粉末活性炭对水中氯酚的吸附  

Adsorption of chlorophenols in water by powdered activated carbon

作　　者：钟少芬[1,2] 莫健文[3] 李阳苹[1] 刘煜平[1] 

机构地区：[1]东莞理工学院能源与化工系,东莞523808 [2]东莞市清洁生产科技中心,东莞523808 [3]五邑大学分析测试中心,江门529020

出　　处：《环境工程学报》2016年第6期2927-2932,共6页Chinese Journal of Environmental Engineering

基　　金：国家火炬计划重大子项目(2012GH722201);广东高校化工清洁生产与绿色化学品工程技术开发中心开放基金(201402);东莞市社会科技发展项目(2013108101032)

摘　　要：2,4-二氯酚、2,4,6-三氯酚、五氯酚是氯酚类污染物的典型代表,鉴于其对人类身体健康的危害和对环境所造成的污染,已被很多国家列为环境优先控制污染物。研究粉末活性炭(PAC)对该3种氯酚的吸附过程以及投炭量、p H值和水质对PAC吸附性能的影响。结果表明:粉末活性炭可以有效去除水中的80%以上的氯酚;吸附行为符合Freundlich吸附等温线和Langmuir吸附等温线;以分子状态存在的氯酚比电离状态更容易被活性炭所吸附。2,4-dichlorophenol,2,4,6-trichlorophenol,and pentachlorophenol are typical representatives of chlorophenols. As chlorophenols have caused great harm to human health and the environment,they are classified as environmental priority pollutants in many countries. The adsorption of these chlorophenols onto powdered activated carbon（ PAC） was studied,with a focus on the effects of PAC dosage,p H,and water quality on adsorption performance. The results indicated that more than 80% of the chlorophenols could be adsorbed by PAC,which follows the Freundlich and Langmuir adsorption isotherms. Particularly,chlorophenols in the molecular state were adsorbed more easily by PAC than those in the ionized state.

关 键 词：粉末活性炭(PAC) 氯酚 吸附 动力学 

分 类 号：X703[环境科学与工程—环境工程]