DOI: 10.1016/j.watres.2018.08.010
Scopus记录号: 2-s2.0-85053153908
论文题名: Electrochemical inactivation of bacteria with a titanium sub-oxide reactive membrane
作者: Liang S. ; Lin H. ; Habteselassie M. ; Huang Q.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 172
结束页码: 180
语种: 英语
英文关键词: Microfiltration
; Pathogens
; Reactive electrochemical membrane
; Water disinfection
Scopus关键词: Anodes
; Current density
; Disinfection
; Disintegration
; Escherichia coli
; Membranes
; Pathogens
; Proteins
; Scanning electron microscopy
; Titanium oxides
; Viruses
; Water filtration
; Water treatment
; Decentralized treatments
; Different treatments
; Electrochemical membranes
; Escherichia coli (E. coli)
; Extracellular proteins
; High current densities
; Micro-filtration membranes
; Water disinfections
; Microfiltration
; bacterium
; concentration (composition)
; disinfection
; electrochemical method
; electrode
; filtration
; membrane
; pathogen
; titanium
; water treatment
; Escherichia coli
英文摘要: A reactive electrochemical membrane (REM) system was developed with titanium suboxide microfiltration membrane serving as the filter and the anode, and was examined to inactivate Escherichia coli (E. coli) in water at various current densities. After passing through the membrane filter, the concentration of E. coli decreased from 6.46 log CFU/mL to 0.18 log CFU/mL. The REM operation and effects, including membrane pressure, anode potential, protein leakage, and cell morphology, were characterized under different treatment conditions. It was found that several mechanisms, including membrane filtration, external electrical field influence, and direct oxidation, functioned in concert to lead to bacteria removal and inactivation, and direct oxidation likely played the major role. As revealed by scanning electron microscope and extracellular protein analysis, high current density and voltage caused severe cell damage that resulted in partial or complete cell disintegration. The removal of a model virus, bacteriophage MS2, was also investigated at the current density of 10 mA cm−2 and achieved 6.74 log reduction compared to the original concentration (1011 PFU/mL). In addition to illustration of mechanisms, this study may provide a potentially promising approach that is suitable for decentralized treatment to meet dispersed water disinfection needs. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112456
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: College of Agricultural and Environmental Sciences, Department of Crop and Soil Sciences, University of Georgia, Griffin, GA 30223, United States; Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China; AECOM Environment, Atlanta, GA 30309, United States
Recommended Citation:
Liang S.,Lin H.,Habteselassie M.,et al. Electrochemical inactivation of bacteria with a titanium sub-oxide reactive membrane[J]. Water Research,2018-01-01,145