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ID 34540
本文ファイル
著者
Awata, Takanori
Tanabe, Katsuichiro
Ohashi, Akiyoshi
キーワード
anaerobic ammonium oxidation (anammox)
enrichment
marine anammox bacteria
NDC
公害・環境工学
抄録(英)
Anaerobic ammonium oxidation (anammox) involves the microbiological oxidation of ammonium with nitrite as the electron acceptor and dinitrogen gas as the main product. The Scalindua species, an anammox genus that dominates natural habitats, plays an important role in catalysing the loss of nitrogen from marine environments. Until now, a few Scalindua species have been reported to be enriched from sea sediments. The objective of this study is to enrich marine anammox bacteria with coastal sediments in Hiroshima Bay as the inocula. The enrichment was achieved using a continuous upflow column reactor with synthetic sea water containing ammonium and nitrite. After 48 days of incubation, a simultaneous decrease in ammonium and nitrite was observed. A total nitrogen removal rate of 1.16 kg-N m-3 day-1 was attained after 306 days of incubation when the nitrogen loading rate was 1.32 kg-N m-3 day-1. Phylogenetic analysis revealed that the sequence similarity between the marine anammox-like bacteria in this reactor and the unidentified Candidatus Scalindua sp. was 96–98%. We successfully enriched marine anammox bacteria in the sediments of Hiroshima Bay by using synthetic sea water. Further studies are needed to investigate the characteristics of marine anammox bacteria, including optimal pH, temperature, and nitrogen loading rate.
掲載誌名
Water Science & Technology
63巻
5号
開始ページ
965
終了ページ
970
出版年月日
2011
出版者
IWA Publishing
ISSN
0273-1223
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) IWA Publishing 2011. The definitive peer-reviewed and edited version of this article is published in Water Science & Technology Vol. 63, No. 5, pp.965–970, 2011. doi:10.2166/wst.2011.277 and is available at www.iwapublishing.com.
関連情報URL
部局名
工学研究科