Anaerobic treatment of municipal wastewater at ambient temperature: Analysis of archaeal community structure and recovery of dissolved methane

Bandara, Wasala M.K.R.T.W.; Kindaichi, Tomonori; Satoh, Hisashi; Sasakawa, Manabu; Nakahara, Yoshihito; Takahashi, Masahiro; Okabe, Satoshi

Anaerobic treatment of municipal wastewater at ambient temperature: Analysis of archaeal community structure and recovery of dissolved methane

Bandara, Wasala M.K.R.T.W.; Kindaichi, Tomonori; Satoh, Hisashi et al.

Water Research, 2012, 46(17), 5756-5764

Permalink : https://hdl.handle.net/2115/50385

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アクセス権	open access
URI	https://hdl.handle.net/2115/50385
タイトル	Anaerobic treatment of municipal wastewater at ambient temperature: Analysis of archaeal community structure and recovery of dissolved methane
著者	Bandara, Wasala M.K.R.T.W. ; Kindaichi, Tomonori ; Satoh, Hisashi ; Sasakawa, Manabu ; Nakahara, Yoshihito ; Takahashi, Masahiro ; Okabe, Satoshi
著者名 Bandara, Wasala M.K.R.T.W.
著者名 Kindaichi, Tomonori
e-Rad_Researcher 80326636 著者名 Satoh, Hisashi
著者名 Sasakawa, Manabu
著者名 Nakahara, Yoshihito
著者名 Takahashi, Masahiro
e-Rad_Researcher 10253816 著者名 Okabe, Satoshi
言語	英語
キーワード	Archaeal community structure
	Degassing membrane
	Dissolved methane
	Municipal wastewater
	Psychrophilic condition
	Upflow anaerobic sludge blanket process
発行日	2012-11-01
出版者	Elsevier
収録物名	Water Research
巻(号)	46(17)
ページ	5756-5764
抄録	Anaerobic treatment is an attractive option for the biological treatment of municipal wastewater. In this study, municipal wastewater was anaerobically treated with a bench-scale upflow anaerobic sludge blanket (UASB) reactor at temperatures from 6-31℃ for 18 months to investigate total chemical oxygen demand (COD) removal efficiency, archaeal community structure, and dissolved methane (D-CH4) recovery efficiency. The COD removal efficiency was more than 50% in summer and below 40% in winter with no evolution of biogas. Analysis of the archaeal community structures of the granular sludge from the UASB using 16S rRNA gene-cloning indicated that after microorganisms had adapted to low temperatures, the archaeal community had a lower diversity and the relative abundance of acetoclastic methanogens decreased together with an increase in hydrogenotrophic methanogens. D-CH4, which was detected in the UASB effluent throughout the operation, could be collected with a degassing membrane. The ratio of the collection to recovery rates was 60% in summer and 100% in winter. For anaerobic treatment of municipal wastewater at lower temperatures, hydrogenotrophic methanogens play an important role in COD removal and D-CH4 can be collected to reduce greenhouse gas emissions and avoid wastage of energy resources.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0043-1354
関連情報	PMID 22921025
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.watres.2012.07.061