蜂窝状ZSM-5沸石协同低温等离子体净化含硫恶臭气体  

Purification of sulfur-containing malodorous gases by honeycomb ZSM-5 zeolite combined with non-thermal plasma

作　　者：张瑞前 邱祁 张启杭 秦勇 阮诗婷 吴伟祥[1] ZHANG Ruiqian;QIU Qi;ZHANG Qihang;QIN Yong;RUAN Shiting;WU Weixiang(College of Environmental&Resource Sciences,Zhejiang University,Hangzhou Zhejiang 310058;College of Electrical Engineering,Zhejiang University,Hangzhou Zhejiang 310027)

机构地区：[1]浙江大学环境与资源学院,浙江杭州310058 [2]浙江大学电气工程学院,浙江杭州310027

出　　处：《环境污染与防治》2024年第2期151-158,共8页Environmental Pollution & Control

基　　金：浙江省重点研发计划项目(No.2021C03024)。

摘　　要：采用蜂窝状ZSM-5沸石协同低温等离子体净化5种典型含硫恶臭气体,通过沸石硅铝比、锰改性、放电电压参数的优化探究最佳工艺参数与处理效果。结果表明:降低硅铝比、锰改性利于提升蜂窝状ZSM-5沸石对含硫恶臭气体的整体吸附效率,增大硅铝比、适当增加锰负载量、提高放电电压则利于提升蜂窝状ZSM-5沸石协同低温等离子体对含硫恶臭气体的去除效率,其提升机制可能与沸石比表面积、外表面积和Mn^(3+)负载催化有关。在硅铝比为70(摩尔比)、锰负载量为10%(质量分数)、7.5 kV的条件下,锰改性蜂窝状ZSM-5沸石协同低温等离子体对含硫恶臭气体的去除效率均大于95%,比输入能量仅为2.3 J/L。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 Mn^(3+).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.

关 键 词：低温等离子体 蜂窝状ZSM-5沸石 硅铝比 含硫恶臭气体 锰 

分 类 号：X512[环境科学与工程—环境工程]