Understanding the role of Fe(III)/Fe(II) couple in mediating reductive transformation of 2-nitrophenol in microbial fuel cells

文献类型： 外文期刊

第一作者： Li, Fangbai

作者： Li, Fangbai;Liu, Liang;Tong, Hui;Feng, Chunhua;Feng, Chunhua;Liu, Yongye;Yue, Xianjun;Sun, Kewen

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关键词： 2-Nitrophenol;Electrochemical mediator;Ferrous iron;Microbial fuel cell;Reductive transformation

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

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收录情况： SCI

摘要： The Fe(III)/Fe(II) couple can play a significant role in the abiotic reduction of 2-nitrophenol (2-NP) at the cathode chamber of a microbial fuel cell (MFC). Experimental results demonstrate that Fe(II) addition to the cathode chamber contributes to a significant increase in the reaction rate of 2-NP removal and the power performance of MFC. Observed pseudo first-order rate constants and power densities are heavily dependent on the identity of the Fe(II)-complexing ligands. The Fe(II) complex coordinated with citrate results in the highest rate constant up to 0.12h~(-1) as compared to other organically complexed iron species including Fe(II)-EDTA, Fe(II)-acetate and Fe(II)-oxalate, and iron species uncomplexed with any organic ligands. In addition, the presence of Fe(II)-citrate species leads to a maximum volumetric power density of 1.0Wm~(-3), which is the highest value among those obtained with other iron species for the similar MFC system.

分类号： Q

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