微波无极紫外光降解气态甲苯的试验研究  

Study on the Photolysis of Gaseous Toluene by Microwave Discharge Electrodeless UV

作　　者：王金水[1] 颜幼平[1] 王睿[1] 周梓杨 

机构地区：[1]广东工业大学环境科学与工程学院,广东广州510006

出　　处：《安全与环境工程》2017年第5期50-54,共5页Safety and Environmental Engineering

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.

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 

分 类 号：X511[环境科学与工程—环境工程]