Predictive radiation field modeling for fluidized bed photocatalytic reactors

摘要: Abstract A predictive model of the radiation distribution for fluidized bed photocatalytic reactors was proposed and solved by means Monte Carlo approach coupled with ray tracing technique. This considers interaction between TiO 2 -coated spheres photons, taking into account shadowing effect beads, reflection on surface spheres, absorption in films. is completely does not use any adjustable parameter. Modeling results indicate a strong influence expansion distribution, beads being main cause this dependence. Increasing improves uniformity reactor. Nevertheless, an excessively expanded would reduce efficiency reactor because transmittance increases fraction photons leave without absorbed spheres. The evaluated laboratory-scale that designed built elimination organic pollutants from water streams. glass diameter 1.18 mm were used as photocatalyst. validated comparing predicted values effective experimental measured under different expansions. performance also assessed experimentally, showing good degradation formic acid compound.