Effects of dissolved oxygen and pH on nitrous oxide production rates in autotrophic partial nitrification granules

Rathnayake, Rathnayake M.L.D.; Oshiki, Mamoru; Ishii, Satoshi; Segawa, Takahiro; Satoh, Hisashi; Okabe, Satoshi

Effects of dissolved oxygen and pH on nitrous oxide production rates in autotrophic partial nitrification granules

Rathnayake, Rathnayake M.L.D.; Oshiki, Mamoru; Ishii, Satoshi et al.

Bioresource Technology, 2015, 197, 15-22

Permalink : https://hdl.handle.net/2115/67732

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論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/67732
タイトル	Effects of dissolved oxygen and pH on nitrous oxide production rates in autotrophic partial nitrification granules
著者	Rathnayake, Rathnayake M.L.D. ; Oshiki, Mamoru ; Ishii, Satoshi ; Segawa, Takahiro ; Satoh, Hisashi ; Okabe, Satoshi
著者名 Rathnayake, Rathnayake M.L.D.
著者名 Oshiki, Mamoru
著者名 Ishii, Satoshi
著者名 Segawa, Takahiro
e-Rad_Researcher 80326636 著者名 Satoh, Hisashi
e-Rad_Researcher 10253816 著者名 Okabe, Satoshi
言語	英語
キーワード	N2O emissions
	autotrophic partial nitrification granule
	dissolved oxygen effect
	16S rRNA gene deep sequencing
	N2O microsensor
発行日	2015-12
出版者	Elsevier
収録物名	Bioresource Technology
巻(号)	197
ページ	15-22
抄録	The effects of dissolved oxygen (DO) and pH on nitrous oxide (N2O) production rates and pathways in autotrophic partial nitrification (PN) granules were investigated at the granular level. N2O was primarily produced by betaproteobacterial ammonia-oxidizing bacteria, mainly Nitrosomonas europaea, in the oxic surface layer (<200 μm) of the autotrophic PN granules. N2O production increased with increasing bulk DO concentration owing to activation of the ammonia (i.e., hydroxylamine) oxidation in this layer. The highest N2O emissions were observed at pH 7.5, although the ammonia oxidation rate was unchanged between pH 6.5 and 8.5. Overall, the results of this study suggest that in situ analyses of PN granules are essential to gaining insight into N2O emission mechanisms in a granule.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0960-8524
関連情報	PMID 26318242
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.biortech.2015.08.054