Inactivation of Escherichia coli by titanium dioxide photocatalytic oxidation.
Titanium dioxide in the anatase crystalline form was used as a photocatalyst to generate 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.
Drinking Water Research Division, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268.
J C
JC
Ireland
P
P
Klostermann
E W
EW
Rice
R M
RM
Clark
D004926:Escherichia coli / Q000187:drug effects* / Q000378:metabolism / Q000528:radiation effects; D005609:Free Radicals; D006878:Hydroxides; D017665:Hydroxyl Radical; D010084:Oxidation-Reduction; D010777:Photochemistry; D014025:Titanium / Q000494:pharmacology*
D005609:Free Radicals; D006878:Hydroxides; C009495:titanium dioxide; D017665:Hydroxyl Radical; D014025:Titanium