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Water Res. 2005 Mar;39(5):877-83. Epub 2005 Jan 21.

Solar and photocatalytic disinfection of protozoan, fungal and bacterial microbes in drinking water.

Author information

1
Department of Infection, Immunity & Inflammation, Maurice Shock Building, School of Medicine, University of Leicester, Leicester LE1 9HN, UK.

Abstract

The ability of solar disinfection (SODIS) and solar photocatalytic (TiO(2)) disinfection (SPC-DIS) batch-process reactors to inactivate waterborne protozoan, fungal and bacterial microbes was evaluated. After 8 h simulated solar exposure (870 W/m(2) in the 300 nm-10 microm range, 200 W/m(2) in the 300-400 nm UV range), both SPC-DIS and SODIS achieved at least a 4 log unit reduction in viability against protozoa (the trophozoite stage of Acanthamoeba polyphaga), fungi (Candida albicans, Fusarium solani) and bacteria (Pseudomonas aeruginosa, Escherichia coli). A reduction of only 1.7 log units was recorded for spores of Bacillus subtilis. Both SODIS and SPC-DIS were ineffective against the cyst stage of A. polyphaga.

PMID:
15743634
DOI:
10.1016/j.watres.2004.11.023
[Indexed for MEDLINE]

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