Improved azo dye decolorization in an advanced integrated system of bioelectrochemical module with surrounding electrode deployment and anaerobic sludge reactor

被引：36
作者：
Kong, Fanying [1 ]
Wang, Aijie [1 ,2 ]
Ren, Hong-Yu [1 ]
机构：
[1] Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water resource & Environm, Harbin 150090, Peoples R China
[2] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 175卷
基金：
美国国家科学基金会;
关键词：
Integrated system; Bioelectrochemical system (BES); Anaerobic sludge reactor (ASR); Decolorization; Azo dye; WASTE-WATER TREATMENT; MICROBIAL FUEL-CELLS; CARBON-BASED MATERIALS; ELECTRICITY-GENERATION; MEMBRANE BIOREACTOR; BIOCATHODE; DECHLORINATION; 4-CHLOROPHENOL; DESIGN;
D O I：
10.1016/j.biortech.2014.10.091
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
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.
引用
收藏
页码：624 / 628
页数：5
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