AWWA ACE65564

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 TiO₂.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 TiO₂ for Bacillus subtilisspores inactivation; and,during the TiO₂ reactions, turbidity isproduced during the process, this turbidity is veryhighly penetrated by the photonic flush.

Product Details

Edition:

Vol. - No.

Published:

06/01/2007

Number of Pages:

15

File Size:

1 file , 2.7 MB