Radiation field modeling in a photocatalytic monolith reactor

Md Moazzem Hossain, Gregory Raupp

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


The light intensity profile inside a photocatalytic monolith reactor was studied using an incidence model based from the basic principles of heat radiation. The mathematical model takes the form of integral equations which show that light intensity profiles are controlled by the aspect ratio and film reflectivity. For identical aspect ratio channels, model predictions show that light intensity profiles for square and circular channels are quite similar. The radiation field gradients are large, with relatively little light penetrating beyond a length equivalent to three channel widths. This implies that, for monoliths with typical commercial aspect ratios, a large fraction of the coated channel wall is not effectively irradiated.

Original languageEnglish (US)
Pages (from-to)3771-3780
Number of pages10
JournalChemical Engineering Science
Issue number22
StatePublished - Nov 1998


  • Air purification
  • Photocatalytic oxidation
  • Reactor modeling
  • Titania photocatalysts
  • Ultraviolet light

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering


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