Difference in Conversions Between Dimethyl Sulfide and Methanethiol in a Cold Plasma Environment |
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| Authors: | Cheng-Hsien Tsai Wen-Jhy Lee Chuh-Yung Chen Perng-Jy Tsai Guor-Cheng Fang Minliang Shih |
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| Affiliation: | (1) Department of Chemical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan;(2) Department of Environmental Engineering, National Cheng Kung University, Tainan, Taiwan;(3) Department of Environmental Engineering and Health, Hung Kuang Institute of Technology, Taichung, Taiwan;(4) Department of Environmental Engineering, National Cheng Kung University, Tainan, Taiwan |
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| Abstract: | This study compared the conversion of two malodorous substances, dimethyl sulfide (CH3SCH3, DMS) and methanethiol (CH3SH) in a cold plasma reactor. The DMS and CH3SH were successfully destroyed at room temperature. DMS decomposed less than CH3SH at the same conditions. In oxygen-free condition, CS2 and hydrocarbons were the major products, while SO2 and COx were main compounds in oxygen-rich environments. The DMS/Ar plasma yielded more hydrocarbons and less CS2 than that of CH3SH/Ar plasma. In the CH3SH/O2/Ar plasma, rapid formation of SO and CO resulted in the yields much more amounts of SO2 and CO2 than those in the DMS/O2/Ar plasma; and remained only a trace of total hydrocarbons, CH2O, CH3OH, CS2, and OCS. The major differences between the reaction mechanisms of DMS and CH3SH were also proposed and discussed. |
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| Keywords: | DMS CH3SH RF plasma conversion decomposition |
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