Adsorption Studies of Chlorpropham and 3-Chloroaniline on Chemically Activated Halloysite  

作　　者：Beata Szczepanik Piotr Slomkiewicz Magdalena Gamuszek Kamil Czech 

机构地区：[1]Institute of Chemistry, Jan Kochanowski University, Kielce 25-426, Poland [2]The Structural Research Laboratory, Jan Kochanowski University, Kielce 25-426, Poland

出　　处：《Journal of Chemistry and Chemical Engineering》2014年第6期626-634,共9页化学与化工（英文版）

摘　　要：Chemically modified halloysite proved to be an effective adsorbent for the pesticide chlorpropham and 3-chloroaniline from an aqueous solution. Adsorption experiments were conducted using such procedures as the time-dependent （kinetic） procedure and the concentration dependent （isotherm） procedure. Results indicate that the adsorption process is related to the kind of the studied compound. The equilibrium data are well suited to a Freundlich isotherm in the case of both investigated compounds. Adsorption kinetics of chlorpropham and 3-chloroaniline on acid-treated halloysite was successfully described by pseudo-second order kinetic model and the model of Weber and Morris. From the present study, we suggest that the adsorption of chlorpropham and 3-chloroaniline on the modified halloysite is a rather complex process involving two steps： external mass transfer and intra-particle diffusion.

关 键 词：Chlorpropham 3-chloroaniline REMOVAL HALLOYSITE acid activation. 

分 类 号：TQ457.202[化学工程—农药化工] O647.33[理学—物理化学]