著者

段 智久 松村 千里 岡村 秀雄

出版者

神戸大学

雑誌

基盤研究(B)

巻号頁・発行日

2017-04-01

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本研究では、木タールや舶用重質油などねばりけの高い物質が燃える状態をよくするためにジメチルエーテルという物質を液化させて混合し、混合燃料として使用することを試みた。その結果、微小な残留物が多く残る木タールは、ある程度運転は可能であるが、長時間運転が困難であるという結果となった。また二種類の物質を連続的に混合しながら供給できるシステムを構築した。液体と液体の混合送油は、その実用性を確認できたが、揮発性の高い液体と液体の混合については十分な試験が行えておらず、今後の継続的な課題としたい。

著者

三原 悠 浅野 一朗 段 智久 岡村 秀雄 松村 千里 羽賀 雄紀 中坪 良平

出版者

公益社団法人 日本マリンエンジニアリング学会

雑誌

マリンエンジニアリング (ISSN:13461427)

巻号頁・発行日

vol.56, no.3, pp.473-483, 2021-05-01 (Released:2021-06-02)

参考文献数

29

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As a way to improve the combustion characteristics of wood tar which is highly viscous and flame retardant, the authors blended it with liquefied dimethyl ether (DME), which can improve fuel fluidity, ignitability and spray atomization. Moreover, heavy fuel oil (bunker-c oil) was added to increase the heating value of this fuel sample. The sample, which has the blending ratio of 35 % wood tar, 30% DME and 35% bunker-c by weight, was used in a combustion test with a three-cylinder in-direct injection diesel engine. Additionally, the authors also investigated particulate matter (PM) produced after burning four samples that mixed liquefied DME with flame retardant fuels in the same engine to analyze its environmental and biological impacts. The four samples prepared for the experiment were (1) 70% distillate oil (bunker-a) and 30% DME; (2) 85% bunker-c and 15% DME; (3) 70% bunker-c and 30% DME; (4) 35 % bunker-c, 30% DME and 35% wood tar.  The results of the engine test suggested the possibility that wood tar could become more combustible by optimizing the flow rate of fuel and the blend ratio of liquefied DME and bunker-c. In the (4) case, PM showed no high mutagenic potentials and there were lower concentrations of such inorganic substances as vanadium and nickel. Polycyclic aromatic hydrocarbons (PAHs) concentrations in PM decreased by blending liquefied DME with bunker-c, whereas did not decrease for the wood tar.

著者

竹峰 秀祐 高田 光康 山本 勝也 松村 千里 藤森 一男 渡辺 信久 中野 武 近藤 明

出版者

一般社団法人 日本環境化学会

雑誌

環境化学 (ISSN:09172408)

巻号頁・発行日

vol.23, no.1, pp.55-60, 2013 (Released:2013-09-25)

参考文献数

24

被引用文献数

2 2

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In this study, an analytical method for perfluorinated compounds (PFCs) in granular activated carbon (GAC) was investigated. The investigation of analysis was conducted by using GAC which adsorbed PFCs from artificial waste water containing PFCs of known amount. As results, it was confirmed that Accelerated solvent extraction (ASE) method using acetone as the solvent was appropriate for the extraction of PFCs in GAC.PFCs in used GAC samples, regenerated GAC samples, and a new GAC sample were analyzed by using the investigated method. The concentration of PFCs in the regenerated GAC was decreased by more than 99.9% compared with the used one. PFCs in GAC may transform and/or desorb at regeneration processes.

著者

西野 貴裕 加藤 みか 宮沢 佳隆 東條 俊樹 市原 真紀子 浅川 大地 松村 千里 羽賀 雄紀 吉識 亮介 長谷川 瞳 宮脇 崇 高橋 浩司 片宗 千春 下間 志正

出版者

一般社団法人 日本環境化学会

雑誌

環境化学 (ISSN:09172408)

巻号頁・発行日

vol.30, pp.37-56, 2020 (Released:2020-02-19)

参考文献数

56

被引用文献数

1 2

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Quantitative analysis of pharmaceuticals and personal care products (PPCPs) in three environmental medias (air, water, and sediment) were carried out via a network of regional environmental research institutes in five large cities (Tokyo, Nagoya, Hyogo, Osaka, and Fukuoka) in Japan. The study took place from FY2016 to FY2018 as a part of a risk assessment for aquatic organisms. Analysis data of water samples from the five cities were carried out at the Tokyo Metropolitan Research Institute for Environmental Protection. The risk assessment for aquatic organisms was carried out by comparing the sample data with the predicted no-effect concentrations (PNECs) gathered from various sources. Concentration levels of five chemicals (clarithromycin, erythromycin, diclofenac, carbamazepine, and triclosan) exceeded the PNECs in several water samples. Concentrations of antibiotics, such as clarithromycin, and antihistamines, such as fexofenadine, tended to be higher during January to February than during June to August. In contrast, concentrations of insect repellents such as N, N-diethyl-m-toluamide (DEET) tended to be higher during June to August than during January to February. The discharge sources of these chemicals would be effluents from plants, such as sewage treatment plants, that were not completely treated. Estimated PPCPs loads accumulated by inflow data of Tamagawa river were compared with measured load value in this study. For some of these chemicals, such as fexofenadine and diclofenac, estimated loads did not coincide with measured loads at sampling points along the Tamagawa River. These differences were thought to occur as the consumption of fexofenadine increased rapidly during the research period, and diclofenac photodegraded while flowing down the river.

著者

三原 悠 浅野 一朗 段 智久 岡村 秀雄 松村 千里 羽賀 雄紀 中坪 良平

出版者

公益社団法人 日本マリンエンジニアリング学会

雑誌

マリンエンジニアリング (ISSN:13461427)

巻号頁・発行日

vol.56, no.3, pp.473-483, 2021

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<p>  As a way to improve the combustion characteristics of wood tar which is highly viscous and flame retardant, the authors blended it with liquefied dimethyl ether (DME), which can improve fuel fluidity, ignitability and spray atomization. Moreover, heavy fuel oil (bunker-c oil) was added to increase the heating value of this fuel sample. The sample, which has the blending ratio of 35 % wood tar, 30% DME and 35% bunker-c by weight, was used in a combustion test with a three-cylinder in-direct injection diesel engine. Additionally, the authors also investigated particulate matter (PM) produced after burning four samples that mixed liquefied DME with flame retardant fuels in the same engine to analyze its environmental and biological impacts. The four samples prepared for the experiment were (1) 70% distillate oil (bunker-a) and 30% DME; (2) 85% bunker-c and 15% DME; (3) 70% bunker-c and 30% DME; (4) 35 % bunker-c, 30% DME and 35% wood tar.</p><p>  The results of the engine test suggested the possibility that wood tar could become more combustible by optimizing the flow rate of fuel and the blend ratio of liquefied DME and bunker-c. In the (4) case, PM showed no high mutagenic potentials and there were lower concentrations of such inorganic substances as vanadium and nickel. Polycyclic aromatic hydrocarbons (PAHs) concentrations in PM decreased by blending liquefied DME with bunker-c, whereas did not decrease for the wood tar.</p>

著者

功刀 正行 阿部 幸子 鶴川 正寛 松村 千里 藤森 一男 中野 武

出版者

公益社団法人 日本分析化学会

雑誌

分析化学 = Japan analyst (ISSN:05251931)

巻号頁・発行日

vol.59, no.11, pp.967-984, 2010-11-05

参考文献数

25

被引用文献数

1 2

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残留性有機汚染物質による地球規模の海洋汚染の時空間変動及び化学動態を把握するため,商船を篤志観測船として用い,この目的のために開発した海洋汚染観測システムを搭載し,太平洋及び南シナ海における広域観測を実施した.日本-オーストラリア間は鉱石運搬船を,南太平洋(含む南極近海)はクルーズ船を,北太平洋(東アジア-北米間)及び南シナ海はコンテナ船を,それぞれ篤志観測船として用いた.鉱石運搬船,クルーズ船には専用の海洋汚染観測システムを開発し搭載し,コンテナ船にはユニット化した小型の海洋汚染観測システムを開発して搭載し,試料採取及び観測を実施した.海水中の残留性有機汚染物質の捕集は,固相抽出法を用い,船上で100 Lの海水を濃縮捕集し,採取試料は直ちに船上で冷凍保存し,日本に持ち帰った.持ち帰った試料は冷凍庫で保存し,分析直前に前処理後HRGC/HRMS-SIM法で分析した.すべての試料から残留性有機汚染物質が検出された.低緯度海域では,HCHsの濃度は低く,かつその異性体のうちβ-HCHが最も高い,一方高緯度海域では中央から北米沿岸域ほどα-HCHが高い傾向にあるなどその濃度や異性体存在比などは極めて特徴的であり,発生源及び輸送過程を推定する上で貴重な情報を与えることが明らかとなった.