Substrate removal and electricity generation in a membrane-less microbial fuel cell for biological treatment of wastewater
Substrate removal and electricity generation in a membrane-less microbial fuel cell for biological treatment of wastewater
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DOI：
10.1016/j.biortech.2013.03.172
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发表时间：
2013-06-01
影响因子：
11.4
通讯作者：
Xiao, Bo
中科院分区：
文献类型：
--
作者：
Wang, Haiping;Jiang, Sunny C.;Xiao, Bo
微生物燃料电池近年来由于其将有机废水转化为可再生电能的前景而受到欢迎。在这项研究中，无膜MFC与生物阴极的开发，以评估其在发电的性能，同时处理废水。以2g/天乙酸盐的连续流进料的MFC产生30 mW/m2的功率密度和245 mA/m2的电流密度。基质降解效率（COD）达到75.9%，其中48.7%归因于厌氧过程和27.2%归因于好氧过程。使用16 S rDNA pryosequencing的微生物聚生体的测序分析显示，在一个月的操作后，在阳极中的类杆菌属的优势，而在阴极室中的微生物群落中的γ-变形菌和β-变形菌占主导地位。库仑效率变化从19.8%到58.1%，使用不同的乙酸浓度，表明功率密度可以进一步提高通过电子转移细菌的积累。(C)2013爱思唯尔有限公司保留所有权利。
Microbial fuel cells have gained popularity in recent years due to its promise in converting organic wastewater into renewable electrical energy. In this study, a membrane-less MFC with a biocathode was developed to evaluate its performance in electricity generation while simultaneously treating wastewater. The MFC fed with a continuous flow of 2 g/day acetate produced a power density of 30 mW/m(2) and current density of 245 mA/m(2). A substrate degradation efficiency (SDE) of 75.9% was achieved with 48.7% attributed to the anaerobic process and 27.2% to the aerobic process. Sequencing analysis of the microbial consortia using 16S rDNA pryosequencing showed the predominance of Bacteroidia in the anode after one month of operation, while the microbial community in the cathode chamber was dominated by Gamma-proteobacteria and Beta-proteobacteria. Coulombic efficiencies varied from 19.8% to 58.1% using different acetate concentrations, indicating power density can be further improved through the accumulation of electron-transferring bacteria. (C) 2013 Elsevier Ltd. All rights reserved.