Decolorization of an azo dye Orange G in microbial fuel cells using Fe(II)-EDTA catalyzed persulfate

被引：51

作者：

Niu, Cheng-Gang ^{[1
]}

Wang, Ying

Zhang, Xue-Gang

Zeng, Guang-Ming

Huang, Da-Wei

Ruan, Min

Li, Xiang-Wei

机构：

[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 126卷

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Microbial fuel cell; Fe(II)-EDTA catalyzed persulfate; Orange G decolorization; Maximum power density; IN-SITU REMEDIATION; DEGRADATION; OXIDATION; AGENTS; IRON; TCE; ION;

D O I：

10.1016/j.biortech.2012.09.001

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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.

引用

页码：101 / 106

页数：6

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