Researcher Profile and Settings

Affiliation

• Research Faculty of Agriculture　Fundamental AgriScience Research　Bioresource and Environmental Engineering

Job Title

• Assistant Professor

Degree

• Ph. D（Hokkaido University）

URL

https://abse.bpe.agr.hokudai.ac.jp

Research funding number

• 40975405

ORCID ID

•  https://orcid.org/0000-0003-0576-3720

Researcher ID

• C-5565-2015

J-Global ID

• 202201010990849150

Research Interests

• Torrefaction   Carbonization   Composting   Biochar   Manure management   Organic waste   Biomass   

Research Areas

• Environmental science/Agricultural science / Agricultural environmental and information engineering

Academic & Professional Experience

• 2022/10 - Today Hokkaido University Research Faculty of Agriculture Assistant Professor
• 2019/04 - 2022/09 Tanigurogumi Corporation
• 2018/10 - 2019/03 Japan Society for the Promotion of Science

Education

• 2013/04 - 2018/09  Hokkaido University  Graduate School of Agriculture  Division of Enironmetal Resource
• 2009/04 - 2013/03  Hokkaido University  School of Agriculture  Department of Agricultural Engineering

Association Memberships

• 農業施設学会   American Society of Agricultural and Biological Engineers (ASABE)   Japan Society of Material Cycles and Waste Management   The Japanese Society of Agricultural Machinery and Food Engineers   

Research Activities

Published Papers

• Livestock Manure Compost Mixed with Biochar: Efficient Pelleting and Pellet Production Characteristics

  Kenichi Furuhashi, Kosuke Ueda, Taiyo Hatagami, Takanori Itoh, Takaya Miyazaki, Yutaka Kaizu, Kenji Imou

  Waste and Biomass Valorization 1877-2641 2024/04/13 [Refereed][Not invited]
   

  Abstract Biochar is difficult to make pellets on its own. The pelleting of biochar mixed with livestock manure compost could have the following advantages: (1) use compost as a binder, (2) reduce the moisture content of compost for pelleting by simply mixing without drying, and (3) promote the application of biochar for carbon sequestration by simultaneous application with agricultural machinery for chemical fertilizers while preventing dust pollution and additional work for the farmer. Fertilizer pellets need to be produced in an economical manner. Therefore, we empirically examined the productivity of pelleting using a roller die pellet mill, which is characterized by high throughput and is commonly used in the mass production of multifertilizer and wood pellets. Although a feedstock with 25% biochar mixed with cattle manure compost produced fewer pellets than a feedstock consisting of only compost, the energy input per unit of production remained the same. The results suggest that the addition of biochar may not increase GHG emissions during the production of this new material. Durability and wettability showed similar or higher values in the mixed pellets, indicating that the new material can be used as a fertilizer in the same way as cattle manure pellets.
• Low-temperature biochars are more effective in reducing ammonia emissions through various mechanisms during manure composting

  Yunsik Shin, Kazunori Iwabuchi, Takanori Itoh

  Journal of Material Cycles and Waste Management 26 (1) 138 - 148 1438-4957 2023/10/09 [Refereed][Not invited]
  
• Meat and bone meal biochar can effectively reduce chemical fertilizer requirements for crop production and impart competitive advantages to soil

  Mahmudul Islam Piash, Koki Uemura, Takanori Itoh, Kazunori Iwabuchi

  Journal of Environmental Management 336 117612 - 117612 0301-4797 2023/06 [Refereed][Not invited]
  
• Heat balance analysis for self-heating torrefaction of dairy manure using a mathematical model

  Takanori Itoh, Teppei Ogawa, Kazunori Iwabuchi, Katsumori Taniguro

  Waste Management 162 1 - 7 0956-053X 2023/05 [Refereed][Not invited]
  
• Effects of Ash Composition and Combustion Temperature on Reduced Particulate Matter Emission by Biomass Carbonization

  Davaajav Dalkhsuren, Kazunori Iwabuchi, Takanori Itoh, Takumi Narita, Mahmudul Islam Piash, Baatarbileg Nachin, Gerelbaatar Sukhbaatar

  BioEnergy Research 16 (3) 1629 - 1638 1939-1234 2022/10/22 [Refereed][Not invited]
  
• Improvement of the fuel properties of dairy manure by increasing the biomass-to-water ratio in hydrothermal carbonization

  Mohammed Aliyu, Kazunori Iwabuchi, Takanori Itoh

  PLOS ONE 17 (7) e0269935 - e0269935 1932-6203 2022/07/18 [Refereed][Not invited]
  
• Synthesizing biochar-based fertilizer with sustained phosphorus and potassium release: Co-pyrolysis of nutrient-rich chicken manure and Ca-bentonite

  Mahmudul Islam Piash, Kazunori Iwabuchi, Takanori Itoh

  Science of The Total Environment 822 153509 - 153509 0048-9697 2022/05 [Refereed][Not invited]
   

  Biochar-based fertilizers (BBFs) are attracting considerable interest due to their potential to improve soil properties and the nutrient use efficiency of plants. However, a sustainable agricultural system requires decreased dependency on chemical fertilizer for BBF production and further enhancement of the slow-release performance of BBFs. In this study, we propose a simple biochar-based slow-release fertilizer synthesis technique involving the co-pyrolysis of 10 to 25% (w/w) Ca-bentonite with chicken manure as the only nutrient source (N, P, K). To evaluate nutrient release in contrasting soil media, we mixed pristine and modified chicken manure biochars (CMB) with both quartz sand and clay loam soil and compared the release with that of the recommended fertilizer dose for sweet corn (Zea mays convar. saccharata). Fourier transform infrared spectroscopy and energy-dispersive X-ray spectroscopy revealed that Ca-bentonite reduced readily soluble orthophosphates by forming less-soluble Ca/Mg-phosphates. In addition, significantly slower K release in soil (on average similar to 22% slower than pristine CMB) was observed from biochar containing 25% Ca-bentonite, since K is strongly adsorbed in the exchange sites of crystalline bentonite during co-pyrolysis. Decomposable amides were unaltered and thus Ca-bentonite had no significant impact on N release. Comparison of nutrient release in different media indicated that on average P and K release from BBFs in coarse sand respectively was 38% and 24% higher than in clay loam, whereas N release was substantially greater (49%) in the latter, owing to significant microbial decomposition. Overall, Ca-bentonite-incorporated CMBs, without any additional fertilizer, can satisfy plant nutritional needs, and exhibit promising slow-release (P and K) performance. Further process modification is required to improve N-use efficiency after carefully considering the soil components.
• Upgrading the fuel properties of hydrochar by co-hydrothermal carbonisation of dairy manure and Japanese larch (Larix kaempferi): product characterisation, thermal behaviour, kinetics and thermodynamic properties

  Mohammed Aliyu, Kazunori Iwabuchi, Takanori Itoh

  Biomass Conversion and Biorefinery 13 (13) 11917 - 11932 2190-6815 2021/10/28 

  Abstract This study investigated co-hydrothermal carbonisation (co-HTC) of dairy manure (DM) and wood shavings from Larix kaempferi, commonly known as the Japanese larch (JL) to enhance the fuel properties of the resulting hydrochar. The JL was mixed with the DM at 25, 50 and 75 wt.% ratios. Co-HTC was conducted at 260 °C for 20 min. The resulting hydrochars were characterised based on the physicochemical properties and the thermal behaviour. Results showed that the hydrochar solid biofuel properties improved as the ratio of JL was increased. The produced hydrochars were in the region of lignite and closed to the region of the coal with increased fixed carbon, carbon contents and lowered H/C and O/C ratios. Hydrochar with ash content of 7.2 ± 0.5% was obtained at 75 wt.% JL. In addition, the HHV of hydrochar increased remarkably to 26.4 ± 0.02 MJ/kg as the mass ratio of the JL was increased. The surface morphology of the hydrochars were altered and became distinct while the specific surface area (SSA) and the total pore volume (TPV) of the hydrochars increased at increasing the mass ratio of the JL. The surface functional groups were also altered by the co-HTC process. A decline in the combustion performance was observed after the HTC process but improved at 75 wt.% JL after the co-HTC process. The kinetic analysis also revealed that the activation energy decreased after the HTC process but increased to a higher value at 50 wt.% JL after the co-HTC process. Therefore, hydrochar production by co-HTC of DM and JL has proved to be an effective and promising solid biofuel source. Graphical abstract
• Release of essential plant nutrients from manure- and wood-based biochars

  Mahmudul Islam Piash, Kazunori Iwabuchi, Takanori Itoh, Koki Uemura

  Geoderma 397 115100 - 115100 0016-7061 2021/09 [Refereed][Not invited]
   

  Several biochars have a considerable amount of essential plant nutrients; however, the release of those nutrients in soil is not well understood. Therefore, in this study, six biochars with varying nutrient contents were produced from Japanese larch (Larix kaempferi, JL), dairy manure (DM), and chicken manure (CM) at 300 and 500 degrees C and incubated in a temperate clay loam soil to investigate their nutrient release dynamics. The available N, P, and K release patterns of the biochars (2% dry-basis) were compared with the recommended fertilizer dose of sweet corn (Zea mays convar. saccharata) for 120 days. The results indicated that only chicken manure biochars (C/N ratio < 8) have the potential to satisfy plant needs by releasing sufficient N, P, and K. Fourier-transform infrared analysis revealed that N-containing amide dissolution was the major mechanism behind the 49% N release from the CM300 biochar. A higher production temperature (500 degrees C) diminished most of these amides, resulting in lower N release from CM500 (8.9%). Nitrification-induced reduction of soil pH caused Ca/Mg-P dissolution from manure biochars and enhanced P release. Much of the released phosphates later became unavailable in the soil by aluminosilicate complex formation. DM biochar also released adequate P and K, and production at 500 degrees C generally performed better than at 300 degrees C. Effect of coexisting ions on some nutrient release was found, though was statistically nonsignificant. Overall, results revealed that low-temperature (<= 500 degrees C) CM and DM biochars can become comprehensive or complementary sources of plant nutrients, respectively, with some enhanced nutrient-retaining potential, although inherent soil properties may play a significant role.
• Effects of Different Feedstock Type and Carbonization Temperature of Biochar on Oat Growth and Nitrogen Uptake in Coapplication with Compost

  Shoki Ochiai, Kazunori Iwabuchi, Takanori Itoh, Toshihiro Watanabe, Mitsuru Osaki, Katsumori Taniguro

  Journal of Soil Science and Plant Nutrition 21 (1) 276 - 285 0718-9508 2021/03 [Refereed][Not invited]
   

  We aimed to verify whether (i) biochar-compost application improves plant growth when compared with compost application alone and (ii) a diversity of biochar caused by feedstock type and carbonization temperature affects the extent of plant growth. We prepared six types of biochar from larch (Larix kaempferiSarg.) and dairy manure at 300 degrees C, 450 degrees C, and 600 degrees C for 1 h. Compost was applied as control, and each biochar was co-applied with compost to oat plants (Avena sativaL.). The total nitrogen input of all the seven treatments was adjusted to the same level to assess their effects on plant nitrogen uptake and nitrogen content. Compared with the control, biomass production increased from 13.1 to 34.0% with the wood biochar application and from 39.7 to 64.2% with manure biochar application because of more mineralization of compost and nitrogen fixation through rhizobacteria and/or diazotrophic endophytes. The diversity of biochar caused a difference in the extent of oat growth, and feedstock type of biochar was a more dominant factor than carbonization temperature. Due to the favorable chemical properties of manure biochar like high pH and more labile-C and -N content, the manure biochar application increased average biomass production by 26.0% compared with the wood biochar application. The carbonization temperature had no significant impact on oat growth, but the optimal temperature was indicated as approximately 450 degrees C. Biochar diversity causes a difference in plant growth in biochar-compost application, and the selection of appropriate biochar, such as manure biochar at 450 degrees C, would be a guideline for achieving a robust crop production system.
• Effects of pyrolysis temperature and feedstock type on particulate matter emission characteristics during biochar combustion

  Takanori Itoh, Nana Fujiwara, Kazunori Iwabuchi, Takumi Narita, Dolgormaa Mendbayar, Mitsushi Kamide, Shinobu Niwa, Yutaka Matsumi

  Fuel Processing Technology 204 106408 - 106408 0378-3820 2020/07 [Refereed][Not invited]
  
• Role of ambient pressure in self-heating torrefaction of dairy cattle manure

  Takanori Itoh, Kazunori Iwabuchi, Naohiro Maemoku, Siyao Chen, Katsumori Taniguro

  PLOS ONE 15 (5) e0233027 - e0233027 1932-6203 2020/05/29 [Refereed][Not invited]
   

  This paper describes the role of ambient pressure in self-heating torrefaction of livestock manure. We explored the initiating temperatures required to cause self-heating of wet dairy cattle manure at different ambient pressures (0.1, 0.4, 0.7, and 1.0 MPa). Then, we conducted proximate, elemental, and calorific analyses of biochar torrefied at 210, 250, and 290 degrees C. The results showed that self-heating was induced at 155 degrees C or higher for 0.1 MPa and at 115 degrees C or lower for 0.4 MPa or higher. The decrease of the initiating temperature at elevated pressure was due not only to more oxygen, but also to the retention of moisture that can promote chemical oxidation of manure. Biochar yields decreased with increasing torrefaction temperature and pressure, and the yield difference at 0.1 and 1.0 MPa was more substantial at lower temperatures: a 29.8, 16.4, and 9.4% difference at 210, 250, and 290 degrees C, respectively. Proximate and elemental analyses showed that elevated pressure promotes devolatilization, deoxygenation, and coalification compared to atmospheric pressure; its impact, however, was less at higher temperatures as the torrefaction temperature became more dominant. Calorific analysis revealed that elevated pressure can increase the higher heating value (HHV) on a dry and ash-free basis at 210 degrees C because of the increase in carbon content, but its impact is limited at 250 and 290 degrees C. Meanwhile, the HHV on a dry basis exhibited the opposite trend due primarily to an enlargement of ash content. The present study revealed that ambient pressure considerably affects the initiating temperature of self-heating and the chemical properties of biochar at a low torrefaction temperature.
• The Hydrolysis Mechanism of Inulin and Its Hydrolysate in the Reaction Field by the Hot Compressed Water

  Naoto SHIMIZU, Tetsuya USHIYAMA, Takanori ITOH

  Environment Control in Biology 57 (4) 87 - 92 1880-554X 2019/10/01 [Refereed][Not invited]
  
• A new torrefaction system employing spontaneous self-heating of livestock manure under elevated pressure

  Takanori Itoh, Kazunori Iwabuchi, Naohiro Maemoku, Izumi Sasaki, Katsumori Taniguro

  Waste Management 85 66 - 72 0956-053X 2019/02 [Refereed][Not invited]
   

  This report describes a new oxidative torrefaction method employing spontaneous self-heating of feed-stock as a means of overcoming practical difficulties in converting livestock manure to biochar. We examined the initiating temperature required to induce self-heating of wet dairy cattle manure under 1.0 MPa pressure and conducted elemental and calorific analyses of the solid products prepared at 200, 250, and 300 degrees C. Self-heating was initiated with oxidation below 100 degrees C, and the lower limit of the initiation temperature was between 85 and 90 degrees C. Comparing processes performed at 0.1 and 1.0 MPa, the higher pressure promoted self-heating by both preventing heat loss due to moisture evaporation occurring at approximately 100 degrees C and supplying oxygen to the high-moisture feedstock. In addition, as drying occurred at 160-170 degrees C during the process, the system did not require pre- or post-drying. Although the heating values of the solid products decreased due to high ash content, the elemental composition of the products was altered to that of peat-like (200 degrees C) and lignite-like (250 and 300 degrees C) materials. Cessation of self-heating of the manure is recommended at approximately 250 degrees C to avoid severe decomposition at higher temperatures. Overall, these results demonstrated the utility of the proposed method for converting wet manure into dried biochar through self-heating as well as potential applications in manure management systems. (C) 2018 Elsevier Ltd. All rights reserved.
• A new approach to stabilize waste biomass for valorization using an oxidative process at 90 °C

  Takanori Itoh, Kazunori Iwabuchi, Kumpei Ota

  PLOS ONE 13 (4) e0196249 - e0196249 1932-6203 2018/04/23 [Refereed][Not invited]
   

  This study aimed to establish a new methodology for upgrading biomass quality using low-temperature (below 100 degrees C) oxidation to achieve simultaneous drying and decomposition. Sterilized manure (63% wet basis) was heated at 90 degrees C for 49 days under an oxidative environment. The obtained solid and moisture reduction curves indicated that drying and decomposition proceeded simultaneously. The biomass was decomposed by oxidation with the release of water, carbon dioxide, and volatile fatty acids such as acetic acid. The oxidation process stopped when the biomass was dehydrated, indicating that the water originally present in the biomass governed the process. Elemental and calorific analyses revealed no remarkable increase in carbon content or increased heating value, and a slight decrease in oxygen content. Although the severity of the process was insufficient to produce an optimum solid fuel due to the low temperature used, the process would enable the stabilization of waste biomass with low energy consumption such as using waste heat.
• Mass Spectrometry of Inulin Hydrolyzate Prepared Using Subcritical Water

  Takanori ITOH, Naoto SHIMIZU

  Japan Journal of Food Engineering 15 (3) 165 - 172 1345-7942 2014 [Refereed][Not invited]
  

Books etc

• 農業・食料生産分野におけるバイオマス利用工学 : 循環型社会のための生物資源利用

  農業食料工学会 (Contributor)
  コロナ社 2023/04 (ISBN: 9784339066654) viii, 314p

Conference Activities & Talks

• Stability of Composted and Carbonized Chicken Manure in Soil Used As Organic Fertilizer  [Not invited]

  Md Mahmudul Islam, Kazusa Abe, Takanori Itoh, Kazunori Iwabuchi

  ASA, CSSA, SSSA International Annual Meeting  2023/11  St. Louis
• 数理モデルを用いた自己昇温型炭化法における炭化炉サイズの決定  [Not invited]

  英翔太, 伊藤貴則, 岩渕和則, 谷黒克守

  農業環境工学関連学会 2023年合同大会  2023/09
• Effect of different feedstocks and pyrolysis temperatures of biochar on ammonia emissions during dairy manure composting  [Not invited]

  Yunsik Shin, Kazunori Iwabuchi, Takanori Itoh

  The XX CIGR World Congress 2022  2022/12  Kyoto
• Effects of operating variables on the heat balance of feedstock in self-heating torrefaction

  Takanori Itoh, Teppei Ogawa, Kazunori Iwabuchi, Katsumori Taniguro

  The XX CIGR World Congress 2022  2022/12  Kyoto
• Reducing the emission of particulate matter during the combustion of various biomass  [Not invited]

  Davaajav Dalkhsurena, Kazunori Iwabuchi, Takanori Itoh, Takumi Narita, Mahmudul Islam Piash, Baatarbileg Nachin, Gerelbaatar Sukhbaatard

  Hokkaido Branch Meeting of Japan Material Cycle and Waste Management (2022)  2022/11  Sapporo
• 自己昇温型炭化法における原料バイオマスの熱収支解析  [Not invited]

  小川哲平, 伊藤貴則, 岩渕和則, 谷黒克守

  2022年度廃棄物資源循環学会北海道支部研究発表会  2022/11  札幌
• 自己昇温型炭化法における酸化反応熱の推定  [Not invited]

  伊藤貴則, 小川哲平, 岩渕和則, 谷黒克守

  2022年度農業施設学会大会  2022/09
• 土壌中の窒素がバイオ炭による炭素貯留効果に及ぼす影響  [Not invited]

  松井優樹, 岩渕和則, 伊藤貴則

  第80回農業食料工学会年次大会  2022/09
• Effective encapsulation of biochar-based fertilizer: Utilizing the grafting potential of chitosan for sustained nitrogen release  [Not invited]

  Mahmudul Islam Piash, Kazunori Iwabuchi, Takanori Itoh

  The 22nd World Congress of Soil Science (WCSS2022)  2022/08
• The fate of hydrochar’s fuel property by hydrothermal carbonization of the Japanese larch via increasing process temperature and biomass to water ratio  [Not invited]

  Mohammed Aliyu, Kazunori Iwabuchi, Takanori Itoh

  12th International Conference on Future Environment and Energy (ICFEE 2022)  2022/01
• Verification of correlation between specific elements in ash and PM2.5 emission from biochar under low temperature combustion  [Not invited]

  舘野日向汰, Davaajav Dalkhsuren, 伊藤貴則, 岩渕和則

  2021年度廃棄物資源循環学会北海道支部研究発表会  2021/11  札幌  廃棄物資源循環学会北海道支部
  
• Potential of Dairy Manure Biochar as a Composting Amendment to Mitigate Ammonia Volatilization  [Not invited]

  Shin Yunsik, 岩渕 和則, 伊藤 貴則

  2021年度廃棄物資源循環学会北海道支部研究発表会  2021/11  札幌  廃棄物資源循環学会北海道支部
  
• Potential of Dairy Manure Biochar as a Composting Amendment to Mitigate Ammonia Volatilization  [Not invited]

  Shin Yunsik, 岩渕和則, 伊藤貴則

  第79回農業食料工学会年次大会  2021/09  福岡（オンライン）  農業食料工学会
  
• Optimizing the nutrient release from biochar: Co-pyrolysis of nutrient-rich feedstock and Ca-bentonite  [Not invited]

  Mahmudul Islam Piash, Kazunori Iwabuchi, Takanori Itoh

  5th Asia Pacific Biochar Conference (APBC2021)  2021/05
• 一般家庭内での熱電併給を目指した小型ガス化装置の開発  [Not invited]

  小川哲平, 岩渕和則, 伊藤貴則, 谷黒克守

  第79回農業食料工学会年次大会  2019/09  福岡（オンライン）  農業食料工学会
  
• 堆肥とバイオ炭の混合施用が作物収量に及ぼす影響  [Not invited]

  阿部萌花, 植村高起, 岩渕和則, 伊藤貴則

  第79回農業食料工学会年次大会  2019/09  福岡（オンライン）  農業食料工学会
  
• 自己発熱型半炭化法に及ぼす圧力の影響  [Not invited]

  前杢直宏, 伊藤貴則, 岩渕和則, 谷黒克守

  2019農食施設CIGR VI国際大会  2019/09  札幌
• 廃棄物由来バイオ炭は炭素貯留に効果があるのか  [Not invited]

  岩城光洋, 岩渕和則, 伊藤貴則

  2019農食施設CIGR VI国際大会  2019/09  札幌
• バイオマス燃焼時の灰分によるPM2.5 発生の温度依存性  [Not invited]

  成田拓海, 岩渕和則, 藤原那奈, 伊藤貴則, Mendbayar Dolgormaa

  2019農食施設CIGR VI国際大会  2019/09  札幌
• バイオ炭と堆肥の混合施用が作物生育に及ぼす影響  [Not invited]

  植村高起, 落合将暉, 岩渕和則, 伊藤貴則, 渡部敏裕, 谷黒克守

  2019農食施設CIGR VI国際大会  2019/09  札幌
• 水溶性肥料成分の吸着を目指した乳牛ふん由来バイオ炭の製造  [Not invited]

  佐々木いづみ, 伊藤貴則, 岩渕和則

  2019農食施設CIGR VI国際大会  2019/09  札幌
• Effects of pressure on the torrefaction process using self-heating of dairy manure  [Not invited]

  Naohiro Maemoku, Takanori Itoh, Kazunori Iwabuchi, Izumi Sasaki, Katsumori Taniguro

  2019 ASABE Annual International Meeting  2019/07
• 高水分家畜排せつ物を対象とした乾燥および炭化プロセスの数値モデル  [Not invited]

  伊藤清音, Sitty Nur, Shafa Binti Bakri, 伊藤貴則, 岩渕和則, 谷黒克守

  2018年度廃棄物資源循環学会北海道支部  2018/10  札幌  廃棄物資源循環学会北海道支部
  
• 水溶性肥料成分の吸着を目指した乳牛ふん由来バイオ炭の製造  [Not invited]

  佐々木いづみ, 伊藤貴則, 前杢直宏, 岩渕和則, 谷黒克守

  2018年度廃棄物資源循環学会北海道支部  2018/10  札幌  廃棄物資源循環学会北海道支部
  
• 雰囲気圧力が乳牛ふんの自己発熱反応開始温度に及ぼす影響  [Not invited]

  前杢直宏, 伊藤貴則, 佐々木いづみ, 岩渕和則, 谷黒克守

  2018年度廃棄物資源循環学会北海道支部  2018/10  札幌  廃棄物資源循環学会北海道支部
  
• 圃場へのバイオ炭施用が作物生育に及ぼす影響  [Not invited]

  植村高起, 岩渕和則, 落合将暉, 伊藤貴則, 渡部敏裕, 谷黒克守

  2018年度廃棄物資源循環学会北海道支部  2018/10  札幌  廃棄物資源循環学会北海道支部
  
• 作物生育におけるバイオ炭と堆肥の混合施用効果  [Not invited]

  落合将暉, 岩渕和則, 伊藤貴則, 渡部敏裕, 谷黒克守

  農業環境工学関連5学会2018年合同大会  2018/09  松山
• 加圧雰囲気下における乳牛ふんの酸化的低温炭化  [Not invited]

  佐々木いづみ, 伊藤貴則, 前杢直宏, 岩渕和則, 谷黒克守

  農業環境工学関連5学会2018年合同大会  2018/09  松山
• Investigation of the initiation temperature causing the self-heating of biomass in oxidative torrefaction  [Not invited]

  Takanori Itoh, Kazunori Iwabuchi, Naohiro Maemoku, Izumi Sasaki, Katsumori Taniguro

  2018 ASABE Annual International Meeting  2018/07
• Microbial decomposition of deer carcasses using composting process  [Not invited]

  Kazunori Iwabuchi, Tomoaki Yuda, Takanori Itoh, Kumpei Ota, Juzo Matsuda, Shuji Shibata

  XIX. World Congress of CIGR,  2018/04
• An approach to convert waste biomass into solid biofuels using low-temperature oxidation  [Not invited]

  Takanori Itoh, Kazunori Iwabuchi, Kumpei Ota

  XIX. World Congress of CIGR  2018/04
• 加圧雰囲気下における乳牛ふんの自己発熱反応開始温度  [Not invited]

  前杢直宏, 伊藤貴則, 佐々木いづみ, 岩渕和則, 谷黒克守

  農業環境工学関連5学会2018年合同大会  2018/09  松山
• 低温炭化プロセスにおけるバイオマスの分解機構  [Not invited]

  伊藤貴則, 岩渕和則, 太田薫平, 谷黒克守

  農業食料工学会76回年次大会  2017/09  東京  農業食料工学会
  
• 乳牛ふんの半炭化プロセスにおける乾燥モデルの検討  [Not invited]

  伊藤清音, Sitty Nur, Syafa Binti Bakri, 伊藤貴則, 岩渕和則, 谷黒克守

  農業食料工学会第76回年次大会  2017/09  東京  農業食料工学会
  
• バイオ炭の作物への施用効果  [Not invited]

  落合将暉, 柴田洋一, 岩渕和則, 伊藤貴則, 渡部敏裕, 大崎満

  農業食料工学会第76回年次大会  2017/09  東京  農業食料工学会
  
• バイオ炭の作物への施用効果  [Not invited]

  落合将暉, 柴田洋一, 岩渕和則, 伊藤貴則, 渡部敏裕, 大崎満

  農業食料工学会北海道支部第68回年次大会  2017/08  帯広  農業食料工学会北海道支部
  
• 乳牛ふんの半炭化プロセスにおける乾燥モデルの検討  [Not invited]

  伊藤清音, Sitty Nur, Syafa Binti Bakri, 伊藤貴則, 岩渕和則, 谷黒克守

  農業食料工学会北海道支部第68回年次大会  2017/08  帯広  農業食料工学会北海道支部
  
• Effect of oxygen on the decomposition of dairy manure at low-temperature carbonization  [Not invited]

  Takanori Itoh, Kazunori Iwabuchi, Kumpei Ota, Katsumori Taniguro

  2017 ASABE Annual International Meeting  2017/07
• Effects of fertilizer components of biochar on plant growth  [Not invited]

  Shoki Ochiai, Youichi Shibata, Kazunori Iwabuchi, Takanori Itoh, Toshihiro Watanabe, Mitsuru Osaki

  International Conference on Sustainable Agriculture and Biotechnology (ICSAB) 2017  2017/05
• 逆解析手法を用いた廃棄物系バイオマスの熱物性の推定  [Not invited]

  田中美礼, 岩渕和則, 谷黒克守, 伊藤貴則, 太田薫平

  2016年度廃棄物資源循環学会北海道支部ポスター発表会  2016/10  札幌  廃棄物資源循環学会北海道支部
  
• 木質チップの自然発火現象初期過程における昇温要因の解明  [Not invited]

  太田薫平, 岩渕和則, 伊藤貴則, 谷黒克守

  第27回廃棄物資源循環学会研究発表会  2016/09  和歌山  廃棄物資源循環学会
  
• 低温炭化法により作製されたバイオ炭の炭化進行度およびエネルギ収率の評価  [Not invited]

  伊藤貴則, 岩渕和則, 太田薫平, 谷黒克守

  第27回廃棄物資源循環学会研究発表会  2016/09  和歌山  廃棄物資源循環学会
  
• 木質チップの自然発火現象初期過程における昇温要因の解明  [Not invited]

  太田薫平, 岩渕和則, 伊藤貴則, 谷黒克守

  農業食料工学会北海道支部第67回年次大会  2016/09  札幌  農業食料工学会北海道支部
  
• Determination of Biochar Properties from Dairy Manure Torrefaction  [Not invited]

  Dolgormma Mendbayar, Kazunori Iwabuchi, Takanori Itoh

  International Conference on Agricultural Biodiversity and Sustainability (CABS) 2016  2016/08
• Investigation of Low-Temperature Carbonization for Organic Wastes  [Not invited]

  Takanori Itoh, Kazunori Iwabuchi, Yuki Takata, Katsumori Taniguro

  The 8th International Symposium on Machinery and Mechatronics for Agriculture and Biosystems Engineering (ISMAB)  2016/05
• 亜臨界水を用いたイヌリン加水分解物の質量分析  [Not invited]

  伊藤貴則, 清水直人

  日本食品工学会第15回（2014年度）年次大会  2014/08  つくば  日本食品工学会
  
• 亜臨界流体を用いた多糖類分解特性：水熱反応場を用いたイヌリン分解生成物の特性評価  [Not invited]

  伊藤貴則, 岩渕和則, 清水直人

  第73回農業食料工学会年次大会  2014/05  沖縄  農業食料工学会
  

MISC

• バイオ固形燃料製造のための半炭化

  伊藤貴則, 岩渕和則  農業食料工学会誌  82-  436  -441  2020  [Not refereed][Invited]
  
• 水分が有機性廃棄物の自然発火現象に及ぼす影響

  太田薫平, 岩渕和則, 伊藤貴則, 谷黒克守, 上出光志  農業食料工学会北海道支部会報  58-  25  -31  2018  [Not refereed][Not invited]
  

Industrial Property Rights

• 特許7043130:バイオマス材料の加圧環境下での処理方法  

  谷黒克守, 岩渕和則, 伊藤貴則
• 特許6374632:バイオマス材料の炭化処理方法及び炭化物の製造方法  

  谷黒克守, 岩渕和則, 伊藤貴則, 太田薫平

Awards & Honors

• 2020/09 一般社団法人農業食料工学会 研究奨励賞
   低温酸化プロセスを用いた廃棄物系バイオマスのバイオ固形燃料化技術の開発

Research Grants & Projects

• 家畜排せつ物中の残存抗生物質の分解：自己昇温型炭化法による熱分解条件の最適化

  日本学術振興会：科学研究費助成事業

  Date (from‐to) : 2024/04 -2027/03 

  Author : 伊藤 貴則
• バイオ炭からの養分供給は生物学的窒素固定を促進させるのか？

  日本学術振興会：科学研究費助成事業

  Date (from‐to) : 2023/08 -2025/03 

  Author : 伊藤 貴則
• 家畜排せつ物に残存する除草剤成分の熱分解技術の開発

  公益財団法人 栗林育英学術財団：令和5年度研究助成（個人研究の部）

  Date (from‐to) : 2023/07 -2024/03 

  Author : 伊藤貴則
• Development of innovative biochar production technology without an external heat source: Biochar production using self-heating of biomass

  Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows

  Date (from‐to) : 2017/04 -2019/03 

  Author : 伊藤 貴則

   

  本研究は高水分で取り扱い難い廃棄物系バイオマスを，持続的かつ省エネルギーな方法でバイオ炭へと変換し，廃棄物系バイオマスの資源化，エネルギー化に資することを目指し行われた。ここでは乳牛ふんをモデル材料として（１）100℃以下でのバイオ炭製造，さらには（２）300℃以上に至る自己発熱反応を利用したバイオ炭製造技術の提案についてそれぞれ検討した。
  （１）100℃以下でのバイオ炭製造 90℃での低温酸化プロセスを用いて乳牛ふんの酸化分解を進め，得られた試料の元素分析（CHNO）および高位発熱量（HHV）測定を行った。炭素含有率およびHHVは当初想定していたような大幅な増加は認められなかったものの，回収固形物の元素組成は泥炭に似た組成を有しており，従来の半炭化（200-300℃）や炭化（400℃以上）よりも極めて低い温度域で，バイオマスの改質化を達成できることを示した。 （２）自己発熱反応を利用したバイオ炭製造技術の提案 上述の100℃以下での酸化反応を進めるためには，炭化プロセスには不要と考えられてきた水分が重要な役割を担っていることを前年度までに明らかにした。この知見はバイオマスと酸素分子が反応できる状態，すなわち適度な水分状態に保たれたバイオマスに空気（酸素）を供給することで，バイオマスの自然発火に至るような酸化反応を常温付近から引き起こすことが可能という新たな仮説に繋がった。この仮説について検証を進めたところ，湿潤状態の乳牛ふんを加圧環境におき，空気を連続供給することで300℃以上に至る自己発熱反応が90℃付近から誘発されることを明らかにした。このメカニズムを利用して作成された乳牛ふん由来のバイオ炭は褐炭と同等の元素組成を有していた。
• 廃棄物系バイオマスのための新規炭化技術の開発：超低温炭化法によるバイオ炭製造

  一般社団法人ヤンマー資源循環支援機構：平成29年度助成事業

  Date (from‐to) : 2017/04 -2018/03 

  Author : 伊藤貴則

Educational Activities

Teaching Experience