DOI: 10.1016/j.watres.2018.03.078
Scopus记录号: 2-s2.0-85047385903
论文题名: Anaerobic treatment of N, N-dimethylformamide-containing wastewater by co-culturing two sources of inoculum
作者: Kong Z. ; Li L. ; Kurihara R. ; Kubota K. ; Li Y.-Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 139 起始页码: 228
结束页码: 239
语种: 英语
英文关键词: Co-culture
; Enzyme
; Facultative anaerobes
; Hydrolysis
; Methanogenic degradation
; N, N-dimethylformamide
Scopus关键词: Bacteria
; Biodegradation
; Bioreactors
; Dimethylformamide
; Enzymes
; Hydrolysis
; Organic solvents
; Sludge digestion
; Wastewater treatment
; Anaerobic conditions
; Anaerobic treatments
; Co-cultures
; Facultative anaerobes
; Microbial communities
; N ,N-Dimethylformamide
; Stoichiometric equation
; Submerged anaerobic membrane bioreactors
; Anaerobic digestion
; dimethylamine
; formic acid
; hydrolase
; methane
; n,n dimethylformamide
; n,n dimethylformamide
; activated sludge
; anoxic conditions
; biodegradation
; bioreactor
; carboxylic acid
; enzyme activity
; experimental study
; facultative behavior
; hydrolysis
; inoculation
; methanogenesis
; methanogenic bacterium
; nitrogen compound
; stoichiometry
; wastewater treatment
; activated sludge
; anaerobic bacterium
; anaerobic cocultured sludge
; anaerobic digestion sludge
; Article
; biodegradability
; coculture
; degradation
; domestication
; fermentation
; inoculation
; metabolism
; methanogenesis
; methanogenic bacterium
; methylotrophic bacterium
; microbial community
; priority journal
; sludge
; stoichiometry
; symbiosis
; ultra performance liquid chromatography
; waste water management
; anaerobic growth
; bioreactor
; coculture
; metabolism
; microbiology
; waste water
; water pollutant
; Anaerobiosis
; Bacteria, Anaerobic
; Bioreactors
; Coculture Techniques
; Dimethylformamide
; Methane
; Waste Water
; Water Pollutants, Chemical
英文摘要: The complete methanogenic degradation of N, N-dimethylformamide (DMF) was achieved in this study. Initially, DMF was found to be feebly degradable by a lab-scale submerged anaerobic membrane bioreactor (SAnMBR) using normal anaerobic digestion sludge (ADS) even after 120-day's culturing. However, aerobic DMF-degrading activated sludge (AS) was rapidly cultivated in a continuous aeration reactor (CAR). A specially designed anaerobic co-cultured sludge (ACS) made by artificially mixing AS with ADS was successfully domesticated by a long term repeated batch experiment. The results demonstrated that ACS could effectively degrade over 5000 mg L−1 DMF for methane recovery. The metabolic pathway and stoichiometric equation of DMF methanogenic degradation were also revealed and verified in detail. It was confirmed that under the anaerobic condition, with the help of enzyme, DMF converts into dimethylamine and formic acid, and the intermediates are effectively fermented through methylotrophic/hydrogenotrophic methanogenesis. Analysis of the microbial community suggested that some facultatively anaerobic bacteria played the key roles in methanogenic degradation due to their DMF-hydrolyzing ability. By co-culturing two sources of inoculum under the anaerobic condition, the symbiosis of facultatively anaerobic DMF-hydrolyzing bacteria and methylotrophic/hydrogenotrophic methanogens makes methanogenic degradation of DMF available. This study also provides a novel sludge cultivation method for anaerobic treatment of degradation-resistant organics. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112769
Appears in Collections: 气候减缓与适应
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作者单位: Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-06, Sendai, Miyagi 9808579, Japan
Recommended Citation:
Kong Z.,Li L.,Kurihara R.,et al. Anaerobic treatment of N, N-dimethylformamide-containing wastewater by co-culturing two sources of inoculum[J]. Water Research,2018-01-01,139