Mercury pollution is one of the deadly environmental and health concerns today, with the largestamount (40%) of man-made emissions generated from coal-fired power plants. US EPA hasrecently announced that these power plants must reduce their emissions by 2007. An increasingnumber of power-plants are getting equipped with selective catalytic reduction (SCR) systems, toreduce NOx emissions.This paper describes an experimental study that measures the effect of oxidizing agents on Hgoxidation and retention in a selective catalytic reduction (SCR) system, using a commercialhoneycomb vanadium-titania catalyst. A kinetic model accounting for reactions taking place in anSCR system and mass transfer has been developed and is presented to better understand theexperimental results. Fitting unknown kinetic parameters to the data and generation of accurateresults shows that the model may be robust and predictive.
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