Bioresource Technology 214 (2016) 175–183 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Effect of inﬂuent COD/SO ratios on biodegradation behaviors of starch wastewater in an upﬂow anaerobic sludge blanket (UASB) reactor a b a a a a,c,⇑ Xueqin Lu , Guangyin Zhen , Jialing Ni , Toshimasa Hojo , Kengo Kubota , Yu-You Li Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, Miyagi 980-8579, Japan National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-0053, Japan Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi 980-8579, Japan highl i ghts graphical a bstrac t Sulﬁdogenesis was essential to the UASB operation and process stability. Reactor showed the high stability at COD/SO ratios P2 with efﬁcient removal of COD and sulfate. Sulﬁdogenesis promoted propionate degradation and acetoclastic methanogenesis. Excessive sulﬁdogenesis suppressed methanogenesis, deteriorating bioenergy conversion. article i nfo abstract Article history: A lab-scale upﬂow anaerobic sludge blanket (UASB) has been run for 250 days to investigate the inﬂuence Received 9 March 2016 of inﬂuent COD/SO ratios on the biodegradation behavior of starch wastewater and process perfor- Received in revised form 10 April 2016 2 mance. Stepwise decreasing COD/SO ratio enhanced sulﬁdogenesis, complicating
Bioresource Technology – Elsevier
Published: Aug 1, 2016
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