Bioresource Technology 249 (2018) 799–808 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Understanding azo dye anaerobic bio-decolorization with artiﬁcial redox mediator supplement: Considering the methane production a a,b, a a a Ruobin Dai , Xiaoguang Chen , Xinyi Xiang , Yu Wang , Fengbo Wang College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Artiﬁcial redox mediators (ARM) have been proven to accelerate the azo dye anaerobic bio-reduction (ADAB) Electron shuttle but the mechanisms involved are still unclear. Previous studies do seldom focus on the production of methane Inhibitory eﬀect during the ADAB, particularly if supplemented with ARM. Our studies revealed that the supplement of ARM Competition could signiﬁcantly accelerate the decolorization rate, recover the inhibited methanogenesis and decrease ex- Microbial community tracellular polymeric substance secretion in an ADAB system. Supplement of an ARM only enhanced the pre- High-throughput sequencing existing metabolic pathway of the ADAB system. Signiﬁcant diﬀerences in metabolic pathway and microbial Optimization community were found between traditional methanogenic system and ADAB system by high-throughput se- quencing
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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