Modeling the photocatalytic oxidation of carboxylic acids on aqueous TiO2 suspensions and on immobilized TiO2-chitosan thin films in different reactor geometries irradiated by UVA or UVC light sources

Photocatalytic reactor models incorporating radiation transport parameters and intrinsic kinetic of photocatalytic decomposition single-compound mixtures oxalic (OA) formic acid (FA), in both slurry suspensions immobilized thin films, were validated two well-mixed annular photoreactors geometries irradiated with either UVA or UVC radiation. The six-flux absorption scattering model (SFM) predicted the field a titanium dioxide (TiO2 P25) catalyst suspension, local volumetric rate photon (LVRPA) at each point and, after integration, lumped VRPA. combining VRPA, kinetics describing adsorption OA FA material balance reacting species was fitted to experimental results FO TiO2 determine reaction parameters. Such then used average surface (SRPA) predict oxidation on non-porous TiO2–chitosan films glass plates immersed photoreactor. for photocatalysts degradation mineralization mixture them under diverse conditions. This study demonstrates systematic methodology determining water contaminants that can also be represent such slurries any photoreactor geometry.