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ID 34793
本文ファイル
著者
Hatamoto, Masashi
Miyauchi, Tomo
Ohashi, Akiyoshi
キーワード
Greenhouse gas
Methane oxidation
Anaerobic treatment
Post-treatment
Down-flow hanging sponge (DHS)
NDC
公害・環境工学
抄録(英)
Post-treatment of anaerobic wastewater was undertaken to biologically oxidize dissolved methane, with the aim of preventing methane emission. The performance of dissolved methane oxidation and competition for oxygen among methane, ammonium, organic matter, and sulfide oxidizing bacteria were investigated using a lab-scale closed-type down-flow hanging sponge (OHS) reactor. Under the oxygen abundant condition of a hydraulic retention time of 2 h and volumetric air supply rate of 12.95 m(3)-air m(-3) day(-1), greater than 90% oxidation of dissolved methane, ammonium, sulfide, and organic matter was achieved. With reduction in the air supply rate, ammonium oxidation first ceased, after which methane oxidation deteriorated. Sulfide oxidation was disrupted in the final step, indicating that COD and sulfide oxidation occurred prior to methane oxidation. A microbial community analysis revealed that peculiar methanotrophic communities dominating the Methylocaldum species were formed in the DHS reactor operation. (C) 2011 Elsevier Ltd. All rights reserved.
掲載誌名
Bioresource Technology
102巻
22号
開始ページ
10299
終了ページ
10304
出版年月日
2011
出版者
Elsevier Science Ltd
ISSN
0960-8524
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
(c) 2011 Elsevier B.V. All rights reserved.
関連情報URL
部局名
工学研究科