DISINFECTION OF E. coli CONTAMINATED WATER USING TUNGSTEN TRIOXIDE-BASED PHOTOELECTROCATALYSIS

被引：0
|
作者：
Scott-Emuakpor, Efetobor [1 ,2 ]
Paton, Graeme I. [1 ]
Todd, Malcolm J. [2 ]
Macphee, Donald E. [2 ]
机构：
[1] Univ Aberdeen, Inst Biol & Environm Sci, Cruickshank Bldg, Aberdeen AB24 3UU, Scotland
[2] Univ Aberdeen, Sch Nat & Comp Sci, Meston Bldg, Aberdeen AB24 3UE, Scotland
来源：
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL | 2016年 / 15卷 / 04期
关键词：
disinfection; E; coli; photoelectrocatalysis; tungsten trioxide; wastewater; VISIBLE-LIGHT; PHOTOCATALYTIC DISINFECTION; ESCHERICHIA-COLI; BACTERICIDAL ACTIVITY; TITANIUM-DIOXIDE; PATHOGENIC MICROORGANISMS; POSTIRRADIATION EVENTS; TIO2; PHOTOCATALYSIS; FILM ELECTRODES; DRINKING-WATER;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Semi-conductor oxide enhanced photocatalysis is a sustainable technology suitable for disinfection of water contaminated with pathogens. Disinfection of Escherichia coli was investigated using an immobilized thin film tungsten trioxide (WO3) photocatalyst in a visible light-driven photoelectrocatalytic batch cell (PECB). Disinfection efficiency was monitored under dark electrocatalytic, photolytic and photoelectrocatalytic conditions and assessed using a culture-based approach. Optimal disinfection efficiency (>99 % within 15 minutes) occurred when the WO3 catalyst was illuminated under closed circuit conditions. Non-detection of colony forming units showed no re-growth of the pathogen during post-irradiation studies, indicating cell death. The WO3 photocatalyst is a potentially useful disinfection technology as its utilization of visible parts of the solar spectrum optimizes solar energy for treatment of contaminated waters.
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收藏
页码：899 / 903
页数：5
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