Enhancement of anaerobic methanogenesis at a short hydraulic retention time via bioelectrochemical enrichment of hydrogenotrophic methanogens

摘要：

　　Anaerobic digestion (AD),an important energy strategy for converting organic wastes to methane,is limited in practical applicability due to the relatively long hydraulic retention time (HRT).A coupling process of anaerobic digestion and electromethanogenesis was proposed to enhance anaerobic digestion at a short HRT in this study.Microorganisms analysis indicated that electric-biological reactor enriched hydrogenotrophic methanogen,helping achieve high organics removal (71.0% vs 42.3%) and CH4 production (64.5 mL/h vs 3.4 mL/h),while the additional electric input of this electric-biological reactor only accounted for 8.3% of the extra energy income from CH4 production of this reactor.This study provided an economically feasible scheme to treat wastewater.

关键词： Anaerobic digestion bioelectrochemical system Hydrogenotrophic methanogens Short HRT

作者: Yang Li Yaobin Zhang

作者单位: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China

会议类型: 国际会议

会议名称: The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)

会议地点: 北京

会议语种:英文

页码: 636-639

在线出版日期: 2017-10-17（万方平台首次上网日期，不代表论文的发表时间）