Sequential reduction/oxidation of azo dyes in a three-dimensional biofilm electrode reactor
文献类型：期刊论文
| 作者 | Liu, Shentan1,2; Feng, Xiaojuan3; Gu, Feng1; Li, Xianning1; Wang, Yujue2 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2017-11-01 |
| 卷号 | 186页码:287-294 |
| 关键词 | Biofilm electrode reactor Azo dye Decolorization Biocathode Electron shuttle |
| ISSN号 | 0045-6535 |
| DOI | 10.1016/j.chemosphere.2017.08.001 |
| 通讯作者 | Li, Xianning(lxn@seu.edu.cn) |
| 英文摘要 | By combining sequential anaerobic-aerobic reactor and penetrable cathode-anode operation, a novel anaerobic/aerobic sequencing three-dimensional biofilm electrode reactor (3D-BER) was developed to evaluate the degradation of azo dye reactive brilliant red X-3B (RBRX-3B). In the bottom cathodic region, anaerobic reductive conditions and H-2 were produced for the bioreduction of azo dyes; in the top anodic region, aerobic oxidative conditions and O-2 were produced for the mineralization of dye intermediates. Due to the supply of electrical power, electrons could be mediated via electrolysis of water or directly transfer between electrodes and microbe cells. The biofilm immobilized on the surface of the cathode utilized electrode or H-2 as electron donors and accelerated the rate of RBRX-3B reduction, and the decolorization rate was significantly increased 2.6-3.7 fold, reaching at 2.52-3.39 mol/m(3)/d at an energy consumption of 0.15 kWh/mol RBRX-3B. RBRX-3B was reductively cleaved into aromatic amines at the biocathode and these amines were effectively removed at the bioanode. Acute toxicity tests showed that the intermediates of RBRX-3B were more toxic when compared with the initial influent, and the 3D-BER effluent exhibited much lower toxicity (5% inhibition of bioluminescence of Vibrio fisheri) than the electrochemical and biological effluent (65% and 30% inhibition, respectively). These findings suggest the novel 3D-BER may provide a promising alternative to remove azo dyes in dyeing wastewater. (C) 2017 Elsevier Ltd. All rights reserved. |
| WOS关键词 | BRILLIANT RED X-3B ; TEXTILE WASTE-WATER ; ELECTRICAL-STIMULATION ; DECOLORIZATION ; REMOVAL ; DEGRADATION ; TECHNOLOGIES ; WASTEWATERS ; NITRATE ; SYSTEM |
| 资助项目 | National Nature Science Foundation of China[21277024] ; China Postdoctoral Science Foundation[2016M601049] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000411846900034 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Nature Science Foundation of China ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/62366]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Xianning |
| 作者单位 | 1.Southeast Univ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China 2.Tsinghua Univ, Sch Environm, Beijing Key Lab Emerging Organ Contaminants Contr, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shentan,Feng, Xiaojuan,Gu, Feng,et al. Sequential reduction/oxidation of azo dyes in a three-dimensional biofilm electrode reactor[J]. CHEMOSPHERE,2017,186:287-294. |
| APA | Liu, Shentan,Feng, Xiaojuan,Gu, Feng,Li, Xianning,&Wang, Yujue.(2017).Sequential reduction/oxidation of azo dyes in a three-dimensional biofilm electrode reactor.CHEMOSPHERE,186,287-294. |
| MLA | Liu, Shentan,et al."Sequential reduction/oxidation of azo dyes in a three-dimensional biofilm electrode reactor".CHEMOSPHERE 186(2017):287-294. |
入库方式： OAI收割
来源：地理科学与资源研究所
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