Trickling filter in a biocathode microbial fuel cell for efficient wastewater treatment and energy production

被引:0
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作者
CAO Xin [1 ,2 ]
LIANG Peng [2 ]
SONG Xin Shan [1 ]
WANG Yu Hui [1 ]
Qiu Yong [2 ]
HUANG Xia [2 ]
机构
[1] 不详
[2] State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University
[3] 不详
[4] State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University
[5] 不详
关键词
D O I
暂无
中图分类号
TM911.45 [生物化学燃料电池、微生物燃料电池]; X703 [废水的处理与利用];
学科分类号
摘要
Aiming to reduce the energy input, oxygen supply by trickling filter was employed in a biocathode microbial fuel cell(MFC) to examine its performance of electricity production and sewage treatment. During batch operation, trickling MFC(TMFC) could start and aerate effectively(DO>3.60 mg/L). During continuous operation, TMFC produced a maximum current density of 71.8 A/m3 and maximum power density of 26.2 W/m3 under the hydraulic retention time(HRT) of 10 h. By increasing the HRT to 15 h, 90.6% of COD and 99.0% of ammonia in simulated domestic sewage were efficiently removed and the maximum power density was 19.4 W/m3. Continuous purification of real municipal wastewater achieved 85.9% of COD removal rate and 91.6%of ammonia removal rate. Sequencing result of biocathodic microorganisms indicated that it consisted of four major classes and the dominant class was γ-proteobacteria, which accounted for up to 84.38%. The dominant genus was Acinetobacter, which accounted for 57.81%. The phylogenetic tree showed different relationships among the 19 species of biocathode microorganisms and the predominant species was Acinetobacter calcoaceticus.
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页码:1703 / 1709
页数:7
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