摘要
利用自行研制的微波无极灯对模拟二硫化碳废气进行光解.结果表明,微波无极灯光解CS2的效率随其初始浓度的增加而降低;停留时间是影响CS2转化率的重要因素;体系中水汽的增加有利于光解效率的提高.当管道气体流速为0.2 m/s,初始浓度约100 mg/m3,湿度约40%时,微波无极汞灯光解CS2的效率可达75%以上;微波无极碘灯对CS2的光解效率亦达到50%以上.同时探讨了CS2光解的反应机理,主要是紫外光直接光解和.OH自由基氧化的共同作用.
The photolysis of simulating carbon disulfide malodorous gas was studied under UV irradiation emitted by microwave electrodeless lamps. Experiments results show that the photolysis of carbon disulfide is determined by the initial eoneentration, residence time and gas humidity. When air velocity is 0.2 m/s, initial concentration is about 100 mg/m^3 ,and gas humidity is about 40%, the conversion ratio of carbon disulfide can reach to 75% with microwave eleetrodeless mercury lamp and 50% with microwave eleetrodeless iodine lamp. The mechanism of carbon disulfide photolysis was further studied. It is concluded that the photolysis of carbon disulfide is probably a collective action of direct photolysis and · OH radical oxidation.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2007年第7期1627-1631,共5页
Environmental Science
基金
上海市科委创新基金项目(042312044)
关键词
微波无极灯
二硫化碳
光解
microwave eleetrodeless lamp
carbon disulfide
photolysis
