A study of electron-shuttle mechanism in Klebsiella pneumoniae   based-microbial fuel cells

doi:10.1007/s11434-009-0563-y

CORC > 北京大学 > 环境科学与工程学院

	A study of electron-shuttle mechanism in Klebsiella pneumoniae based-microbial fuel cells
	Deng LiFang ; Li FangBai ; Zhou ShunGui ; Huang DeYin ; Ni JinRen
刊名	科学通报英文版
	2010
关键词	microbial fuel cells electron shuttle cyclic voltammetric Klebsiella pneumoniae L17 ELECTRICITY-GENERATION REDOX MEDIATORS BIOFUEL CELLS REDUCTION DEGRADATION OXIDATION MANGANESE
DOI	10.1007/s11434-009-0563-y
英文摘要	In microbial fuel cell (MFC), the rate of electron transfer to anode electrode is a key intrinsic limiting factor on the power output of MFCs. Using Klebsiella pneumoniae (K. pneumoniae) strain L17 as biocatalyst, we studied the mechanism of electron shuttle via self-producing mediator in a cubic air-chamber MFC. To eliminate the influence of biofilm mechanism, the anode electrode was coated with microfiltration membrane (0.22 mu m). Data showed that the microfiltration membrane coated and uncoated MFCs achieved the maximum voltage outputs of 316.2 and 426.2 mV after 270 and 120 h, respectively. When the medium was replaced in MFCs that had the highest power generation, the power output dropped by 62.1% and 8.8%, and required 120 and 48 h to resume the original level in the coated and uncoated MFCs, respectively. The results suggested an electron-shuttle mechanism rather than biofilm mechanism was responsible for electricity generation in the membrane coated MFC. Cyclic voltammetric measurements demonstrated the presence of an electrochemical active compound produced by K. pneumoniae strain L17, which was identified to be 2,6-di-tert-butyl-p-benzoquinon (2,6-DTBBQ) by GC-MS. 2,6-DTBBQ, as a recyclable electron shuttle, could transfer electrons between K. pneumoniae L17 and the anode electrode.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000273978700018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Multidisciplinary Sciences; SCI(E); 24; ARTICLE; 1; 99-104; 55
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/245673]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Deng LiFang,Li FangBai,Zhou ShunGui,et al. A study of electron-shuttle mechanism in Klebsiella pneumoniae based-microbial fuel cells[J]. 科学通报英文版,2010.
APA	Deng LiFang,Li FangBai,Zhou ShunGui,Huang DeYin,&Ni JinRen.(2010).A study of electron-shuttle mechanism in Klebsiella pneumoniae based-microbial fuel cells.科学通报英文版.
MLA	Deng LiFang,et al."A study of electron-shuttle mechanism in Klebsiella pneumoniae based-microbial fuel cells".科学通报英文版 (2010).