A dual-chamber microbial fuel cell with conductive film-modified anode and cathode and its application for the neutral electro-Fenton process

文献类型： 外文期刊

第一作者： Feng, Chunhua

作者： Feng, Chunhua;Liu, Haiyang;Lang, Xuemei;Fan, Shuanshi;Li, Fangbai

作者机构：

关键词： Microbial fuel cell (MFC);Electro-Fenton;Conductive film;Polypyrrole;Bio-electrochemical systems (BES)

期刊名称：ELECTROCHIMICA ACTA （ 影响因子：6.901； 五年影响因子：6.016 ）

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年卷期：

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收录情况： SCI

摘要： This study reports on the modification of the anode and the cathode in a dual-chamber microbial fuel cell (MFC) with a polypyrrole (PPy)/anthraquinone-2,6-disulfonate (AQDS) conductive film to boost its performance and the application of the MFC to drive neutral electron-Fenton reactions occurring in the cathode chamber. The MFC equipped with the conductive film-coated anode and cathode delivered the maximum power density of 823 mWcm~(-2) that was one order of magnitude larger than that obtained in the MFC with the unmodified electrodes. This was resulted from the enhanced activities of microbial metabolism in the anode and oxygen reduction in the cathode owing to the decoration of both electrodes with the PPy/AQDS composite. The MFC with the modified electrodes resulted in the largest rate of H_2O_2 generation in the cathode chamber by the two-electron reduction of O_2. The increase in the concentration of H_2O_2 was beneficial for the enhancement in the amount of hydroxyl radicals produced by the reaction of H_2O_2 with Fe~(2+), thus allowing an increased oxidative ability of the electro-Fenton process towards the decolorization and mineralization of an azo dye (i.e., Orange II) at pH 7.0.

分类号： TQ15`O64

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