DOI: 10.1016/j.watres.2017.12.013
Scopus记录号: 2-s2.0-85038097850
论文题名: Pilot investigation on formation of 2,4,6-trichloroanisole via microbial O-methylation of 2,4,6-trichlorophenol in drinking water distribution system: An insight into microbial mechanism
作者: Zhang K. ; Cao C. ; Zhou X. ; Zheng F. ; Sun Y. ; Cai Z. ; Fu J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 11
结束页码: 21
语种: 英语
英文关键词: 2,4,6-Trichloroanisole
; Biofilm
; Drinking water distribution system
; Microbial community
; Microbial O-Methylation
; O-Methyltransferase
Scopus关键词: Alkylation
; Biofilms
; Flow velocity
; Methylation
; Microorganisms
; RNA
; Stainless steel
; Water
; Water distribution systems
; Water supply systems
; 2 ,4 ,6-Trichloroanisole
; 2 ,4 ,6-Trichlorophenol (2 ,4 ,6-TCP)
; Heterotrophic plate counts
; High-throughput sequencing
; Microbial communities
; O-methylation
; O-Methyltransferase
; Pseudo-first order kinetic model
; Potable water
; 2,4,6 trichloroanisole
; 2,4,6 trichlorophenol
; anisole derivative
; chlorine
; DNA
; drinking water
; polyethylene
; RNA 16S
; stainless steel
; unclassified drug
; biofilm
; distribution system
; dose-response relationship
; drinking water
; enzyme activity
; methylation
; microbial activity
; microbial community
; phenolic compound
; pipe
; reaction kinetics
; steel
; Article
; biofilm
; controlled study
; flow rate
; heterotrophy
; high throughput sequencing
; kinetics
; methylation
; microbial activity
; microbial community
; nonhuman
; plate count
; precursor
; priority journal
; quorum sensing
; temperature
; water supply
; Bacteria (microorganisms)
英文摘要: Taste & odor (T&O) problems in drinking water are always complained by customers. Recent studies have indicated biofilms in drinking water distribution system (DWDS) are always ignored as potential sources of T&O compounds. In this paper, the formation of 2,4,6-trichloroanisole (2,4,6-TCA), one of the dominant T&O compounds, was investigated in a pilot-scale DWDS. The addition of precursor 2,4,6-trichlorophenol (2,4,6-TCP) of 0.2 mg/L induced the formation of 2,4,6-TCA with a maximum yield of ∼400 ng/L, and the formation kinetics can be described by a pseudo-first-order kinetic model. Effects of water distribution factors such as pipe material, temperature, flow velocity, and residual chlorine on the formation of 2,4,6-TCA were evaluated, and the pipe material was found to have the most remarkable effect. Ductile iron and stainless steel pipes produced much more 2,4,6-TCA than polyethylene (PE) pipe. The biofilm microbial communities on the three types of pipe walls were then comprehensively analyzed by heterotrophic plate count and 16S rRNA/ITS1 genes high throughput sequencing. The links between the 2,4,6-TCA formation potential and the microbial activity in genus and enzymatic levels in DWDS have been revealed for the first time. According to the characteristics of microbial assemblages of producing 2,4,6-TCA, quorum-sensing (QS) bacterial signaling system and extracellular DNA (eDNA) may be two promising targets for biofilm treatment and 2,4,6-TCA control in DWDS. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113022
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang 310058, China; Department of Environmental Science & Engineering, Fudan University, Shanghai, 200433, China
Recommended Citation:
Zhang K.,Cao C.,Zhou X.,et al. Pilot investigation on formation of 2,4,6-trichloroanisole via microbial O-methylation of 2,4,6-trichlorophenol in drinking water distribution system: An insight into microbial mechanism[J]. Water Research,2018-01-01,131