Inactivation of 'Escherichia coli' by Titanium Dioxide Photocatalytic Oxidation

摘要

Titanium dioxide in the anatase crystalline form was used as a photocatalyst togenerate hydroxyl radicals in a flowthrough water reactor. Experiments were performed on pure cultures of Escherichia coli in dechlorinated tap water and a surface water sample to evaluate the disinfection capabilities of the reactor. In water devoid of significant amounts of inorganic-radical scavengers, rapid cell death was observed with both pure cultures and members of the indigenous flora in a natural water sample. (Copyright (c) 1993, American Society for Microbiology.)