期刊
BIORESOURCE TECHNOLOGY
卷 126, 期 -, 页码 101-106出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.09.001
关键词
Microbial fuel cell; Fe(II)-EDTA catalyzed persulfate; Orange G decolorization; Maximum power density
资金
- National Natural Science Foundation of China [20977026]
- National 863 High Technology Research Foundation of China [2006AA06Z407]
- Research Fund for the Doctoral Program of Higher Education of China [20090161110009]
- SRF for ROCS, SEM [521294018]
- Fundamental Research Funds for the Central Universities of Hunan University [531107040375]
This study constructed a microbial fuel cell (MFC) using Fe(II)-EDTA catalyzed persulfate as the cathode solutions to decolorize Orange G (OG) and harvest electricity simultaneously. Chelated Fe2+ could activate persulfate to generate sulfate free radicals (SO4-) which with high oxidation potential (E-0 = 2.6 V) can degrade azo dyes. The influence of some important factors such as pH value of cathode solutions, dosages of K2S2O8, Fe2+ and EDTA were investigated in a two-chamber microbial fuel cell. Under an optimal condition, the maximum power density achieved 91.1 mW m(-2), the OG removal rate was 97.4% and the K2S2O8 remaining rate was 47.3% after 12 h. The OG degradation by Fe(II)-EDTA catalyzed persulfate was found to follow the second-order kinetic model. (C) 2012 Elsevier Ltd. All rights reserved.
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