摘要
采用微波无极紫外光降解甲苯气体,研究了加水量、甲苯添加量(初始浓度)、微波输入功率对甲苯光降解效率的影响,并对甲苯光降解反应动力学及中间产物进行了初步探讨。试验结果表明:随着微波输入功率的增加,甲苯去除率逐渐增加;随着甲苯初始浓度的增加,甲苯去除率逐渐降低;在一定范围内,随着加水量的增加,甲苯去除率增加;甲苯光降解反应过程符合一级动力学模型;甲苯光降解反应的中间产物主要有苯甲醛、苯酚、苯甲醇。
This paper studies the effects of the added water,the addition of toluene (the initial concentra- tion) and the input power on photodegradation of toluene by microwave discharge electrodeless UV. In ad- dition, we also make a preliminary discussion about the intermediate products and the dynamics equations in the reaction. The results show that the removal rate increases with the increasing of the input power, de- creases with the increasing of the initial concentration and increases with the added water within a certain range. Benzaldehyde,phenol, benzoic acid and benzylalcohol are the main intermediate products of the pho- tocatalytic degradation,which follows the first-order kinetics.
出处
《安全与环境工程》
CAS
2017年第5期50-54,共5页
Safety and Environmental Engineering
关键词
微波无极紫外光
气态甲苯
光降解
降解效率
反应动力学
microwave discharge electrodeless UV
gaseous toluene
photodegradation
degradation efficien- cy
reaction kinetics