Modelling of scattering phenomena for assessment of light absorption in a photo-reactor with heterogeneous media by Monte Carlo simulation I: A rectangular type photo-reactor

Cesur S. , YOKOTA T.

CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY, vol.14, no.1, pp.7-14, 2000 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 1
  • Publication Date: 2000
  • Page Numbers: pp.7-14


This work introduces the modelling of absorption and scattering phenomena in the heterogeneous media of a photo-reactor and the prediction of the maximum fraction of Light absorption that can be achieved. A new random walk model was proposed with two model parameters, cross sectional areas of absorption and scattering. The Monte Carlo approach was used for the simulation of the model. Isotropic and non-isotropic (forward, backward and side) scattering modes were considered. Any mode or any multiple combination of scattering can be set whenever one takes place. An absorption criterion was defined by comparing the model results with those of Schuster's infinite system. The model was verified experimentally and the agreement was satisfactory. For the experimental system, a heterogeneous medium was made using spherical silica particles and water, and was irradiated with parallel light beams from a laser light source. The model is capable of predicting light intensities and light absorptions.