2002•Ion Exchange and AdsorptionRequires access

STUDIES ON ADSORPTION MECHANISM FOR ANILINE WITH THE HYPERCROSSLINKED RESINS

Gencheng Zhang

Abstract

Under the static conditions the thermodynamics properties have been studied for adsorpting aniline in aqueous solution with hypercrosslinked resins AM-1 and NJ-8 synthesized by ourselves and macroporous adsorbent Amberlite XAD-4, including the adsorption isotherms in different temperature. The results showed that the adsorption for aniline in aqueous solution on the three adsorbents was fitted for Langmuir and Freundlich equations, and the adsorption for aniline on AM-1 or NJ-8 proved to be an endothermic process. Because of the microporous structure and the adsorption center of acid functional groups on the surface of the resins, the adsorption process for aniline on the AM-1 and NJ-8 was a complex interaction of physical and chemical factors.

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Key concepts: Aniline, Adsorption, Chemistry, Amberlite, Endothermic process, Aqueous solution, Microporous material, Langmuir