Abstract

Inactivation of Bacillus subtilis spores was carried out using solar-driven Advanced Oxidation Processes (AOPs) alone and coupled with free chlorine in sequential processes. Experimental results showed that Fenton-like processes are more efficient under the tested conditions than heterogeneous photocatalytic processes using suspended titanium dioxide. Experimental data were fitted using modified Chick-Watson kinetics and the accumulated energy as the radiation dose needed for spore deactivation. It was demonstrated that the deactivation of B. subtilis spores using chlorine can be enhanced by primary treatment with photocatalysis. This study also suggests that AOPs could be an effective alternative to control the occurrence of highly resistant waterborne pathogens.

Recommended Citation

Bandala, Erick R.; Corona-Vasquez, Benito; Guisar, Raúl; and Uscanga, Melesio (2009) "Deactivation of Highly Resistant Microorganisms in Water Using Solar Driven Photocatalytic Processes," International Journal of Chemical Reactor Engineering: Vol. 7: A7.
Available at: http://www.bepress.com/ijcre/vol7/A7