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http://dx.doi.org/10.9713/kcer.2012.50.1.011

Disinfection of E.coli in Drinking Water by TiO2 Photocatalytic System  

Jung, Jin-Ah (School of Chemical Engineering.Solar Energy Research Center, Chonbuk National University)
Kwak, Do Hwan (School of Chemical Engineering.Solar Energy Research Center, Chonbuk National University)
Oh, Dae Woong (School of Chemical Engineering.Solar Energy Research Center, Chonbuk National University)
Park, Dong Min (School of Chemical Engineering.Solar Energy Research Center, Chonbuk National University)
Yang, O-Bong (School of Chemical Engineering.Solar Energy Research Center, Chonbuk National University)
Publication Information
Korean Chemical Engineering Research / v.50, no.1, 2012 , pp. 11-17 More about this Journal
Abstract
Disinfection of Escherichia coli (E. coli) in drinking water was investigated by using $TiO_2$ and $TiO_2-SiO_2$ based photocatalyst prepared by sol-gel method. The disinfection test was carried out in an annular flow reactor with circulating sterile water containing the photocatalysts powder under UV-A irradiation. The disinfection activity was proportional to the anatase`s intensity of crystalline peak of the $TiO_2$ photocatalysts. 100% disinfection of E.coli without endotoxin was achieved with $TiO_2$ coated photocatalytic system under UV-A irradiation within 2 h. However, toxic endotoxine was exist in the disinfection of E.colithe under UV-C irradiation even though 100% disinfection of E.colithe within 30 min, which suggest that $TiO_2$ coated photocatalytic system with UV-A is useful tool for the disinfection of E.coli in drinking water.
Keywords
Disinfection of E.coli; $TiO_2$ Photocatalyst; Toxic Endotoxine; $TiO_2-SiO_2$ Photocatalyst; Drinking Water;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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