标题：Acclimated sediment microbial fuel cells from a eutrophic lake for the in situ denitrificationprocess作者：Yuan Wang,Jiangjun Hu, Longmian Wang,Dan Shan, Xu Wang,Yimin Zhang,Xuhui Mao,Lei Xing, Dihua Wang

来源出版物：RSC Advances卷：83期：6 页码：80079–80085 DOI：10.1039/C6RA16510A出版年：2016

摘要：Sediment microbial fuel cells (SMFCs) with various external resistances were acclimated at the north ofLakeTaihufor two months. Then, each SMFC was transferred to a container and operated in batch mode for evaluating its electrochemical and denitrification performances. The nitrate removal efficiencies of SMFCs that were connected to the external resistances of 510, 100, 51, 10 and 1Ωwere 12%, 20%, 32%, 42.1% and 60%, respectively. Conversely, the nitrate concentration increased by 0.05 mg L-1 for the SMFC with 1000Ωexternal resistance. The microbial community of the biocathode in the SMFC with 1Ωexternal resistance was determined. Proteobacteria (48.04%), Bacteroidetes (9.87%) and Chloroflexi (9.8%) were identified as the dominant phyla. The microbial community analysis and half-cell tests revealed that the acclimated biocathode could simultaneously promote a denitrification reaction and an oxygen reduction reaction. In addition, Nitrosomonadales and Nitrospirales on the biocathode facilitated the ammonia oxidation reaction which caused a mixed potential. The mixed potential was enhanced by increasing ammonia concentration and decreased the biocathode performance.

文献类型：Article

语种：English

通讯作者地址：Xu Wang; School of Resource and Environmental Sciences, Wuhan University, No. 129 Luoyu Road,Wuhan430079,China.

电子邮件地址：xu.wang@whu.edu.cn

地址：

[Yuan Wang,Jiangjun Hu,Xu Wang,Xuhui Mao,Dihua Wang]SchoolofResourceand Environmental Sciences,WuhanUniversity,No. 129 Luoyu Road,Wuhan430079,China.

[Longmian Wang,Yimin Zhang]bNanjing Institute of Environmental Sciences, Ministry of Environmental Protection, No. 8 Jiang Wang Miao Street, Nanjing 210042, China

[Dan Shan]cSino-Japan Friendship Center for Environmental Protection,No. 1 Yu Hui Nan Road, Beijing100029,China

[Lei Xing]InstituteofGreenChemistry and Chemical Technology,JiangsuUniversity, No. 301 Xuefu Road,Zhenjiang, 212013,China

ISSN：2046-2069

IF：3.289