Enhancing the Electricity Generation and Nitrate Removal of Microbial Fuel Cells With a Novel Denitrifying Exoelectrogenic Strain EB-1

doi:10.3389/fmicb.2018.02633

	Enhancing the Electricity Generation and Nitrate Removal of Microbial Fuel Cells With a Novel Denitrifying Exoelectrogenic Strain EB-1
	Jin, Xiaojun 1,2; Guo, Fei 1; Liu, Zhimei1,2 ; Liu, Yuan1 ; Liu, Hong1,3
刊名	FRONTIERS IN MICROBIOLOGY
	2018-11-09
卷号	9 页码:10
关键词	denitrifying exoelectrogens Mycobacterium sp. microbial fuel cells electron transfer low COD/N ratios organic materials
ISSN号	1664-302X
DOI	10.3389/fmicb.2018.02633
通讯作者	Liu, Yuan(liuyuan@cigit.ac.cn) ; Liu, Hong(liuhong@cigit.ac.cn)
英文摘要	Microbial fuel cells (MFCs) have been tentatively applied for wastewater treatment, but the presence of nitrogen, especially nitrate, induces performance instability by changing the composition of functional biofilms. A novel denitrifying exoelectrogenic strain EB-1, capable of simultaneous denitrification and electricity generation and affiliated with Mycobacterium sp., was isolated from the anodic biofilm of MFCs fed with nitrate containing medium. Polarization curves and cyclic voltammetry showed that strain EB-1 could generate electricity through a direct electron transfer mechanism with a maximum power density of 0.84 +/- 0.05 W m(-2). Additionally, anodic denitrification, as a concurrent metabolism, was demonstrated with an efficient removal rate of 0.66 +/- 0.01 kg N m(-3) d(-1) at a COD/N ratio of 3.5 +/- 0.3. Importantly, voltage output was not negatively influenced by nitrate, indicating that the concurrent process of nitrate removal and electricity generation was a limitation of the electron donor rather than an inhibition of the system. Furthermore, various organic materials were successfully utilized as anode donors for strain EB-1, and demonstrated the exciting performances in terms of simultaneous denitrification and electricity generation. Mycobacterium sp. EB-1 thus expands the diversity of exoelectrogens and contributes to the potential applications of MFC for simultaneous energy recovery and wastewater treatment.
资助项目	National Science Foundation of China (NSFC)[51525805] ; National Science Foundation of China (NSFC)[51727812] ; National Science Foundation of China (NSFC)[51578526] ; Chongqing Research Program of Basic Research and Frontier Technology[cstc2015jcyjBX0063]
WOS研究方向	Microbiology
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000449638800001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/6890]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Liu, Yuan; Liu, Hong
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Guangzhou Univ, Minist Educ, Inst Environm Res Greater Bay, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Jin, Xiaojun,Guo, Fei,Liu, Zhimei,et al. Enhancing the Electricity Generation and Nitrate Removal of Microbial Fuel Cells With a Novel Denitrifying Exoelectrogenic Strain EB-1[J]. FRONTIERS IN MICROBIOLOGY,2018,9:10.
APA	Jin, Xiaojun,Guo, Fei,Liu, Zhimei,Liu, Yuan,&Liu, Hong.(2018).Enhancing the Electricity Generation and Nitrate Removal of Microbial Fuel Cells With a Novel Denitrifying Exoelectrogenic Strain EB-1.FRONTIERS IN MICROBIOLOGY,9,10.
MLA	Jin, Xiaojun,et al."Enhancing the Electricity Generation and Nitrate Removal of Microbial Fuel Cells With a Novel Denitrifying Exoelectrogenic Strain EB-1".FRONTIERS IN MICROBIOLOGY 9(2018):10.