DOI: 10.1016/j.watres.2018.06.071
Scopus记录号: 2-s2.0-85052557413
论文题名: Complete dechlorination and mineralization of pentachlorophenol (PCP) in a hydrogen-based membrane biofilm reactor (MBfR)
作者: Long M. ; Ilhan Z.E. ; Xia S. ; Zhou C. ; Rittmann B.E.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 134
结束页码: 144
语种: 英语
英文关键词: Aromatic ring activation
; Dechlorination
; Hydrogen (H2)
; Membrane biofilm reactor (MBfR)
; Pentachlorophenol (PCP)
; Sulfur cycling
Scopus关键词: Biodegradation
; Biofilms
; Bioreactors
; Bioremediation
; Carboxylation
; Chemical activation
; Dechlorination
; Groundwater
; Groundwater pollution
; Herbicides
; Hydrogen
; Nitrates
; Phenols
; Sulfur
; Sulfur compounds
; Water treatment
; Aromatic rings
; Contaminated groundwater
; Continuous operation
; Membrane biofilm reactor
; Microbial communities
; Pentachlorophenol (PCP)
; Priority pollutants
; Sulfur cycling
; Mineralogy
; bacterium
; biodegradation
; biomineralization
; bioreactor
; dechlorination
; groundwater pollution
; hydrogen
; membrane
; operations technology
; PCP
; phenolic compound
; pollutant removal
; sulfur cycle
; water treatment
; Azospira
; Desulfomicrobium
; Flavobacterium
; Thauera
; Xanthobacter
英文摘要: Complete biodegradation and mineralization of pentachlorophenol (PCP), a priority pollutant in water, is challenging for water treatment. In this study, a hydrogen (H2)-based membrane biofilm reactor (MBfR) was applied to treat PCP, along with nitrate and sulfate, which often coexist in contaminated groundwater. Throughout 120-days of continuous operation, almost 100% of up to 10 mg/L PCP was removed with minimal intermediate accumulation and in parallel with complete denitrification of 20 mg-N/L nitrate. PCP initially was reductively dechlorinated to phenol, which was then mineralized to CO2 through pathways that began with aerobic activation via monooxygenation by Xanthobacter and anaerobic activation via carboxylation by Azospira and Thauera. Sulfur cycling induced by SO4 2− reduction affected the microbial community: The dominant bacteria became sulfate-reducers Desulfomicrobium, sulfur-oxidizers Sulfuritalea and Flavobacterium. This study provides insights and a promising technology for bioremediation of water contaminated with PCP, nitrate, and sulfate. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112497
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Biodesign Swette Center for Environmental Biotechnology, Arizona State University, United States; 1001 S McAllister Ave, Tempe, AZ 85287, United States
Recommended Citation:
Long M.,Ilhan Z.E.,Xia S.,et al. Complete dechlorination and mineralization of pentachlorophenol (PCP) in a hydrogen-based membrane biofilm reactor (MBfR)[J]. Water Research,2018-01-01,144