Industrial photochemistry VIII: Light repartition in heterogeneous cylindrical photoreactors

Abstract Several models of light repartition in homogeneous absorbing media have already been proposed in the literature. They are based on the general assumption that the light path is a straight line. However, for systems which both scatter and partially absorb light, this principle of optics is no longer realistic. As the scattering by a particle cannot be expressed by an analytical relationship, we have treated the modelling of light repartition in a scattering and absorbing medium using a Monte Carlo method. It is shown that the model is in satisfactory agreement with experimental. results.