点击次数：

论文类型：期刊论文

发表时间：2013-05-01

发表刊物：BIORESOURCE TECHNOLOGY

收录刊物：SCIE、EI、PubMed

卷号：136

页面范围：273-280

ISSN号：0960-8524

关键字：Microbial electrolysis cell (MEC); Anaerobic reactor; Microbial community; Aze dye wastewater; Pyrosequencing

摘要：Microbial electrolysis cell (MEC) devices are efficient for wastewater treatment, but its application was limited due to low anode oxidation rate. The objective of this study was to improve anode performance of a MEC combined anaerobic reactor (R1) for high concentration industrial wastewater treatment via dosing Fe(OH)(3). For the first 53 days without power, the addition of Fe(OH)(3) in R1 enhanced the degradation of reactive brilliant red X-3B dye and sucrose. Applying a voltage of 0.8 V in R1 resulted in a higher decolorization and COD removal through driving the redox reactions at electrodes under Fe(III)-reducing conditions. Real-time PCR and enzyme activity analysis showed that the abundance and azoreductase activity of bacteria were improved in RI. Pyrosequencing revealed that dominant populations in anode biofilm and R1 were more diverse and abundant than the common anaerobic reactor (R2), and there was a significant distinction among anode film, R1 and R2 in microbial community structure. (C) 2013 Elsevier Ltd. All rights reserved.