The effect of immobilized catalyst structure on the degradation of chemical and biological contaminants in simulated solar photocatalytic water purification

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Courtesy of IWA Publishing

The performance of different configurations of titanium dioxide-coated foam supports as photocatalysts in an enhanced solar disinfection system for drinking water treatment was evaluated, using the reduction of methylene blue, 1-4-dioxane, and Escherichia coli as performance indicators. Reactors with immobilized catalysts were able to match or surpass the performance of a suspension configuration due to effective mass transport and association between the analyte and the foam. Performance was related to the pore size of the foam, with the ideal pore size varying between target contaminants.

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