DOI: 10.1016/j.watres.2018.04.026
Scopus记录号: 2-s2.0-85047413542
论文题名: A novel process for volatile fatty acids production from syngas by integrating with mesophilic alkaline fermentation of waste activated sludge
作者: Rao Y. ; Wan J. ; Liu Y. ; Angelidaki I. ; Zhang S. ; Zhang Y. ; Luo G.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 139 起始页码: 372
结束页码: 380
语种: 英语
英文关键词: Mesophilic alkaline fermentation
; Microbial community analysis
; Syngas
; Volatile fatty acids production
; Waste activated sludge
Scopus关键词: Activated sludge process
; Alkalinity
; Fermentation
; Methane
; Microorganisms
; Synthesis gas
; Acetate concentrations
; Hydrogenotrophic methanogenesis
; Hydrogenotrophic methanogens
; Mesophilic
; Microbial community analysis
; Microbial community composition
; Syn-gas
; Waste activated sludges
; Volatile fatty acids
; acetic acid
; carbon monoxide
; hydrogen
; methane
; volatile fatty acid
; carbon monoxide
; hydrogen
; volatile fatty acid
; activated sludge
; bioactivity
; biological production
; community dynamics
; concentration (composition)
; fatty acid
; fermentation
; gas
; inhibition
; methanogenic bacterium
; microbial community
; waste technology
; activated sludge
; Article
; biotransformation
; feasibility study
; fermentation
; mesophilic bacterium
; Methanobacteriales
; methanogenesis
; methanogenic bacterium
; Methanomicrobiales
; Methanosaeta
; microbial community
; nonhuman
; pH
; priority journal
; waste
; bacterium
; bioreactor
; fermentation
; metabolism
; sewage
; Methanobacteriales
; Bacteria
; Bioreactors
; Carbon Monoxide
; Fatty Acids, Volatile
; Fermentation
; Hydrogen
; Hydrogen-Ion Concentration
; Methane
; Sewage
英文摘要: The present study proposed and demonstrated a novel process for the bioconversion of syngas (mainly CO and H2) to valuable volatile fatty acids (VFA) by integrating with mesophilic alkaline fermentation of waste activated sludge (WAS). The results showed that although pH 9 was suitable for VFA production from WAS, 62.5% of the consumed CO was converted to methane due to the presence of hydrogenogenic pathway for CO conversion. The increase of pH from 9 to 9.5 inhibited the methane production from CO because of the possible presence of only acetogenic pathway for CO conversion. However, methane was still produced from H2 contained in syngas through hydrogenotrophic methanogenesis, and around 32–34% of the consumed syngas was converted to methane. At both pH 9 and 9.5, methane was produced by hydrogenotrophic methanogens Methanobacteriales. Further increase of pH to 10 effectively inhibited methane production from syngas, and efficient VFA (mainly acetate with the concentration of around 135 mM) production by simultaneous conversion of syngas and WAS was achieved. High acetate concentrations (>150 mM) were shown to have serious negative effects on the conversion of syngas. The addition of syngas to the mesophilic alkaline fermentation of WAS at pH 10 not only resulted in the enrichment of some known bacteria related with syngas conversion, but also changed the microbial community compositions for the fermentation of WAS. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112737
Appears in Collections: 气候减缓与适应
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作者单位: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Department of Environmental Engineering, Technical University of Denmark, Kgs Lyngby, DK-2800, Denmark; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
Recommended Citation:
Rao Y.,Wan J.,Liu Y.,et al. A novel process for volatile fatty acids production from syngas by integrating with mesophilic alkaline fermentation of waste activated sludge[J]. Water Research,2018-01-01,139