DOI: 10.1016/j.watres.2017.12.024
Scopus记录号: 2-s2.0-85038007391
论文题名: Efficient bioconversion of organic wastes to high optical activity of L-lactic acid stimulated by cathode in mixed microbial consortium
作者: Xue G. ; Lai S. ; Li X. ; Zhang W. ; You J. ; Chen H. ; Qian Y. ; Gao P. ; Liu Z. ; Liu Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 1
结束页码: 10
语种: 英语
英文关键词: Cathodic electro-fermentation
; Food waste
; Lactic acid
; Mixed microbial consortium
; Waste activated sludge
Scopus关键词: Cathodes
; Electrodes
; Fermentation
; Optical materials
; Organic chemicals
; Wastes
; Fermentation process
; Fermentation products
; Food waste
; Level distribution
; Microbial communities
; Mixed microbial consortium
; Standard hydrogen electrodes
; Waste activated sludges
; Lactic acid
; lactic acid
; pyruvic acid
; activated sludge
; biomass
; biotransformation
; electrode
; fermentation
; microbial activity
; microbial community
; optimization
; organic compound
; solid waste
; activated sludge
; Article
; biotransformation
; concentration (parameters)
; controlled study
; electric potential
; electron transport
; fermentation
; fermentation optimization
; genus
; microbial community
; microbial consortium
; microbial metabolism
; nonhuman
; optical rotation
; organic waste
; power supply
; priority journal
英文摘要: Lactic acid is one of the emerging top biomass derived platform chemicals that can be fermented from organic wastes. This study evaluated the potential of Cathodic Electro-Fermentation (CEF) as a novel approach to enhance the yield of high optical activity (OA) of L-lactic acid from organic wastes using mixed microbial consortium. The fermentation process was stimulated through the cathode applied with −100 mV versus standard hydrogen electrode (SHE), which contributed to 4.73 times higher lactic acid productivity (0.6578 g L−1 h−1) compared to that in the open circuit control (0.1392 g L−1 h−1), and an improved OA of L-lactic acid was also observed (42.3% vs. 3.6% of the open circuit control). The study elucidated that the optimal voltage at −100 mV promoted the conversion of pyruvate to L-lactate by 77.9% compared to the Blank, which triggered the generation of L-lactic acid to occur rapidly even at low concentration of pyruvate. The significant variation of microbial community in family- and genus-level distributions were observed in CEF system. Furthermore, the open-circuit operation test demonstrated that the cathode providing in-situ electron supply was essential to achieve high efficient bioconversion of organic wastes to lactic acid. Our work highlights the feasibility of CEF to steer high value-added fermentation products deriving from organic wastes by the mixed microbial consortium. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113016
Appears in Collections: 气候减缓与适应
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作者单位: College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China
Recommended Citation:
Xue G.,Lai S.,Li X.,et al. Efficient bioconversion of organic wastes to high optical activity of L-lactic acid stimulated by cathode in mixed microbial consortium[J]. Water Research,2018-01-01,131