Absorbed radiation and kinetic model in photocatalysis by TiO₂

Abstract The current work studies a novel and affordable methodology to estimate quantify the photon flux absorbed amount of light that leaves from an illuminated photocatalytic system with TiO 2 suspended in water. To achieve it, new parameter B F S ? w a t $BF{S}_{\lambda }^{wat}$ is defined presented. It indicates, for every wavelength, fraction incoming radiation which not by system. was estimated means actinometric experiments jacketed reactor model based on Beer–Lambert law. For wavelengths below 388 nm concentrations between 0.05 g L ?1 , experimental values were 0.77 0.27. In second part work, simple kinetic model, breaks down effect incident constant, developed. this, previously determined, included model. This tested degradation 2,4-dichlorophenol under different concentrations. fits satisfactorily constant k ? ap [mol·L Einstein ] obtained, independent catalyst loaded achievement may be very useful easy initial comparison, design or scaling up reactors similar geometry.