Dissolved methane oxidation and competition for oxygen in down-flow hanging sponge reactor for post-treatment of anaerobic wastewater treatment
Bioresource Technology 102 巻 22 号
10299-10304 頁
2011 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Dissolved methane oxidation and competition for oxygen in down-flow hanging sponge reactor for post-treatment of anaerobic wastewater treatment
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| 作成者 |
Hatamoto Masashi
Miyauchi Tomo
Ohashi Akiyoshi
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| 収録物名 |
Bioresource Technology
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| 巻 | 102 |
| 号 | 22 |
| 開始ページ | 10299 |
| 終了ページ | 10304 |
| 抄録 |
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.
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| 著者キーワード |
Greenhouse gas
Methane oxidation
Anaerobic treatment
Post-treatment
Down-flow hanging sponge (DHS)
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| NDC分類 |
公害・環境工学 [ 519 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Elsevier Science Ltd
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| 発行日 | 2011 |
| 権利情報 |
(c) 2011 Elsevier B.V. All rights reserved.
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0960-8524
[DOI] 10.1016/j.biortech.2011.08.099
[NCID] AA11522750
[DOI] http://dx.doi.org/10.1016/j.biortech.2011.08.099
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