Degradation of nitrobenzene-containing wastewater by a microbial-fuel-cell-coupled constructed wetland
Degradation of nitrobenzene-containing wastewater by a microbial-fuel-cell-coupled constructed wetland
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DOI：
10.1016/j.ecoleng.2017.12.018
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发表时间：
2018-03
影响因子：
3.8
通讯作者：
Ting Xie;Zhaoqian Jing;Jing Hu;Pengyi Yuan;L. Yali;Shiwei Cao
中科院分区：
文献类型：
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作者：
Ting Xie;Zhaoqian Jing;Jing Hu;Pengyi Yuan;L. Yali;Shiwei Cao
构建了单室无膜无膜空气阴极微生物燃料电池耦合人工湿地系统(MFC-CW)，实现了硝基苯类废水的同时发电处理。对空白对照(CK)、微生物燃料电池(MFC)和MFC-CW三种装置进行了研究。通过电学特性评价了衬底降解与发电量之间的内在联系。电极间距为13 cm时，MFC-CW的电压最大。MFC和MFC-CW的最大功率密度分别为0.59mW/m2和1.53mW/m2。当进水浓度与化学需氧量之比为1：16，水力停留时间为24 h时，反应器对硝基苯的去除效率最高可达92.89%，对废水中的化学需氧量的去除效率在67.92%~78.30%之间，具有较好的处理效果。
A single chamber membrane-less air cathode microbial fuel cell coupled constructed wetland (MFC-CW) was constructed to treat nitrobenzene-containing wastewater and generate electricity simultaneously. Three devices of blank control (CK), microbial fuel cell (MFC) and MFC-CW were investigated. The inherent relationship between substrate degradation and electricity generation were evaluated by the electronic characteristics. The maximum voltage of MFC-CW was obtained at the electrode spacing of 13 cm. The maximum power density of MFC and MFC-CW were 0.59 and 1.53 mW/m2respectively. The maximum nitrobenzene removal rate of 92.89% was attained in the MFC-CW when the concentration ratio of nitrobenzene to chemical oxygen demand (COD) was 1:16 with hydraulic retention time at 24 h. The COD removal rate was between 67.92% and 78.30%, and the MFC-CW was efficient for COD degradation.