点击次数：

论文类型：期刊论文

发表时间：2012-05-01

发表刊物：BIORESOURCE TECHNOLOGY

收录刊物：PubMed、EI、SCIE

卷号：111

页面范围：167-174

ISSN号：0960-8524

关键字：Microbial fuel cell; Biocathode; Pentachlorophenol; Degradation pathway

摘要：Simultaneous anaerobic and aerobic degradation pathways in two-chamber, tubular microbial fuel cells (MFCs) facilitated pentachlorophenol (PCP) mineralization by a mediator-less biocathode. PCP was degraded at a rate of 0.263 +/- 0.05 mg/L-h (51.5 mg/g VSS-h) along with power generation of 2.5 +/- 0.03 W/m(3). Operating the biocathode MFC at 50 degrees C improved the PCP degradation rate to 0.523 +/- 0.08 mg/L-h (103 mg/g VSS-h) and power production to 5.2 +/- 0.03 W/m(3). A pH of 6.0 increased the PCP degradation rate to 0.365 +/- 0.02 mg/L-h (71.5 mg/g VSS-h), but reduced power. While mediators were not needed, adding anthraquinone-2,6-disulfonate increased power and PCP degradation rates. Dominant bacteria most similar to the anaerobic Desulfobacterium aniline, Actinomycetes and Streptacidiphilus, and aerobic Rhodococcus erythropolis, Amycolatopsis and Gordonia were found on the biocathode. These results demonstrate efficient degradation of PCP in biocathode MFCs and the effects of temperature, pH and mediators. (C) 2012 Elsevier Ltd. All rights reserved.