Vapor Adsorption of Volatile Organic Com-pounds Using Organically Modified Clay
Organically modified clay (organoclay) was used to adsorb volatile organic compounds from a gaseous phase. The organoclay was prepared by adsorbing hexadecyltrimethylammo-nium (HDTMA) on the surface of montmorillonite particles. Two volatile organic compounds (VOCs), chlorobenzene and trichloroethylene, were adsorbed to the organoclay using a fixed adsorption bed. The adsorption was carried out at various inlet concentrations of gaseous VOCs in a carrier gas (nitrogen). The adsorption behavior of VOCs was investigated using natural clay and two types of organoclays, which had different HDTMA loadings. Adsorption breakthrough curves were obtained, and the adsorption data were modeled with two adsorp-tion isotherms. Desorption of VOCs was also conducted using pure nitrogen, and the desorp-tion profiles were fitted with two different theoretical models. It was found that the organo-clay possesses significant adsorption capacity towards VOCs and the uptake depends on the degree of HDTMA loading on clay surface.
Organoclay VOCs Adsorption Desorption HDTMA
Sang-Do Yeo Su-Jin Park Young-Bo Kim
Department of Chemical Engineering, Kyungpook National University, Daegu, 702-701, Ko-rea
国际会议
The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)
北京
英文
2007-10-14（万方平台首次上网日期，不代表论文的发表时间）