DOI: 10.1016/j.watres.2018.03.019
Scopus记录号: 2-s2.0-85046040177
论文题名: Electrochemically modified dissolved organic matter accelerates the combining photodegradation and biodegradation of 17Α-ethinylestradiol in natural aquatic environment
作者: He H. ; Huang B. ; Fu G. ; Xiong D. ; Xu Z. ; Wu X. ; Pan X.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 137 起始页码: 251
结束页码: 261
语种: 英语
英文关键词: 17α-ethinylestradiol
; Biodegradation
; Dissolved organic matter
; Electrochemical modification
; Photodegradation
Scopus关键词: Biodegradation
; Biogeochemistry
; Biological materials
; Degradation
; Dissolution
; Excited states
; Irradiation
; Organic compounds
; Photolysis
; Wastewater treatment
; Water pollution
; Water treatment
; Biochemical degradation
; Dissolved organic matters
; Electrochemical modification
; Electrochemical treatments
; Ethinylestradiol
; Microbial transformation
; Natural aquatic environments
; Photochemical conversion
; Photodegradation
; dissolved organic matter
; ethinylestradiol
; quinone derivative
; water
; acceleration
; aquatic environment
; biodegradation
; dissolved organic matter
; electrochemistry
; irradiation
; microbial activity
; photodegradation
; transformation
; aquatic environment
; Article
; biodegradation
; cellular secretion
; chemical modification
; chemical structure
; controlled study
; electrochemistry
; electron
; fluorescence spectroscopy
; in vitro study
; irradiation
; MCF-7 cell line
; nonhuman
; photodegradation
; photolysis
; potentiometric titration
; priority journal
; Shewanella oneidensis
; spectrofluorometry
; ultraviolet spectroscopy
; waste water management
; bioremediation
; chemistry
; electrochemical analysis
; metabolism
; radiation response
; water pollutant
; Biodegradation, Environmental
; Electrochemical Techniques
; Ethinyl Estradiol
; Photolysis
; Water Pollutants, Chemical
英文摘要: The photochemical conversion and microbial transformation of pollutants mediated by dissolved organic matter (DOM), including 17α-ethinylestradiol (EE2), are often accompanied in natural water. However, there are few studies to explore the connection and mechanism between the two processes. This research aims to investigate the mechanism of DOM after electrochemically modification mediated EE2 combining photodegradation and biodegradation in the environment and it want to explain the natural phenomena of DOM after electrochemical advanced treatment entering the water environment mediated EE2 natural degradation. The results showed that combining photodegradation with biodegradation rates of EE2 mediated by DOM and electrochemically modified DOM (E-DOM) were promoted obviously. The efficiency of EE2 biodegradation was shown to be strongly correlated with electron accepting capacity (EAC) of DOM. Electrochemical modification can increase the EAC of DOM leading to EE2 biodegradation accelerated, and it also can form more triplet-state DOM moieties to promote the EE2 photodegradation in irradiation conditions, due to the increasing of quinone-type structures in DOM. Moreover, cell polymeric secretion (CPS) secreted from the microorganism could be stimulated to an excited state by irradiation, and that also accelerated EE2 degradation. Photolysis combined with biochemical degradation yielded less toxic degradation products. This study shows that the emission of DOM in wastewater after electrochemical treatment could accelerate estrogen degradation and play a positive role on the pollutant transformation in the environment. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112812
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China
Recommended Citation:
He H.,Huang B.,Fu G.,et al. Electrochemically modified dissolved organic matter accelerates the combining photodegradation and biodegradation of 17Α-ethinylestradiol in natural aquatic environment[J]. Water Research,2018-01-01,137