Dramatic enhancement of solar disinfection (SODIS) of wild Salmonella sp. in PET bottles by H2O2 addition on natural water of Burkina Faso containing dissolved iron

Autor:	Sciacca, Frédéric1, Rengifo-Herrera, Juliàn A.1, Wéthé, Joseph2, Pulgarin, César1 cesar.pulgarin@epfl.ch
Předmět:	*Disinfection by-product *Photocatalysis *Salmonella *Hydrogen-ion concentration *Bacterial growth *Industrial contamination *Coliforms Hydrogen peroxide Surfaces (Technology) Solar system
Zdroj:	Chemosphere. Feb2010, Vol. 78 Issue 9, p1186-1191. 6p.
Abstrakt:	Abstract: Disinfection of surface water containing dissolved iron (0.3mgL−1) at natural neutral pH (∼7.5) was carried out via solar disinfection (SODIS) treatment in PET bottles with H2O2 (10mgL−1). Wild coliforms and Salmonella sp. were monitored for 6h of sunlight irradiation and 72h of dark post-treatment period. In our conditions, SODIS treatment could not avoid Salmonella sp. re-growth during dark storage, meanwhile the addition of 10mgL−1 of H2O2 showed a strong enhancement of the inactivation rate without any re-growth of both bacteria. Finally, total coliforms (Escherichia coli included) demonstrated to be an inappropriate indicator for monitoring bacterial contamination in water during solar disinfection processes. [Copyright &y& Elsevier]
Databáze:	GreenFILE
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