Electricity production during the treatment of real electroplating wastewater containing Cr6+ using microbial fuel cell

被引：230

作者：

Li, Zhongjian ^{[1
]}

Zhang, Xingwang ^{[1
]}

Lei, Lecheng ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Environm Pollut Control Technol, Hangzhou 310028, Peoples R China

来源：

PROCESS BIOCHEMISTRY | 2008年 / 43卷 / 12期

基金：

美国国家科学基金会;

关键词：

Microbial fuel cell (MFC); Electroplating wastewater; Chromium; Electricity generation; XPS; SEM;

D O I：

10.1016/j.procbio.2008.08.005

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Microbial fuel cell (MFC) was employed to dispose Cr6+ in real electroplating wastewater and generate electricity simultaneously. The experiments were carried out in a dual-chamber MFC. Under the condition of pH 2 and using graphite paper as the cathode electrode chromium removal and power density were highest. Moreover, increasing initial concentration of Cr6+ could enhance the power density. The results indicated that when treating a real electroplating wastewater containing Cr6+ with the initial concentration of 204 ppm in the MFC, the maximum power density of 1600 mW/m(2) was generated at a columbic efficiency of 12%. In addition, 99.5% Cr6+ and 66.2% total Cr were removed through reduction Of Cr2O72- to Cr2O3 precipitating on the surface of cathode electrode. MFC was proved to be a promising technology for removing Cr6+ from electroplating wastewater. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1352 / 1358

页数：7

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