Numerical Study of the Simultaneous Oxidation of NO and SO2 by Ozone

Bo Li, Jinyang Zhao, Junfu Lu
2015 International Journal of Environmental Research and Public Health  
This study used two kinetic mechanisms to evaluate the oxidation processes of NO and SO2 by ozone. The performance of the two models was assessed by comparisons with experimental results from previous studies. The first kinetic mechanism was a combined model developed by the author that consisted of 50 species and 172 reactions. The second mechanism consisted of 23 species and 63 reactions. Simulation results of both of the two models show under predictions compared with experimental data. The
more » ... esults showed that the optimized reaction temperature for NO with O3 ranged from 100~200 °C. At higher temperatures, O3 decomposed to O2 and O, which resulted in a decrease of the NO conversion rate. When the mole ratio of O3/NO was greater than 1, products with a higher oxidation state (such as NO3, N2O5) were formed. The reactions between O3 and SO2 were weak; as such, it was difficult for O3 to oxidize SO2.
doi:10.3390/ijerph120201595 pmid:25642689 pmcid:PMC4344682 fatcat:53u7cwtzlfhevmayarnduyw5n4