  The potential of a combined ozone O3 ultraviolet (UV) light reactor for
gas-phase oxidation of flue gas pollutants has been evaluated in this work. For
this, numerical simulations of a continuously stirred tank reactor (CSTR) have
been performed for the analysis of sulfur dioxide SO2 removal. Chemical
kinetics have been coupled with modeling of the radiation intensity
distribution produced by a UV lamp with five different radiation models. A grid
convergence study and an optimization of the number of discrete point light
sources employed for some of the radiation models was carried out. The effect
of residence time and reactor size on the removal of SO2 have also been
analyzed. Overall, results for the abatement of SO2 in an O3-UV reactor under
optimized conditions suggest that this approach is suitable for sustainable air
cleaning applications.
