Bioelectricity generation, contaminant removal and bacterial community distribution as affected by substrate material size and aquatic macrophyte in constructed wetland-microbial fuel cell
Bioelectricity generation, contaminant removal and bacterial community distribution as affected by substrate material size and aquatic macrophyte in constructed wetland-microbial fuel cell
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人工湿地微生物燃料电池中受基质材料尺寸和水生植物影响的生物发电、污染物去除和细菌群落分布
DOI：
10.1016/j.biortech.2017.08.191
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发表时间：
2017
影响因子：
11.4
通讯作者：
Dong Guoqiang
中科院分区：
文献类型：
--
作者：
Wang Junfeng;Song Xinshan;Wang Yuhui;Bai Junhong;Bai Heng;Yan Dengming;Cao Yin;Li Yihao;Yu Zhilei;Dong Guoqiang
将微生物燃料电池与人工湿地相结合是一种新型的污水处理生物电收集技术。研究了基质材料粒径和水生植物种类对CW-MFC生物产电、除污和微生物群落分布的影响。具有较大填料尺寸的种植的CW-MFC显示出电化学活性细菌（β-变形菌门）的相对丰度的显著促进，这可能导致CW-MFC中生物发电的增加（8.91 mW m−2）。此外，在第八次循环中，在具有较小填料尺寸的未植入CW-MFC中观察到电压的急剧降低。而填料粒径较小的CW-MFC对COD和NO3-N的去除率最高，分别为86.7%和87.1%，这与微生物多样性密切相关。一般来说，驯化外生产电菌作为优势微生物在阳极室的种植CW-MFC与较大的填料尺寸可以促进生物发电过程中的废水处理。
Integrating microbial fuel cell with constructed wetland (CW-MFC) is a novel way to harvest bioelectricity during wastewater treatment. In this study, the bioelectricity generation, containment removal and microbial community distribution in CW-MFC as affected by substrate material sizes and aquatic macrophyte were investigated. The planted CW-MFC with larger filler size showed a significant promotion of the relative abundance of electrochemically active bacteria (beta-Proteobacteria), which might result in the increase of bioelectricity generation in CW-MFC (8.91 mW m−2). Additionally, a sharp decrease of voltage was observed in unplanted CW-MFC with smaller filler size in Cycle eight. However, the peak COD (86.7%) and NO3-N (87.1%) removal efficiencies were observed in planted CW-MFC with smaller filler size, which was strongly related to the biodiversity of microorganisms. Generally, the acclimation of exoelectrogens as dominant microbes in the anode chamber of planted CW-MFC with larger filler size could promote the bioelectricity generation during wastewater treatment.