摘要
针对大气污染中挥发性有机化合物的控制问题,在环境工程的综合实验中设计了低温等离子体净化去除甲苯综合实验。该实验以过渡金属氧化物为催化剂,利用低温等离子体技术净化去除甲苯,探究了甲苯初始浓度、气体空速、反应时间和能量密度等实验条件对甲苯净化去除效果的影响,得到了低温等离子体净化去除甲苯的最佳实验条件。结果表明:甲苯初始浓度为2.22 mg·L^(-1),空速为24 000 h^(-1),反应时间为30 min,能量密度大于2.19 kJ·L^(-1)时,甲苯去除率可达90%以上。实验为低温等离子体去除甲苯的实际应用奠定了基础。以催化剂颗粒的制备及低温等离子体净化去除甲苯的性能评价作为实验教学内容,兼具专业性、综合性和创新性。
A comprehensive experiment for non-thermal plasma(NTP)purification and removal of toluene was designed for the air pollution control of volatile organic compounds(VOCs)in the course Comprehensive Experiment of Environmental Engineering.By using transition metal oxides as catalyst,the optimal experimental conditions for the removal of toluene assisted by NTP were explored.The effects of initial toluene concentration,gas space velocity,reaction time and energy density on the purification and removal of toluene were investigated.The results show that the removal rate of toluene exceeds 90%,when the initial concentration of toluene is 700 ppm,the space velocity is 24000 h^(-1),the reaction time is 30 min,and the energy density is greater than 2.19 kJ/L.This laid a foundation for the practical application of NTP in removing toluene.The preparation of catalyst particles and the evaluation of toluene removal performance assisted by NTP were used as the experimental contents,which are professional,comprehensive and innovative.
作者
刘洪博
黄志勇
LIU Hongbo;HUANG Zhiyong(School of Materials and Environment,Beijing Institute of Technology,Zhuhai,Zhuhai 519088,Guangdong,China)
出处
《实验室研究与探索》
CAS
北大核心
2023年第5期92-96,共5页
Research and Exploration In Laboratory
基金
广东省普通高校特色创新项目(自然科学)(2018KTSCX303)。
关键词
低温等离子体
甲苯
挥发性有机物
non-thermal plasma
toluene
volatile organic compounds(VOCs)
