2006•Gaofenzi cailiao kexue yu gongchengRequires access

The Adsorption of Chlorophenols on the Hypercrosslinked Polymeric Resins

Tang Shu-he

Abstract

A comparison study of the adsorption behaviors of chlorophenols on the hypercrosslinked adsorption resin with that on Amberlite XAD-4 and ZH-01 was made including the static equilibrium adsorption,the adsorption thermodynamics properties and so on.The results showed that the adsorption date fits into the Freundlich and Langmuir isotherm,and the uptake of 2-chlorophenol on ZH-01 is a type of physical adsorption,2,4-dichlorophenol or 2,4,6-trichlorophenol is a type of transitional chemical adsorption.The adsorption is exothermic process,thus lower temperature is better for adsorption. Estimations of the isosteric enthalpy of adsorption,free energy,and entropy of adsorption were reported and the adsorption behaviors were reasonably interpreted.

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Key concepts: Adsorption, Amberlite, Enthalpy, Freundlich equation, Langmuir, Exothermic reaction, Exothermic process, Materials science