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Formation of chlorinated species through reaction of SO2 with NaClO2 powder and their role in the oxidation of NO and Hg0 |
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| Authors: | Youngchul Byun Ian P Hamilton Xin Tu Dong Nam Shin |
| Institution: | 1. School of Environmental Science and Engineering, Pohang University of Science and Technology, Hyoja-dong, Pohang, Kyoungbuk, 790-784, Republic of Korea 2. Department of Chemistry, Wilfrid Laurier University, Waterloo, Ontario, N2L3C5, Canada 3. Department of Electrical Engineering and Electronics, University of Liverpool, Brownlow Hill, Liverpool, L69 3GJ, UK 4. Environmental Research Department, Research Institute of Industrial Science and Technology, Hyoja-dong, Pohang, Kyoungbuk, 790-784, Republic of Korea |
| Abstract: | This study examines gaseous chlorinated species generated from the reaction of sulfur dioxide (SO2) with sodium chlorite powder (NaClO2(s)) to obtain insight into the propensity of this process to enhance NO and Hg0 oxidation. A packed bed reactor containing NaClO2(s) was used and the reaction temperature was set to 130 °C. Initially, we determined that the presence of SO2 enhances the oxidation of NO and Hg0 by reaction with NaClO2(s). We then introduced NO2 into the gas mixture as a radical scavenger and determined that the chlorinated species generated by the reaction of SO2 with NaClO2(s) are OClO, Cl, ClO, and Cl2. Based on these results, we suggest that such gaseous chlorinated ones are responsible for the enhancement of NO and Hg0 oxidation. |
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