TY - JOUR
T1 - Reductive dechlorination and mineralization of pentachlorophenol in biocathode microbial fuel cells
AU - Huang, Liping
AU - Chai, Xiaolei
AU - Quan, Xie
AU - Logan, Bruce E.
AU - Chen, Guohua
N1 - Funding Information:
We gratefully acknowledge financial support from the National Basic Research Program of China (No. 2011CB936002 ) and the Natural Science Foundation of China (Nos. 21077017 and 51178077 ).
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2012/5
Y1 - 2012/5
N2 - 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±0.05mg/L-h (51.5mg/gVSS-h) along with power generation of 2.5±0.03W/m3. Operating the biocathode MFC at 50°C improved the PCP degradation rate to 0.523±0.08mg/L-h (103mg/gVSS-h) and power production to 5.2±0.03W/m3. A pH of 6.0 increased the PCP degradation rate to 0.365±0.02mg/L-h (71.5mg/gVSS-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.
AB - 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±0.05mg/L-h (51.5mg/gVSS-h) along with power generation of 2.5±0.03W/m3. Operating the biocathode MFC at 50°C improved the PCP degradation rate to 0.523±0.08mg/L-h (103mg/gVSS-h) and power production to 5.2±0.03W/m3. A pH of 6.0 increased the PCP degradation rate to 0.365±0.02mg/L-h (71.5mg/gVSS-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.
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U2 - 10.1016/j.biortech.2012.01.171
DO - 10.1016/j.biortech.2012.01.171
M3 - Article
C2 - 22357291
AN - SCOPUS:84858752481
SN - 0960-8524
VL - 111
SP - 167
EP - 174
JO - Bioresource technology
JF - Bioresource technology
ER -
