Experimental study on toluene removal by a two-stage plasma-biofilter system

作     者：Hao HUANG Lihao HE Yuxuan WANG Liang CHEN Hui HU Mi ZHANG 黄浩;贺李浩;汪雨轩;陈亮;胡辉;张咪

作者机构：School of Environmental Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074People's Republic of China China-EU Institute for Clean and Renewable EnergyHuazhong University of Science and TechnologyWuhan 430074People's Republic of China Nanjing Research Institute of Electronics TechnologyNanjing 210039People's Republic of China Huawei Digital Power Technologies Co.Ltd.Shenzhen 518031People's Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2022年第24卷第12期

页      面：139-147页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：financially supported by the National Key Research and Development Program of China(No.2019YFC0214303) the Applied Basic Research Program of Wuhan,China(No.2015060101010068) 

主　　题：pulsed corona discharge VOCs purification trickling biofilter combined removal 

摘      要：Volatile organic compounds(VOCs) are typical pollutants that affect air *** plasma is thought to be a potential method that can remove VOCs from flue *** this experiment,pulsed corona discharge plasma combined with a biological tower was carried out to remove the benzene series,and toluene was selected as the typical *** results indicated that the removal efficiency of toluene by pulsed corona plasma was slightly higher than that of direct current(DC) corona plasma,while its energy efficiency was much higher than DC corona *** the optimal experimental conditions of pulse voltage 8.5 kV,initial toluene concentration 1400 mg m^(-3),and toluene flow rate of 121h^(-1),the toluene removal efficiency reached 77.11% by the single method of pulsed corona discharge plasma,and the energy efficiency was up to 1.515 g/(kW·h) under the pulse voltage of 4.0 *** trickling biofilter was constructed by using the screened and domesticated Acinetobacter baumannii,and the highest toluene removal efficiency by the pulsed corona discharge plasma combined with the trickling biofilter rose up to 97.84%.Part of the toluene was degraded into CO_(2),H_(2)O,and some intermediate products such as o-diphenol under the influence of Acinetobacter *** the remaining waste gas passed through the discharge plasma reactor,the benzene ring structure could be directly destroyed by the collision between toluene and ***,O·,OH·,and some other oxidizing radicals generated by the discharge also join into the oxidative decomposition of toluene and its intermediate products,thereby further improving the removal efficiency of ***,the two-stage plasma-biofilter system not only showed a high toluene removal efficiency,but also had a good energy *** results of this study will provide theoretical support and technical reference for industrial VOC treatment.