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Heterotrophic anodic denitrification improves carbon removal and electricity recovery efficiency in microbial fuel cells

文献类型：期刊论文

作者Jin, Xiaojun1,2,3; Guo, Fei2; Ma, Weiqi1,2,3; Liu, Yuan1,2; Liu, Hong1,2,4
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2019-08-15
卷号370页码:527-535
关键词Microbial fuel cells Heterotrophic denitrification Electricity recovery Microbial community Electron donor
ISSN号1385-8947
DOI10.1016/j.cej.2019.03.023
通讯作者Liu, Yuan(liuyuan@cigit.ac.cn) ; Liu, Hong(liuhong@cigit.ac.cn)
英文摘要At the anode of a microbial fuel cell (MFC), denitrifying bacteria can coexist with exoelectrogens, enabling an MFC to achieve simultaneous nitrate reduction and electricity generation by the oxidization of organic matter. In this study, an anodic denitrifying MFC (MFC-D) was constructed by incorporating heterotrophic denitrification. This was compared to a control, MFC without denitrification (MFC-C). The results showed that MFC-D exhibited higher chemical oxygen demand (COD) removal and power density than MFC-C. Microbial community analysis showed that the proportion of bacteria of the genus Geobacter significantly decreased from 72.8% in MFC-C to 29.4% in MFC-D, and that denitrifiers in MFC-D increased by 36.8% in comparison with those in MFC-C. The COD used for denitrification was calculated to be 3.7 +/- 0.3 g COD/g NO3--N when MFC-D was fed with different COD/N ratios. The optimal proportion of COD/N in the MFC-D system was 5:1, at which the highest coulombic efficiency (CE) of electricity generation and anodic denitrification were obtained. The maximum voltage output was not inhibited at a low COD/N, but the cycle duration was decreased with decreasing COD/N. Additionally, the bacterial community was more diverse when complex organics were used as an electron donor or in a single-chamber MFC, which subsequently altered the electricity recovery and denitrification performance. This study provides a new strategy to improve the performance of MFCs in actual applications by the addition of denitrifiers to the anodic biofilms.
资助项目National Science Foundation of China[51525805] ; National Science Foundation of China[51727812] ; National Science Foundation of China[51578526]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000467387200048
出版者ELSEVIER SCIENCE SA
源URL[http://119.78.100.138/handle/2HOD01W0/7791]  
专题水污染过程与治理研究中心
通讯作者Liu, Yuan; Liu, Hong
作者单位1.Chinese Acad Sci, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Guangzhou Univ, Inst Environm Res Greater Bay, Minist Educ, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou 510006, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Jin, Xiaojun,Guo, Fei,Ma, Weiqi,et al. Heterotrophic anodic denitrification improves carbon removal and electricity recovery efficiency in microbial fuel cells[J]. CHEMICAL ENGINEERING JOURNAL,2019,370:527-535.
APA Jin, Xiaojun,Guo, Fei,Ma, Weiqi,Liu, Yuan,&Liu, Hong.(2019).Heterotrophic anodic denitrification improves carbon removal and electricity recovery efficiency in microbial fuel cells.CHEMICAL ENGINEERING JOURNAL,370,527-535.
MLA Jin, Xiaojun,et al."Heterotrophic anodic denitrification improves carbon removal and electricity recovery efficiency in microbial fuel cells".CHEMICAL ENGINEERING JOURNAL 370(2019):527-535.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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