Masaaki Hosomi

Tokyo University of Agriculture and Technology

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Akihiko Terada

Tokyo University of Agriculture and Technology

S. Nakai

Hiroshima University

Shohei Riya

Tokyo University of Agriculture and Technology

Akihiko Murakami

Anges (Japan)

Sheng Zhou

Shanghai Academy of Agricultural Sciences

Byung-Dae Lee

Uiduk University

Toshikazu Suenaga

Tokyo University of Agriculture and Technology

Hong Hou

Chinese Research Academy of Environmental Sciences

Tomoyuki Hori

National Institute of Advanced Industrial Science and Technology

Ryuichi Sudo

Ecological Engineering Institute

Cooperative Institutions

Tokyo University of Agriculture and Technology

161

The University of Tokyo

National Institute for Environmental Studies

Tohoku University

Kyoto University

Hiroshima University

National Institute of Advanced Industrial Science and Technology

Chinese Academy of Sciences

Nagoya University

Hokkaido University

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Impact of turning waste on performance and energy balance in thermophilic solid-state anaerobic digestion of agricultural waste

Waste Management (2019)

Lingyu Meng Li Xie Shohei Riya Akihiko Terada Masaaki Hosomi

Digestate

Sewage sludge

Biogas

10.1016/j.wasman.2019.02.012

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Citations (16)

Future in Water Research Development of Environmental Sedimentology

Japan journal of water pollution research (1985)

Masaaki Hosomi

Water development

10.2965/jswe1978.8.208

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Effect of carbon sources on nitrous oxide emission in a modified Ludzak Ettinger process

Water Science & Technology (2015)

Kang Song Shohei Riya Masaaki Hosomi Akihiko Terada

Effect of methanol and glycerol on nitrous oxide (N2O) emission in two laboratory-scale modified Ludzak Ettinger (MLE) processes was investigated during three distinct periods: dissolved oxygen (DO) control by intermittent aeration with a DO controller, and high and low aeration rates. N2O consumption rate in an anoxic tank and aeration mode influenced N2O emission rates from the MLE processes. In the DO control period, N2O emission rate from the glycerol-fed MLE process was higher than the methanol-fed counterpart, likely caused by a higher N2O consumption rate in an anoxic tank of the methanol-fed process. During the period of a higher aeration rate, N2O emission rates from both processes were comparable. In contrast, during the period of a lower aeration rate, N2O emission rate from the methanol-fed MLE process was higher than that from the glycerol-fed counterpart likely because of a higher degree of nitrite accumulation, corroborated by statistical analysis. N2O consumption activities of biomasses fed with the different carbon sources were distinct. However, the high activity did not necessarily result in a decrease in N2O emission rate from an aerobic tank and the effect of nitrite on the emission was stronger under the tested conditions.

Nitrous oxide

10.2166/wst.2015.250

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Citations (2)

Waste Management Research (2000)

Masaaki Hosomi

PCBの製造および輸入の禁止, 開放系での使用禁止, 回収などの措置を受けてからすでに28年が経過した。使用中あるいは保管されているPCBを含む電気機器から環境への放出が懸念されている。一方で, 廃棄物処理法では, 焼却法だけではなく, 脱塩素化分解法と超臨界水酸化分解法がPCB処理法として認められた。本文では, PCB汚染問題の経緯と化学処理技術の概要をまとめた上で, 今後の課題として, PCB問題をダイオキシンの観点から見直す必要性を示すとともに, PCB汚染物の処理技術として溶媒洗浄法や真空加熱分離法などの実用化に向けて課題を抽出した。

10.3985/wmr.11.197

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Citations (3)

Trade-off evaluation using carbon dioxide equivalent and hazard index of a paddy soil with application of organic liquid fertilizer

Pedosphere (2022)

Shohei Riya Ryo IMANO Jining LI Huifeng Sun Sheng Zhou

Organic fertilizer

Soil carbon

10.1016/j.pedsph.2022.06.040

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Citations (2)

高圧ジェット装置による細菌の破壊の単一細胞解析:原子間力顕微鏡の応用【Powered by NICT】

Chemical Engineering Journal (2016)

Xie Li Qian Bao Akihiko Terada Masaaki Hosomi

Source

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Microbial Degradation of Estrogens by an Ammonia-oxidizing Bacterium.

Journal of Japan Society on Water Environment (2002)

Jianghong Shi S. Nakai Masaaki Hosomi

This study aimed to confirm whether or not an ammonia-oxidizing bacterium (Nitrosomonas europaea) could degrade natural estrogens, estrone (E1), 17β-estradiol (E2), and a synthetic estrogen, ethynyl estradiol (EE2). Cultivation of N. europaea in a culture medium containing each estrogen at a concentration of 0.4 mg·l-1 demonstrated that N. europaea could degrade up to 95% of the estrogens during the first 187 hours of cultivation. The obtained degradation rate constants of the three estrogens did not show significant difference. It should be noted that the degradation of the three estrogens by N. europaea produced unknown compounds, as confirmed by analyzing the culture mediums of N. europaea by reversed-phase high-performance liquid chromatography equipped with an electrochemical detector (HPLC-ECD). Based on the finding that these electrochemically detectable compounds were more easily eluted than their parent compounds, i. e. E1, E2 and EE2, on the HPLC-ECD, it was suggested that N. europaea degraded the three estrogens to produce more polar compounds containing phenolic groups.

Nitrosomonas europaea

Degradation

Oxidizing agent

10.2965/jswe.25.681

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Citations (3)

Applicability of K d for modelling dissolved 137 Cs concentrations in Fukushima river water: Case study of the upstream Ota River

Journal of Environmental Radioactivity (2018)

Kazuyuki Sakuma Hideki Tsuji Seiji Hayashi Hironori Funaki Alex Malins

Base flow

10.1016/j.jenvrad.2018.01.001

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Citations (15)

Effect of Molecular Structure and Organic Additives on Supercritical Water Oxidation of Nitrogenous Compounds

KAGAKU KOGAKU RONBUNSHU (2006)

Hiroshi Obuse Shingo Yamada S. Nakai Makoto Takada Masaaki Hosomi

超臨界水酸化による含窒素化合物の除去効率に関わる因子を明らかにすることを目的とし，分解対象の含窒素化合物の分子構造および添加剤としての有機化合物が与える影響を調べた．炭酸アンモニウム，尿素，およびホルムアミド系の化合物を用いて含窒素化合物の分子構造の影響を評価した結果，窒素原子に結合する炭素数が多いほど窒素除去率が向上する傾向が認められた．また，反応系にメタノールをはじめとする有機化合物を添加した場合にも同様の傾向が確認された．窒素除去率の向上は，有機物の超臨界水酸化過程で生成するラジカル種とアンモニアおよびその他の含窒素化合物との反応によるものと推定された．

Supercritical water oxidation

10.1252/kakoronbunshu.32.363

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Citations (1)

Ethanol washing of PAH-contaminated soil and Fenton oxidation of washing solution

Journal of Material Cycles and Waste Management (2000)

Byung-Dae Lee Masaaki Hosomi

Fluoranthene

Acenaphthene

Acenaphthylene

Chrysene

Polycyclic aromatic hydrocarbon

10.1007/s10163-999-0012-7

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Citations (18)