科研之友
微信
新浪微博
Facebook
分享链接
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.
- 出版日期2016-4
