshi Yamamura; Hisashi Satoh; Yoshimasa Watanabe
  BIORESOURCE TECHNOLOGY, 218, 476, 479, Oct. 2016, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Characteristics of meso-particles formed in coagulation process causing irreversible membrane fouling in the coagulation-microfiltration water treatment
  Q. Ding; H. Yamamura; N. Murata; N. Aoki; H. Yonekawa; A. Hafuka; Y. Watanabe
  WATER RESEARCH, 101, 127, 136, Sep. 2016, [Peer-reviewed]
  English, Scientific journal
• Tracking inorganic foulants irreversibly accumulated on low-pressure membranes for treating surface water
  Hiroshi Yamamura; Katsuki Kimura; Kumiko Higuchi; Yoshimasa Watanabe; Qing Ding; Akira Hafuka
  WATER RESEARCH, 87, 218, 224, Dec. 2015, [Peer-reviewed]
  English, Scientific journal
• Interactions of dissolved humic substances with oppositely charged fluorescent dyes for tracer techniques
  Akira Hafuka; Qing Ding; Hiroshi Yamamura; Koji Yamada; Hisashi Satoh
  WATER RESEARCH, 85, 193, 198, Nov. 2015, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Substituent Effects at the 5-Position of 3-[Bis(pyridine-2-ylmethyl)amino]-BODIPY Cation Sensor Used for Ratiometric Quantification of Cu2+
  Akira Hafuka; Ryosuke Kando; Kohei Ohya; Koji Yamada; Satoshi Okabe; Hisashi Satoh
  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 88, 3, 447, 454, Mar. 2015, [Peer-reviewed], [Lead author, Corresponding author]
  English, Scientific journal
• Application of fluorescence spectroscopy using a novel fluoroionophore for quantification of zinc in urban runoff
  Akira Hafuka; Hiroaki Yoshikawa; Koji Yamada; Tsuyoshi Kato; Masahiro Takahashi; Satoshi Okabe; Hisashi Satoh
  WATER RESEARCH, 54, 12, 20, May 2014, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Determination of Zn²⁺ in industrial wastewater by fluorescence spectroscopy with fluoroionophore
  HAFUKA Akira; YOSHIKAWA Hiroaki; OHYA Kohei; YAMADA Koji; TAKAHASHI Masahiro; OKABE Satoshi; SATOH Hisashi
  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 69, 7, III_275, III_280, 公益社団法人 土木学会, Nov. 2013, [Peer-reviewed], [Lead author]
  Japanese, We applied a novel fluorescent indicator (i.e., fluoroionophore) for industrial wastewater to determine Zn²⁺ by using fluorescence spectroscopy. The fluoroionophore showed red-shifted fluorescence upon Zn²⁺ binding. The indicator exhibited ratiometric fluorescence spectral change with increase of Zn²⁺ concentrations. Zn²⁺ was successfully determined in real industrial wastewater matrix by using the fluoroionophore. In this research, we could demonstrate the potential application of fluorescence spectroscopy with the fluoroionophore to determine heavy metal ions in real wastewater.
• High efficiency removal of phosphate from water by zirconium sulfate-surfactant micelle mesostructure immobilized on polymer matrix
  Pitakteeratham, Niti; Hafuka, Akira; Satoh, Hisashi; Watanabe, Yoshimasa
  WATER RESEARCH, 47, 11, 3583, 3590, Jul. 2013, [Peer-reviewed]
  English, Scientific journal
• BODIPY-Based Ratiometric Fluoroionophores with Bidirectional Spectral Shifts for the Selective Recognition of Heavy Metal Ions
  Akira Hafuka; Hiroki Taniyama; Sang-Hyun Son; Koji Yamada; Masahiro Takahashi; Satoshi Okabe; Hisashi Satoh
  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 86, 1, 37, 44, Jan. 2013, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Effect of feeding regimens on polyhydroxybutyrate production from food wastes by Cupriavidus necator
  Akira Hafuka; Kenji Sakaida; Hisashi Satoh; Masahiro Takahashi; Yoshimasa Watanabe; Satoshi Okabe
  BIORESOURCE TECHNOLOGY, 102, 3, 3551, 3553, Feb. 2011, [Peer-reviewed], [Lead author]
  English, Scientific journal

• パッシブサンプリングによる湖沼底泥間隙水中PO4の濃度・酸素安定同位体比プロファイリング
  佐野航士; 石田卓也; 守屋凜; 羽深昭; 木村克輝, 第60回日本水環境学会年会，講演要旨集p346, Mar. 2026
• 水熱処理と固液分離を組み合わせた脱水汚泥からのエネルギー回収プロセスの開発
  西山拓海; 羽深昭; 橋本悠司; 倭常郎; 木村克輝, 第60回日本水環境学会年会，講演要旨集p42, Mar. 2026
• 構造体を導入した膜分離バブルカラムリアクターによるEx-situバイオガスアップグレーディング
  稲村光亮; 羽深昭; 木村克輝; 鈴木逸人; 川上諒大, 第60回日本水環境学会年会，講演要旨集p678, Mar. 2026
• バイオガススパージング速度と膜弛緩率最適化による嫌気性MBRの高フラックス運転
  高岸汰知; 羽深昭; 安保貴永; 三木和也; 木村克輝, 第60回日本水環境学会年会，講演要旨集p673, Mar. 2026
• 湖沼底泥間隙⽔中リン酸のパッシブサンプリングとリン酸酸素同位体⽐（δ18OPO4）分析
  守屋凜; 佐野航士; 羽深昭; 石田卓也; 木村克輝, 第62回環境工学研究フォーラム，講演集p27, Dec. 2025
• PO4，NH4およびNO3を同時に捕集する新規⽔相パッシブサンプラーの開発
  山口晴香; 羽深昭; 佐野航士; 石田卓也; 木村克輝, 第62回環境工学研究フォーラム，講演集p31, Dec. 2025
• Pioneering δ18OPO4 analysis in lake sediment porewater
  K. Sano; T. Ishida; R. Moriya; A. Hafuka; K. Kimura, IWA 22nd International Conference on Diffuse Pollution & Eutrophication, Nov. 2025, [Peer-reviewed], [Corresponding author]
• Extraction of organic matter from dewatered sewage sludge by thermal hydrolysis for anaerobic digestion
  A. Hafuka; T. Nishiyama; Y. Hashimoto; T. Yamato; K. Kimura, The 19th IWA Conference on Sludge Management, 発表番号2-1-03, Oct. 2025, [Peer-reviewed], [Lead author, Corresponding author]
• 湖沼底泥中PO4の高解像度マッピングと内部リン溶出速度の推定
  佐野航士,羽深昭,木村克輝, 日本陸水学会第89回札幌大会，講演要旨集p146, Sep. 2025
• 湖沼底泥中PO4の酸素同位体比分析におけるパッシブサンプリングの応用
  佐野航士; 石田卓也; 守屋凛; 羽深昭; 木村克輝, 日本陸水学会第89回札幌大会，講演要旨集p39, Sep. 2025
• 湖沼底泥間隙水に含まれるリン酸のパッシブサンプリングとリン酸酸素安定同位体比分析
  羽深昭; 佐野航士; 守屋凛; 石田卓也; 木村克輝, 日本分析化学会第74回年会，講演要旨集B3003, Sep. 2025
• Pretreatment with a Novel Passive Sampler for OxygenIsotope Analysis of Phosphate in Lake Sediment Pore Water
  Kazuto Sano; Takuya Ishida; Rin Moriya; Jumpei Ueda; Akira Hafuka; Katsuki Kimura, 第59回日本水環境学会年会，講演要旨集p414, Mar. 2025
• Fractionation of Phosphorus in Lake Sediments Using In-Sediment Passive Sampler and Sequential Extraction Procedures
  Rin MORIYA; Kazuto SANO; Akira HAFUKA; Katsuki KIMURA, 第59回日本水環境学会年会，講演要旨集p728, Mar. 2025
• Development of an Anaerobic Membrane Bubble Column Reactor for Ex-situ Biogas Upgrading
  Keisuke IKEDA; Akira HAFUKA; Ryusei ITO; Shiho MIZUNO; Kazuyuki OSHITA; Katsuki KIMURA, 第59回日本水環境学会年会，講演要旨集p731, Mar. 2025
• Development of Passive Sampler for Phosphorus and Nitrogen in Water
  Haruka YAMAGUCHI; Jumpei UEDA; Kazuto SANO; Takuya ISHIDA; Akira HAFUKA; Katsuki KIMURA, 第59回日本水環境学会年会，講演要旨集p728, Mar. 2025
• High frequency sampling of lake water and sediment and evaluation of phosphorus re- lease from lake sediments in Lake Barato, a shallow oxbow lake
  Jumpei Ueda; Kazuto Sano; Akira Hafuka; Katsuki Kimura, 第61回環境工学研究フォーラム，土木学会論文集，80 (25), 24-25032, Nov. 2024
  Japan Society of Civil Engineers
• HYDROTHERMAL PRETREATMENT OF DEWATERD SLUDGE AND BIOGAS PRODUCTION IN AN ANAEROBIC MEMBRANE BIOREACTOR FOR CENTRALIZED DIGESTION
  Takumi NISHIYAMA; Seigo INAGAKI; Akira HAFUKA; Yuji HASHIMOTO; Tsuneo YAMATO; Katsuki KIMURA, 第61回環境工学研究フォーラム，土木学会論文集，80 (25), 24-25004, Nov. 2024
  Japan Society of Civil Engineers
• EFFECTS OF STEELMAKING SLAG ADDITION ON THE ANAEROBIC DIGESTION OF SEWAGE SLUDGE
  Haruka KUWABARA; Akira HAFUKA; Katsuki KIMURA, 第61回環境工学研究フォーラム，土木学会論文集，80 (25), 24-25002, Nov. 2024
  Japan Society of Civil Engineers
• Assessment of PO4-P release with a novel passive sampler at the sediment-water interface in a shallow eutrophic lake
  K. Sano; J. Ueda; A. Hafuka, IWA World Water Congress & Exhibition 2024, 発表番号6191060, Aug. 2024, [Peer-reviewed], [Corresponding author]
• Ex-situ biological biogas upgrading with H2 addition in a thermophilic anaerobic membrane bioreactor (AnMBR)
  A. Hafuka; S. Kanuma; K. Oshita; N. Sato; R. Ito; S. Mizuno; K. Kimura, 18th IWA World Conference on Anaerobic Digestion発表番号AD-259, Jun. 2024, [Peer-reviewed], [Lead author, Corresponding author]
• Anaerobic Digestion of Sewage Sludge and Biological Biogas Upgrading in an Anaerobic Membrane Bioreactor
  Akira Hafuka; Shunsuke Kanuma; Katsuki Kimura; Kazuyuki Oshita; Natsuki Sato; Ryusei Ito, 第58回日本水環境学会年会 講演要旨集p237, Mar. 2024
• Evaluation of Internal Phosphorus Release Using Passive Sampling in Lake Barato, Hokkaido
  Kazuto Sano; Jumpei Ueda; Akira Hafuka; Katsuki Kimura, 第58回日本水環境学会年会 講演要旨集p159, Mar. 2024
• Consideration of Hydrothermal Pretreatment Conditions for the Centralized Methane Fermentation of Dewatered Sludge
  Seigo Inagaki; Takumi Nishiyama; Akira Hafuka; Yuji Hashimoto; Tsuneo Yamato; Katsuki Kimura, 第58回日本水環境学会年会 講演要旨集p78, Mar. 2024
• Organic Matter Recovery by Hydrothermal Pretreatment of Dewatered Sludge and Biogas Production with AnMBR
  Takumi Nishiyama; Seigo Inagaki; Akira Hafuka; Yuji Hashimoto; Tsuneo Yamato; Katsuki Kimura, 第58回日本水環境学会年会 講演要旨集p667, Mar. 2024
• 湖沼底泥への埋め込み型パッシブサンプラーを用いた鉛直水平方向のリン酸態リン濃度マッピング
  上田純平; 佐野航士; 羽深昭; 木村克輝, 第60回環境工学研究フォーラム講演集p22, Nov. 2023
• 嫌気性MBRを用いたバイオガスアップグレーディングとH2添加頻度の検討
  第60回環境工学研究フォーラム講演集p20, Nov. 2023
• 湖水中PO4-Pの濃度変動から内部リン溶出速度を推定できるか
  佐野航士; 上田純平; 羽深昭; 木村克輝, 第60回環境工学研究フォーラム講演集p19, Nov. 2023
• 転炉スラグおよび高炉スラグの添加が下水汚泥のメタン発酵に与える影響
  桑原遥香; 鹿沼俊介; 羽深昭; 木村克輝, 第60回環境工学研究フォーラム講演集, p18, Nov. 2023
• Anaerobic digestion of waste activated sludge and in-situ biogas upgrading in a thermophilic anaerobic membrane bioreactor (AnMBR)
  Akira Hafuka; Katsuki Kimura; Kazuyuki Oshita; Natsuki Sato; Ryusei Ito, 第60回下水道研究発表会, 発表者番号E-1-3, Aug. 2023
• In-situ biogas upgrading with H2 addition in a thermophilic anaerobic membrane bioreactor (AnMBR) digesting waste activated sludge
  A. Hafuka; S. Fujino; K. Oshita; N. Sato; R. Ito; K. Kimura, 13th International Congress on Membranes and Membrane Processes (ICOM2023), 発表番号O2.MB-09, Jul. 2023
• リン酸イオンパッシブサンプラーの開発と富栄養化湖沼での内部リン溶出現象の評価
  羽深昭; 佐野航士; 上田純平; 木村克輝, 第83回分析化学討論会, 講演要旨集A2109, May 2023
• 鉄鋼スラグを添加した下水汚泥メタン発酵と炭酸化反応によるバイオガス精製
  桑原遥香; 鹿沼俊介; 羽深昭; 木村克輝, 第57回日本水環境学会年会, 講演要旨集p101, Mar. 2023
• 湖沼底泥での埋め込み型パッシブサンプラーを用いた内部リン溶出速度の推定
  上田純平; 佐野航士; 奥田雄眞; 羽深昭; 木村克輝, 第57回日本水環境学会年会, 講演要旨集p339, Mar. 2023
• 湖水のパッシブサンプリングによる内部リン溶出速度の推定
  佐野航士; 上田純平; 奥田雄眞; 羽深昭; 木村克輝, 第57回日本水環境学会年会, 講演要旨集p340, Mar. 2023
• Development of a passive sampler for phosphate ion and its performance in water environment
  Yuma Okuda; Kazuto Sano; Jumpei Ueda; Akira Hafuka; Katsuki Kimura, 化学系学協会北海道支部2023年冬季研究発表会講演集, 1B11, Jan. 2023
• Effect of SRT on digestibility of polysaccharides, proteins, and lipids in waste activated sludge using an anaerobic membrane bioreactor (AnMBR) and analysis of membrane foulant
  KANUMA Shunsuke; FUJINO Sota; HAFUKA Akira; KIMURA Katsuki, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, Ⅲ33, Ⅲ41, Nov. 2022, [Peer-reviewed], [Corresponding author]
  Effects of SRT and HRT on digestibility of polysaccharides, proteins, and lipids in waste activated sludge were investigated in an anerobic membrane bioreactor (AnMBR). The AnMBR was operated in six different phases. Degradation efficiencies of polysaccharides, proteins, and lipids were increased with prolonged SRT from 30 days to 90 days. Shortening of HRT from 30 days to 15 days lead to increase of organic loading rate, which further increased biogas production rate. Trans-membrane pressure reached to 41 kPa during 154-days continuous membrane filtration of digested sludge. Inorganic irreversible fouling was dominant in the used membrane and Ca, P, and Mg were extracted., Japan Society of Civil Engineers, Japanese
• Passive sampling of low concentration of orthophosphate in a river and a lake
  Sano Kazuto; Okuda Yuma; Hafuka Akira; Kimura Katsuki, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), 78, 7, Ⅲ359, Ⅲ368, Nov. 2022, [Peer-reviewed], [Corresponding author]
  Monitoring of orthophosphate (PO_4-P) concentrations in rivers and lakes is important to conserve water environment. Grab sampling followed by general instrumental analysis cannot provide representative concentration of PO_4-P exists in low concentration range in water environment. In this study, passive sampling of orthophosphate was conducted in Sakusyukotoni River and Lake Barato to obtain time-averaged concentration of PO_4-P. As a result, obtained time-averaged concentration of PO_4-P with passive sampling in Sakusyukotoni River coincided with concentrations of dissolved phosphorus in samples obtained by grab sampling. In Lake Barato, vertical profiles of time-averaged concentration of PO_4-P were obtained using passive sampling., Japan Society of Civil Engineers, Japanese
• リン酸イオンパッシブサンプラーの開発と湖沼・河川環境下での性能評価
  羽深昭; 奥田雄眞; 佐野航士; 木村克輝, 第82回分析化学討論会講演要旨集, D1008, May 2022
• 水素添加型高温嫌気性MBRによる下水汚泥の消化とバイオガスアップグレーディング
  藤野創太; 羽深昭; 木村克輝; 大下和徹; 小中原亨; 髙橋滋敏, 第56回日本水環境学会年会講演集, 310, Mar. 2022
• 下水汚泥の嫌気性MBR処理における糖・タンパク質・脂質の分解性能の評価
  鹿沼俊介; 藤野創太; 羽深昭; 木村克輝, 第56回日本水環境学会年会講演集, 476, Mar. 2022
• 低濃度リンの定量を可能とするChemcatcherパッシブサンプラーの開発
  佐野航士; 奥田雄眞; 羽深昭; 木村克輝, 第56回日本水環境学会年会講演集, 477, Mar. 2022
• バッチ式反応器での異なる水素添加量に対するBiological Biogas Upgradingの応答—第34回環境システム計測制御学会(EICA)研究発表会
  新田 大知; 大下 和徹; 高岡 昌輝; 日下部 武敏; 伊藤 竜生; 佐藤 夏紀; 水野 志穂; 木村 克輝; 羽深 昭, EICA : journal of EICA : 環境システム計測制御学会誌 / 学会誌「EICA」編集委員会 編, 27, 2・3, 119, 124, 2022
  環境システム計測制御学会, Japanese
• 都市下水処理MBRから回収したバイオポリマーの膜ファウリング発生ポテンシャル
  角田貴之; 内藤りん; 鈴木綾菜; 羽深昭; 山村寛; 木村克輝, 膜シンポジウム(CD-ROM), 34, 2022
• バッチ式反応器による水素添加メタン発酵の検討—Hydrogen-supplemented methane fermentation in batch reactor—京都大学環境衛生工学研究会 第43回 シンポジウム講演論文集
  新田 大知; 大下 和徹; 高岡 昌輝; 日下部 武敏; 髙橋 滋敏; 小中原 亨; 水野 志穂; 木村 克輝; 羽深 昭, 環境衛生工学研究 = Environmental & sanitary engineering research : 京都大学環境衛生工学研究会機関誌, 35, 3, 100, 102, Jul. 2021
  京都大学環境衛生工学研究会, Japanese
• 高リン酸イオン選択性を有する新規水相パッシブサンプラーの開発
  奥田雄眞; 羽深昭; 木村克輝; 高津文人, 第55回日本水環境学会年会講演集, 55th, 325, Mar. 2021
• 嫌気性MBRによる下水汚泥のメタン発酵と膜透過水からのリン吸着回収
  稲垣誠吾; 羽深昭; 木村克輝, 第55回日本水環境学会年会講演集, 55th, 305, Mar. 2021
• Fouling Control in Concentration of Municipal Wastewater for Recovery of Organic Matter with Flat-sheet Ceramic Membranes
  高橋威胤; 杉山徹; 伊藤結衣; 羽深昭; 木村克輝, 日本水環境学会年会講演集, 55th, 2021
• Impact of Low Temperature Shock on Changes in MBR Sludge Components and Sludge Filterability
  角田貴之; 内藤りん; 鈴木綾菜; 羽深昭; 木村克輝, 日本水環境学会年会講演集, 55th, 2021
• Isolation and Characterization of Biopolymers in Drinking Water Sources
  冨永勘太; 永井梨奈; 羽深昭; 木村克輝, 日本水環境学会年会講演集, 55th, 2021
• 下水中有機物回収を行う高負荷MBRにおけるファウリング抑制
  佐賀サムエル旗生; ロコ マイケル; 羽深昭; 木村克輝, 下水道研究発表会講演集, 58th, 2021
• 都市下水の直接膜ろ過に組み込み可能な栄養塩回収方法の開発
  伊藤結衣; 杉山徹; 高橋威胤; 羽深昭; 木村克輝, 下水道研究発表会講演集, 58th, 2021
• Hydrogen-supplemented methane fermentation in batch reactor
  新田大知; 大下和徹; 高岡昌輝; 日下部武敏; 高橋滋敏; 小中原亨; 水野志穂; 木村克輝; 羽深昭, 環境衛生工学研究, 35, 3, 2021
• 改良CST測定によるMBRの汚泥馴致期間における膜ファウリング制御
  角田貴之; 内藤りん; 羽深昭; 木村克輝, 下水道研究発表会講演集, 58th, 2021
• 下水の直接膜ろ過により濃縮回収した有機物のメタン発酵特性
  羽深昭; 髙橋威胤; 杉山徹; 山川むつみ; 木村克輝, 第54回日本水環境学会年会講演集, 359, Mar. 2020
• リン吸着剤であるジルコニウムメソ構造体を包含したポリスルフォン膜の開発
  古屋謙治; 羽深昭; 黒岩美帆; 山村寛; 佐藤久; 渡辺義公, 日本膜学会第40年会講演要旨集, 70, May 2018
• 中空糸膜槽外型の嫌気性MBRによる下水汚泥の消化
  益子理保; 羽深昭; 山村寛; 小田嶋龍飛; 佐藤久; 渡辺義公, 日本水環境学会年会講演集, 52nd, 271, 09 Mar. 2018
  Japanese
• 下廃水中からのリン回収に向けたジルコニウム‐メソ構造体包含ポリスルフォン膜の開発
  古屋謙治; 羽深昭; 黒岩美帆; 山村寛; 佐藤久; 渡辺義公, 日本水環境学会年会講演集, 52nd, 60, 09 Mar. 2018
  Japanese
• 電気化学的酸化による溶解性マンガンの除去
  永里貴大; 羽深昭; 山村寛; 渡辺義公, 日本水環境学会年会講演集, 52nd, 35, 09 Mar. 2018
  Japanese
• 嫌気性MBRを用いた下水汚泥のメタン発酵
  羽深昭; 小田嶋龍飛; 益子理保; 山村寛; 佐藤久; 渡辺義公, 下水道研究発表会講演集, 54th, 221‐223, 03 Jul. 2017
  Japanese
• 嫌気性MBRの連続運転による下水汚泥の濃縮と消化
  羽深昭; 小田嶋龍飛; 山村寛; 三村和久; 伊東賢洋; 佐藤久; 渡辺義公, 日本水環境学会年会講演集, 51st, 67, 09 Mar. 2017
  Japanese
• ジルコニウム‐メソ多孔体を包含したリン回収多機能膜の開発
  古屋謙治; 羽深昭; 黒岩美帆; 山村寛; 佐藤久; 渡辺義公, 日本水環境学会年会講演集, 51st, 232, 09 Mar. 2017
  Japanese
• 酸化グラフェンのgeosminおよび2‐MIB吸着特性
  永里貴大; 羽深昭; 山村寛; 渡辺義公, 日本水環境学会年会講演集, 51st, 624, 09 Mar. 2017
  Japanese
• リン吸着能を有するジルコニウム担持分離膜の開発
  古屋謙治; 羽深昭; 黒岩美帆; 佐藤久; 渡辺義公; 山村寛, 環境工学研究フォーラム講演集, 53rd, 15, 06 Dec. 2016
  Japanese
• 嫌気性膜分離法(AnMBR)を用いた余剰汚泥の消化と濃縮に関する研究
  小田嶋龍飛; 羽深昭; 佐藤久; 渡辺義公; 山村寛, 環境工学研究フォーラム講演集, 53rd, 18, 06 Dec. 2016
  Japanese
• 酸化グラフェンを用いたカビ臭原因物質の吸着除去
  羽深昭; 永里貴大; 渡辺義公; 山村寛, 環境工学研究フォーラム講演集, 53rd, 25, 06 Dec. 2016
  Japanese
• 嫌気性膜分離(AnMBR)を用いたMBR余剰汚泥の消化に関する研究
  羽深昭; 山村寛; 佐藤久; 渡辺義公, 下水道研究発表会講演集, 53rd, 1130‐1132, 1132, 01 Jul. 2016
  日本下水道協会, Japanese
• 嫌気性MBRを用いたMBR余剰汚泥の消化
  羽深昭; 山村寛; 三村和久; 佐藤久; 渡辺義公, 日本水環境学会年会講演集, 50th, 181, 10 Mar. 2016
  Japanese
• 嫌気性MBRを用いたbMBR余剰汚泥からのリン溶出に関する研究
  LU Tao; 羽深昭; 山村寛; 渡辺義公; 佐藤久, 下水道研究発表会講演集, 52nd, 197, 199, 01 Jul. 2015
  日本下水道協会, Japanese
• 変色型ボロンジピロメテン蛍光色素を用いた路面排水中Zn²⁺濃度の定量
  羽深昭; 吉川弘晃; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 分析化学討論会講演要旨集, 73rd, 149, 04 May 2013
  Japanese
• 網羅的重金属イオン分析に向けた新規変色型蛍光色素の開発
  吉川弘晃; 羽深昭; 菅藤亮輔; 大屋光平; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 47th, 431, 11 Mar. 2013
  Japanese
• 新規変色型蛍光色素を用いた路面排水中亜鉛濃度の定量
  菅藤亮輔; 羽深昭; 吉川弘晃; 大屋光平; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 47th, 432, 11 Mar. 2013
  Japanese
• 重金属測定用蛍光色素の理論的分子設計による高感度化
  大屋光平; 羽深昭; 菅藤亮輔; 吉川弘晃; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 47th, 692, 11 Mar. 2013
  Japanese
• 新規蛍光分子プローブを用いた環境水中重金属イオン分析
  菅藤亮輔; 羽深昭; 吉川弘晃; 大屋光平; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 環境工学研究フォーラム講演集, 49th, 31, 33, 28 Nov. 2012
  Japanese
• 新規変色型蛍光色素を用いた路面排水中亜鉛濃度の定量
  吉川弘晃; 菅藤亮輔; 羽深昭; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本分析化学会年会講演要旨集, 61st, 315, 05 Sep. 2012
  Japanese
• 重金属センサアレイに向けた変色型ボロンジピロメテン蛍光色素群の開発
  菅藤亮輔; 吉川弘晃; 谷山拓生; 羽深昭; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 分析化学討論会講演要旨集, 72nd, 130, 05 May 2012
  Japanese
• 新規変色型蛍光色素を用いた環境サンプル中の重金属イオン分析
  谷山拓生; 羽深昭; 菅藤亮輔; 吉川弘晃; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 46th, 506, 14 Mar. 2012
  Japanese
• 新規変色型蛍光色素を用いたクロムイオン分析
  吉川弘晃; 羽深昭; 谷山拓生; 菅藤亮輔; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 46th, 676, 14 Mar. 2012
  Japanese
• 新規変色型蛍光色素を用いた亜鉛イオン分析
  羽深昭; 谷山拓生; 菅藤亮輔; 吉川弘晃; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 46th, 622, 14 Mar. 2012
  Japanese
• 変色型ボロンジピロメテン蛍光色素を用いた重金属イオン分析
  菅藤亮輔; 吉川弘晃; 谷山拓生; 羽深昭; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 化学系学協会北海道支部冬季研究発表会講演要旨集, 2012, 101, 31 Jan. 2012
  Japanese
• 新規蛍光色素を用いた重金属イオン分析
  羽深昭; 谷山拓生; 菅藤亮輔; 吉川弘晃; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 環境工学研究フォーラム講演集, 48th, 214, 216, 25 Nov. 2011
  Japanese
• 重金属イオン分析に向けた新規蛍光色素の開発
  菅藤亮輔; 羽深昭; 谷山拓生; 吉川弘晃; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 環境工学研究フォーラム講演集, 48th, 220, 222, 25 Nov. 2011
  Japanese
• オンサイト重金属イオン分析に向けた新規変色型蛍光色素の開発
  谷山拓生; 羽深昭; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 土木学会年次学術講演会講演概要集(CD-ROM), 66th, ROMBUNNO.VII-192, 05 Aug. 2011
  Japanese
• 新規変色型蛍光色素を用いた水サンプル中重金属イオンの簡易分析
  羽深昭; 谷山拓生; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 土木学会年次学術講演会講演概要集(CD-ROM), 66th, ROMBUNNO.VII-191, 05 Aug. 2011
  Japanese
• 重金属イオンの識別が可能な変色型ボロンジピロメテン蛍光色素の開発
  谷山拓生; 菅藤亮輔; 羽深昭; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本化学会北海道支部夏季研究発表会講演要旨集, 2011, 150, 01 Jul. 2011
  Japanese
• 変色型ボロンジピロメテン蛍光色素を用いた含水サンプル中での重金属イオンの簡易分析
  菅藤亮輔; 谷山拓生; 羽深昭; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本化学会北海道支部夏季研究発表会講演要旨集, 2011, 149, 01 Jul. 2011
  Japanese
• オンサイト重金属イオン分析に向けた新規変色型蛍光色素の開発
  谷山拓生; 羽深昭; 菅藤亮輔; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 45th, 293, 18 Mar. 2011
  Japanese
• 新規変色型蛍光色素を用いた水サンプル中の重金属検出
  菅藤亮輔; 羽深昭; 谷山拓生; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 45th, 295, 18 Mar. 2011
  Japanese
• 新規変色型蛍光色素を用いたレシオメトリー測定による重金属イオン分析
  羽深昭; 谷山拓生; 菅藤亮輔; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 日本水環境学会年会講演集, 45th, 294, 18 Mar. 2011
  Japanese
• 蛍光色素を用いたレシオメトリー測定による重金属イオン分析
  羽深昭; 谷山拓生; 山田幸司; 高橋正宏; 岡部聡; 佐藤久, 環境工学研究フォーラム講演集, 47th, 184, 186, 12 Nov. 2010
  Japanese
• 有機性廃棄物からのポリヒドロキシアルカン酸の生産
  羽深昭; 佐藤久; 高橋正宏; 岡部聡, 日本水環境学会シンポジウム講演集, 12th, 168, 169, 14 Sep. 2009
  Japanese
• 有機性廃棄物からのポリヒドロキシアルカン酸の生産
  羽深昭; 佐藤久; 高橋正宏; 岡部聡, 日本水環境学会年会講演集, 43rd, 623, 16 Mar. 2009
  Japanese
• 有機性廃棄物からのポリヒドロキシアルカン酸の生産
  羽深昭; 坂井田健司; 佐藤久; 深澤達矢; 高橋正宏; 岡部聡, 環境工学研究フォーラム講演集, 45th, 61, 63, 28 Nov. 2008
  Japanese

• Application of membrane technologies in anaerobic digestion
  Akira Hafuka
  Special Symposium (KMUTT-NUT-BIOTEC): Advances in Biotechnology and Environmental Engineering for Sustainable Societies, 12 Jan. 2026
• リン酸パッシブサンプラーの開発と湖沼底泥からのリン溶出速度の推定
  羽深昭
  水・大気環境連携セミナー2025－データで切り拓く環境研究の未来－, 19 Dec. 2025
  [Invited]
• Phosphorus release from lake sediment in a eutrophic lake
  A. Hafuka
  The 11th Hokkaido University Cross-Departmental Symposium, 02 Oct. 2025
  [Invited]
• Biomethane Production from Sewage Sludge via Anaerobic digestion and Biological Biogas Upgrading
  Akira Hafuka
  The 1st Joint Forum of Hokkaido University and University of Seoul 「Toward Net-Zero：Green and Digital Technology for Futures based on Sustainable Education」, 08 Aug. 2025, Nominated symposium
• Anaerobic digestion of sewage sludge and biological biogas upgrading to achieve carbon neutrality
  Akira Hafuka
  The 2025 Joint Conference of KSWW and KSWE, 21 Mar. 2025
  [Invited]
• 新規水相パッシブサンプラーを用いた底泥リン溶出速度推定法の開発
  羽深昭
  環境研究総合推進費令和6年度若手研究者による研究成果発表会, 29 Nov. 2024, Public discourse
  [Invited]
• 嫌気MBR研究の最新動向
  羽深昭
  第39回ニューメンブレンテクノロジーシンポジウム2024, 21 Nov. 2024
  [Invited]

• 水環境施設工学特論, 2024年, 修士課程, 工学院
• 水環境施設工学特論, 2024年, 博士後期課程, 工学院
• 環境工学実験Ⅱ, 2024年, 学士課程, 工学部
• 流体工学演習, 2024年, 学士課程, 工学部

• International Water Association
• THE JAPAN SOCIETY FOR ANALYTICAL CHEMISTRY
• JAPAN SOCIETY OF CIVIL ENGINEERS
• JAPAN SOCIETY ON WATER ENVIRONMENT

• 湖沼底泥から溶出するリンのインパクト：新規サンプリング法と安定同位体比による評価
  科学研究費助成事業
  Apr. 2026 - Mar. 2029
  羽深 昭,石田 卓也
  日本学術振興会, 基盤研究(B), 北海道大学, 26K01070
• 微細3次元構造体担体および膜分離を導入したバブルカラムリアクターによるEx-situバイオガスアップグレーディング
  2025（R7）年度下水道新技術研究助成事業
  Apr. 2025 - Mar. 2027
  羽深昭
  公益財団法人日本下水道新技術機構, 北海道大学大学院工学研究院, Principal investigator
• パッシブサンプリングとリン酸酸素安定同位体比分析による湖沼底泥からのリン溶出評価
  2025年度環境研究助成（一般研究）
  Nov. 2025 - Nov. 2026
  公益財団法人住友財団, Principal investigator
• 嫌気性MBRを用いた下水汚泥メタン発酵とハイブリッド型バイオメタネーション
  科学研究費助成事業
  01 Apr. 2023 - 31 Mar. 2026
  羽深 昭
  日本学術振興会, 基盤研究(C), 北海道大学, 23K04084
• 新規パッシブサンプリング法による茨戸川底泥からのリン溶出評価
  第39回（令和6年度）研究助成
  Apr. 2025 - Mar. 2026
  公益財団法人寿原記念財団, Principal investigator
• 進化型MBRによる下水からの有機物回収：下水道の創エネルギーインフラへの転換
  科学研究費助成事業
  05 Apr. 2021 - 31 Mar. 2025
  木村 克輝; 西村 紳一郎; 羽深 昭
  ベンチスケールのMBR実験システムを構築し、実下水処理場に実験装置を設置して連続ろ過実験を繰り返し実施した。本研究で提案・確立を行うエネルギー回収型MBRでは深刻な膜ファウリングの発生が確実に起こるため、これに対処するための担体を用いた機械的洗浄と薬品併用逆洗（CEB）を実施しながら連続ろ過運転を行った。HRT、SRT、DOを様々に変化させて実験を行い、有機物回収率、膜ファウリング発生度、処理水水質のそれぞれが高いレベルで調和するような運転条件の探索を試みた。HRTを極短の1.5-2時間、SRTも極短の0.5日とすることで、有機物回収率（初沈流入水に対して）は70％を超過する結果が得られた。実下水を用いた実験であったことからDOを一定範囲に制御することが難しく、MBR内のDO濃度は大きく変動した（1-7 mg/L）。処理水中のCOD濃度は20 mg/L程度となり、高い有機物回収率と処理水中の有機物濃度低減を同時に達成可能であることを実証した。膜ファウリングの発生については、CEBに用いる次亜塩素酸の濃度が洗浄効果に大きな影響を及ぼすことを観察した。本年度の研究では50-1000 ppmの範囲でCEBに用いる次亜塩素酸の濃度を変化させたが、最も安定したMBRの運転が可能になったのは次亜塩素酸の濃度を50 ppmに設定した時であった。過度に高い薬品濃度は微生物からの有機物放出を誘引し、MBR内の汚泥ろ過性を低下させるものと考えられた。CEBに用いる次亜塩素酸濃度を50 ppm とし、正味の膜透過水フラックスを20 LMHに設定した実験では５日間程度はほとんど膜ファウリングが発生しない状況を繰り返し観察した。
  日本学術振興会, 基盤研究(A), 北海道大学, 21H04569
• パッシブサンプリングを活用した湖沼底泥からのリン溶出評価～大都市近郊の浅い富栄養化湖沼を対象として～
  2023年度研究助成
  Apr. 2024 - Mar. 2025
  羽深昭
  公益財団法人大林財団, 北海道大学大学院工学研究院, Principal investigator
• 新規水相パッシブサンプラーを用いた底泥リン溶出速度推定法の開発
  環境研究総合推進費 革新型研究開発（若手枠）
  Apr. 2021 - Mar. 2024
  羽深昭、篠原隆一郎
  環境再生保全機構, 北海道大学, Principal investigator
• 鉄鋼スラグ添加と膜分離による下水汚泥メタン発酵の高度化
  第43回（2022年度）環境助成研究（若手研究助成）
  Nov. 2022 - Oct. 2023
  羽深昭
  公益財団法人鉄鋼環境基金, 北海道大学大学院工学研究科, Principal investigator
• 結氷した茨⼾川における異なる⽔深での時間平均リン濃度の算出
  令和4年度河川基金助成事業 一般研究者（一般的助成）
  Apr. 2022 - Mar. 2023
  羽深昭
  公益財団法人河川財団, 北海道大学, Principal investigator
• 鉄鋼スラグ有効活用による下水汚泥メタン発酵の高効率化
  2021年度研究助成
  Nov. 2021 - Mar. 2023
  羽深昭
  フソウ技術開発振興基金, 北海道大学, Principal investigator
• 膜分離の導入による下水汚泥のメタン発酵高度化に関する研究
  令和3年度研究助成
  Apr. 2021 - Mar. 2022
  羽深昭
  前田記念工学振興財団, 北海道大学, Principal investigator
• 下水汚泥のメタン発酵に膜ろ過を導入するとメタン生成能は向上するのか？
  令和3年度研究助成
  Apr. 2021 - Mar. 2022
  羽深昭
  向科学技術振興財団, 北海道大学, Principal investigator
• 嫌気性膜分離法による下水汚泥のメタン発酵と高リン選択性吸着剤を用いた処理水からのリン回収
  2020年度北海道ガス大学研究支援制度
  Apr. 2020 - Mar. 2021
  羽深昭
  北海道ガス株式会社, 北海道大学, Principal investigator
• 高リン選択性パッシブサンプラーの開発と茨戸川の時間平均 リン濃度推定
  2020年度河川基金助成事業 若手研究者（一般的助成）
  Apr. 2020 - Mar. 2021
  羽深 昭
  公益財団法人河川財団, 北海道大学, Principal investigator
• 蛍光プローブを用いた簡易・迅速・低コストのオンサイト指標細菌一斉計測技術の開発
  科学研究費基金 挑戦的研究(萌芽)
  Jun. 2019 - Mar. 2021
  佐藤 久
  日本学術振興会, Competitive research funding
• リン吸着膜を活用した下水汚泥からリン回収およびバイオガス生成プロセスの構築
  科学研究費基金 若手研究
  Apr. 2018 - Mar. 2021
  羽深 昭
  日本学術振興会, Principal investigator, Competitive research funding
• IoT技術の基盤となるDNAアプタマーを用いた網羅的水質センサの開発
  科学研究費補助金 基盤研究(B)
  Apr. 2017 - Mar. 2020
  佐藤 久
  日本学術振興会, Competitive research funding
• 分離膜を用いた都市下水を原料とする高タンパク質・油脂含有微細藻類生産システム
  科学研究費補助金 基盤研究(B)
  Apr. 2016 - Mar. 2019
  渡辺 義公
  日本学術振興会, Competitive research funding
• 下廃水からのリン除去回収に向けたジルコニウム担持分離膜の開発
  科学研究費基金 若手研究(B)
  Apr. 2016 - Mar. 2018
  羽深 昭
  日本学術振興会, Principal investigator, Competitive research funding
• 水環境中ヒ素の簡易定量に向けた新規蛍光プローブの開発
  科学研究費補助金 研究活動スタート支援
  Aug. 2014 - Mar. 2016
  羽深 昭
  日本学術振興会, Principal investigator, Competitive research funding
• 省エネ・多機能型の膜分離導入下廃水処理システムの実用化
  科学研究費補助金 基盤研究(A)
  Apr. 2013 - Mar. 2016
  渡辺 義公
  日本学術振興会, Competitive research funding
• 新規蛍光分子と重金属イオンアレイセンサーの開発
  科学研究費補助金 特別研究員奨励費
  Apr. 2012 - Mar. 2014
  羽深 昭
  本研究の目的は, 重金属イオンと特異的に結合し, 蛍光スペクトルが変化する蛍光分子を複数合成するまた, それらを基板固定したアレイセンサーを開発することである.
  本年度は新規蛍光分子を2種類合成することに成功した. また, これらの新規蛍光分子の特性(イオン選択性, 蛍光強度, 蛍光波長)を明らかにした. 開発した蛍光分子に親水性の置換基を導入したため, これまで問題となっていた水溶性の低さを改善できた. また, 無機材料への修飾部位も導入できたため, 今後のセンサー化の基盤となる蛍光分子を開発できた.
  これまでに開発した蛍光分子のうちの一つを用い, 工場廃水中に含まれる亜鉛イオンの定量を試みた. 廃水中には様々なイオンが共存しているが, 公定法であるICP-AES分析法で金属成分を定量した結果, 蛍光分子による定量値とICP-AESによる測定結果と良い相関がみられた. すなわち, 開発した蛍光分子により工場廃水中の亜鉛イオンを簡易に定量可能であることが明らかとなった.
  国内では2013年5月に第73回分析化学討論会にてポスター発表、2013年9月に2013年光化学討論会にてポスター発表、2013年11月に第50回環境工学研究フォーラムにて口頭発表、2014年3月に第48回日本水環境学会年会にて口頭発表、以上4件の発表を行った。また、2013年9月には国際学会であるica2013にてポスター発表を行った. これまでの研究に関する論文が2013年11月に土木学会論文集G(環境)および2014年1月にWater Research誌に掲載された.
  日本学術振興会, 特別研究員奨励費, 北海道大学, Principal investigator, Competitive research funding, 12J01817

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