风道式光催化反应器降解VOCs的效果分析

发布时间：2018-06-19 14:52

本文选题：光催化氧化 + VOCs　；参考：《环境工程学报》2017年07期

【摘要】：针对室内挥发性有机化合物(VOCs),搭建了带风道式反应器的模拟环境舱实验系统,选取甲醛、甲苯和苯为目标污染物,研究了光催化对各污染物的降解性能及其之间的相互影响。通过装置的优化,还对紫外光下目标VOC降解的主要副产物进行了检测。结果表明,单组分VOC的降解实验中,该净化器对3种污染物均具有良好的降解效果,其中对甲苯和苯的降解性能相似,对甲醛的降解性能更优。2组分VOCs降解实验中,目标组分会受到另一组分的不同程度影响;甲苯和苯无论是作为影响组分还是目标组分其实验结果均较接近;甲醛对甲苯、苯的降解影响明显大于两者的相互影响,即甲醛对两者的降解反应阻碍更大。甲苯的主要副产物为苯、苯甲醛和苯甲酸,苯的主要副产物为苯酚。
[Abstract]:In this paper, an experimental system of simulated environment chamber with air channel reactor was built for indoor volatile organic compounds (VOCs). Formaldehyde, toluene and benzene were selected as the target pollutants to study the photocatalytic degradation performance of each pollutant and their interaction. The main by-products of target VOC degradation under ultraviolet light were also detected by the optimization of the device. The results showed that the purifier had a good degradation effect on three pollutants in the degradation experiment of single component VOC. The degradation performance of toluene and benzene was similar, and the degradation performance of formaldehyde was better than that of VOCs of component .2. The experimental results of toluene and benzene were similar, the degradation effect of formaldehyde on toluene and benzene was greater than that of each other. That is to say, the degradation reaction of formaldehyde to both is more hindering. The main by-products of toluene are benzene, benzaldehyde and benzoic acid, and phenol is the main by-product of benzene.
【作者单位】：重庆大学三峡库区生态环境教育部重点实验室;
【基金】：国家自然科学基金资助项目(51478058) 重庆市应用开发计划项目(cstc2013yykf C00002) 重庆市建设科技计划项目(城科字2013第1-5-2)
【分类号】：O643.32;O644.1;X51

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