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This powerpoint presentation begins by providing background information on waterborne pathogens of relevance including Cryptosporidium and Bacillus subtilisspores. The objective of the study was toevaluate the germicidal effects ofcatalyzed-solar radiation undersequential disinfection programs usingFe(II) and TiOsub2/sub.Three experimental setups are presented and include: solar radiation alone; solar photocatalysis; and, sequential disinfection. Results are presented along with conclusions that found that: Bacillus subtilis spores exhibit considerableresistance to batch solar disinfection processes;solar photocatalysis has the potential to inactivatesome of the most resistant waterborne pathogens;limited exposure to photocatalysis generatesmoderate synergism in free chlorine inactivation of B.subtilis spores; Fe(II) is more effective than TiOsub2/sub for Bacillus subtilisspores inactivation; and,during the TiOsub2/sub reactions, turbidity isproduced during the process, this turbidity is veryhighly penetrated by the photonic flush.

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Edition: Vol. - No. Published: 06/01/2007 Number of Pages: 15File Size: 1 file , 2.7 MB