Decomposition of dimethyl sulfide with non-thermal plasma induced by dielectric barrier discharge

Decomposition of dimethyl sulfide (DMS) by non-thermal plasma induced by dielectric barrier discharge (DBD) in a wire-tube reactor was investigated. A new type of high pulse voltage source with Blumlein pulse forming network (BPEN) was adopted in the experiments, and the results show that the DMS could be removed effectively in the DBD reactor. The effects of the important parameters influencing the DMS removal efficiency, such as the pulse frequency, peak voltage, initial concentration of DMS and gas flow rate, were studied. The suitable pulse frequency for decomposition of DMS was found to be 100 Hz, and when the initial concentration of DMS is 906 mg&middotm-3 and gas flow rate is 1000 mL&middotmin-1, using the suitable pulse frequency mentioned, the DMS removal efficiency can reach 100% and the energy yield is 0.864 mg&middotkJ-1. It was also found that when the gas flow rate increases from 1000 mL&middotmin-1 to 2000 mL&middotmin-1, the removal efficiency of DMS with initial concentration of 525 mg&middotm-3 decreases from 100% to 85.7%, while the energy yield increases from 0.706 mg&middotkJ-1 to 1.210 mg&middotkJ-1.