Photocatalytic Bacterial Disinfection in a Partition System

摘要：

　　Photocatalytic disinfection has been well-studied for water treatment.However,the post-separation ofphotocatalyst remains a major challenge for practical application.This study developed a novel method for photocatalytic disinfection,which used a partition system to retain the photocatalyst.Cadmium indium sulfate (CdIn2S4) coupled with regenerated cellulose membrane gave the best performance.4 log-reduction of a Gram-negative bacterium,Escherichia coli,and 5 log-reduction of a Gram-positive bacterium,Microbacterium Barkeri,(initial cell density 2× 105 cells/mL) were achieved within 4 and 6 h,respectively.Scavenger study revealed that H2O2 is the major reactive species for bacterial inactivation in the partition system.The study provides an alternative cost-effective method for the application of photocatalysis in water disinfection.

关键词： Photocatalysis Bacterial disinfection Partition system

作者: Tsz Wai NG Po Keung WONG Wing Kei HO

作者单位: School of Life Sciences The Chinese University of Hong Kong Shatin Hong Kong SAR,China Nano and Advanced Materias Insitute Limited Hong Kong,Hong Kong Science Park,Shatin,Hong Kong SAR,Ch

会议类型: 国际会议

会议名称: Conference on Environmental Pollution and Public Health (2012年环境污染与大众健康学术会议(CEPPH2012))

会议地点: 上海

会议语种:英文

页码: 223-227

在线出版日期: 2012-08-09（万方平台首次上网日期，不代表论文的发表时间）