Substrates and pathway of electricity generation in a nitrification-based microbial fuel cell

被引:25
作者
Chen, Hui [1 ]
Zheng, Ping [1 ]
Zhang, Jiqiang [1 ]
Xie, Zuofu [1 ,2 ]
Ji, Junyuan [3 ]
Ghulam, Abbas [1 ,4 ]
机构
[1] Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China
[2] Zhejiang Univ Sci & Technol, Hangzhou 310023, Zhejiang, Peoples R China
[3] Ocean Univ China, Qingdao 266100, Peoples R China
[4] Univ Gujrat, Dept Chem Engn, Gujrat, Pakistan
基金
高等学校博士学科点专项科研基金;
关键词
Nitrogen removal; Microbial fuel cell; Nitrification; Electrogenesis pathway; AMMONIA-OXIDATION; HYDROXYLAMINE; NITROGEN; PERFORMANCE;
D O I
10.1016/j.biortech.2014.02.081
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Nitrification-based microbial fuel cell (N-MFC) is a novel inorganic microbial fuel cell based on nitrification in the anode compartment. So far, little information is available on the substrates and pathway of N-MFC. The results of this study indicated that apart from the primary nitrification substrate (ammonium), the intermediates (hydroxylamine and nitrite) could also serve as anodic fuel to generate current, and the end product nitrate showed an inhibitory effect on electricity generation. Based on the research, a pathway of electricity generation was proposed for N-MFC: ammonium was oxidized first to nitrite by ammonia-oxidizing bacteria (AOB), then the nitrite in anolyte and the potassium permanganate in catholyte constituted a chemical cell to generate current. In other words, the electricity generation in N-MFC was not only supported by microbial reaction as we expected, but both biological and electrochemical reactions contributed. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:208 / 214
页数:7
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