期刊
BIORESOURCE TECHNOLOGY
卷 175, 期 -, 页码 624-628出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.10.091
关键词
Integrated system; Bioelectrochemical system (BES); Anaerobic sludge reactor (ASR); Decolorization; Azo dye
资金
- National Science Foundation [53751225802]
- Shanghai Tongji Gao Tingyao Environmental Science & Technology Development Foundation (STGEF)
- Science Fund for National Creative Research Groups [51121062]
- National High-tech R&D Program of China [2012AA051502]
A new integrated system, embedding a modular bioelectrochemical system (BES) with surrounding electrode deployment into an anaerobic sludge reactor (ASR), was developed to improve azo dye decolorization. Results demonstrated that the AO7 decolorization and COD removal can be improved without co-substrate in such system. The kinetic rate of decolorization (0.54 h(-1)) in integrated system was 1.4-fold and 54.0-fold higher than that in biocathode BES (0.39 h(-1)) and ASR (0.01 h(-1)), respectively. COD can be removed after cleavage of azo bond, different from biocathode BES. The combined advantages of this integrated system were achieved by the cooperation of biocathode in modular BES and sludge in ASR. Biocathode was a predominant factor in AO7 decolorization, and anaerobic sludge contributed negligibly to AO7 reduction decolorization but mostly in the COD removal. These results demonstrated the great potential of integrating a BES module with anaerobic treatment process for azo dye treatment. (C) 2014 Elsevier Ltd. All rights reserved.
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