Inactivation of fecal bacteria in drinking water by solar heating.

Applied and Environmental Microbiology
T JoyceR M Conroy

Abstract

We report simulations of the thermal effect of strong equatorial sunshine on water samples contaminated with high populations of fecal coliforms. Water samples, heavily contaminated with a wild-type strain of Escherichia coli (starting population = 20 x 10(5) CFU/ml), are heated to those temperatures recorded for 2-liter samples stored in transparent plastic bottles and exposed to full Kenyan sunshine (maximum water temperature, 55 degrees C). The samples are completely disinfected within 7 h, and no viable E. coli organisms are detected at either the end of the experiment or a further 12 h later, showing that no bacterial recovery has occurred. The feasibility of employing solar disinfection for highly turbid, fecally contaminated water is discussed.

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Citations

Mar 5, 2005·Applied and Environmental Microbiology·F Méndez-HermidaK G McGuigan
Jun 18, 2005·Journal of Applied Microbiology·R Khaengraeng, R H Reed
Jan 13, 2010·The American Journal of Tropical Medicine and Hygiene·Hipólito Gómez-CousoElvira Ares-Mazás
Jun 10, 2000·Letters in Applied Microbiology·R H ReedV Meyer
Nov 9, 2000·Letters in Applied Microbiology·R J SmithM R Barer
Jan 7, 2005·Journal of Food Protection·Marina Steele, Joseph Odumeru
Mar 25, 2008·Applied and Environmental Microbiology·M BoyleK G McGuigan
Jan 28, 2010·International Journal of Environmental Health Research·Silvie M Kraemer, Hans-Joachim Mosler
Feb 10, 2004·Applied and Environmental Microbiology·Laurie F CaslakeJavad Tavakoli
Apr 7, 2004·Applied and Environmental Microbiology·D Carey WalkerBrita Sheehan
Jan 30, 1999·Applied and Environmental Microbiology·N Safapour, R H Metcalf
Aug 10, 2021·Journal of Water and Health·Atena Amirsoleimani, Gail M Brion

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