Purification of sulfur-containing malodorous gases by honeycomb ZSM-5 zeolite combined with non-thermal plasma
Five typical sulfur-containing malodorous gases were purified by honeycomb ZSM-5 zeolite combined with non-thermal plasma,and the optimal process parameters and treatment effects were explored through the optimization of the zeolite silica-alumina ratio,manganese modification and discharge voltage parameters.The results showed that the overall adsorption efficiency of honeycomb ZSM-5 zeolite on sulfur-containing malodorous gases could be improved by decreasing the silica-alumina ratio and manganese modification,while the removal efficiency of honeycomb ZSM-5 zeolite combined with non-thermal plasma on the sulfur-containing malodorous gases could be improved by increasing the silica-alumina ratio,appropriately increasing the manganese loading,and raising the discharge voltage.The enhancement mechanism might be related to the specific surface area,the external surface area of zeolites,and the catalytic loading of Mn3+.The removal efficiencies of manganese-modified honeycomb ZSM-5 zeolite combined with non-thermal plasma on sulfur-containing malodorous gases were all greater than 95％at a silica-aluminum ratio of 70(molar ratio),a manganese loading of 10％(mass fraction),and 7.5 kV of discharge voltage,and the specific energy input was only 2.3 J/L.
万方数据
维普
