Two-dimensional modeling of an externally irradiated slurry photoreactor

Giovanni Palmisano, Vittorio Loddo, Vincenzo Augugliaro

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A batch cylindrical photocatalytic reactor, externally irradiated by 16 UV fluorescent lamps and containing a stirred slurry of polycrystalline TiO2, was modeled by coupling a modified LangmuirHinshelwood kinetics together with a two-dimensional light intensity field. The radiation field has been determined on the main assumptions of diffuse radiation, isotropic scattering and negligible backward reflected photon flow. The model has been applied to the photocatalytic oxidation of organic substrates which do not undergo homogeneous photochemical degradation. The model is characterized by the following four parameters: the kinetic constants of substrate adsorption, desorption and degradation and the exponent of the power law expressing the kinetics dependence on the light intensity. The model constants may be determined by applying a simple least-squares best fitting procedure.

Original languageBritish English
Pages (from-to)675-685
Number of pages11
JournalInternational Journal of Chemical Reactor Engineering
Issue number2
StatePublished - Jun 2013


  • Externally irradiated photoreactor
  • Hinshelwood kinetics
  • Langmuir
  • Photoreactor modeling


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