真空紫外光对含氧挥发性有机物的矿化效果  

Mineralization of oxygenated volatile organic compounds under vacuum ultraviolet light

作　　者：任立媛 李朝林 REN Liyuan;LI Chaolin(Guangdong Urban Planning and Design Institute,Guangzhou 510290,China;Environmental Science and Engineering Research Center,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China)

机构地区：[1]广东省城乡规划设计研究院,广东广州510290 [2]哈尔滨工业大学(深圳)环境科学与工程研究中心,广东深圳518055

出　　处：《化工环保》2020年第3期279-283,共5页Environmental Protection of Chemical Industry

摘　　要：以醛类、醚类和酯类化合物作为目标污染物,考察了真空紫外光解法对含氧挥发性有机物(OVOCs)的矿化效果。实验结果表明,几种OVOCs在真空紫外光照射下都能达到90%以上的矿化率,且OVOCs的物质结构越简单,官能团的反应活性越强,越容易被矿化。直链结构比环状结构OVOCs的矿化效果更好,且分子链越短矿化速率越快;具有五元环结构的OVOCs比具有六元环结构的反应速率更快;官能团的键能越弱,反应活性越强,越容易被矿化。The effect of vacuum ultraviolet light on mineralization of oxygenated volatile organic compounds(OVOCs)were studied with aldehydes,ethers and esters as target pollutants.The experiment results indicate that the mineralization rate of these OVOCs all can reach more than 90%under vacuum ultraviolet light,and OVOCs with simpler material structure and higher functional group reactivity are easier to be mineralized.Furthermore,compared to cyclic structure,OVOCs with linear structure can realized more efficient mineralization,and the shorter the molecular chain is,the faster the mineralization rate is.OVOCs with five-membered ring structure keep a faster reaction rate than OVOCs with six-membered ring structure.The weaker the bond energy of the functional group is,the higher the reactivity is,and the OVOCs are easier to be mineralized.

关 键 词：含氧挥发性有机物 真空紫外光 矿化 

分 类 号：X511[环境科学与工程—环境工程]