2004•Ion Exchange and AdsorptionRequires access

THE ADSORPTION THERMODYNAMICS STUDY ON PHENYLACETIC ACID BY THE NEW ADSORPTION RESINS

HE Jian-ling

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Abstract

Equilibrium data for the adsorption of phenylacetic acid on the newly hyper-cross linked resins AH、NDa-150 and macroporous adsorbent (Amberlite XAD-4), including of the adsorption isotherms at 288K, 303K and 318K, the results show the adsorption is fit for Langmuir equation. The capacities of equilibrium adsorption of AH、NDa-150 increased about 90%, 113% over that of Amberlite XAD-4; which may be contributed to polarity group on surface and the unusual pore distribution. The Langmuir adsorption isotherm, relative adsorption capacity and isosteric adsorption enthalpy indicate, the adsorption for phenylacetic acid on AH resin is the coefficient result with physical adsorption and chemical adsorption. The adsorption enthalpy change, free energy change, entropy change for the phenylacetic acid adsorbed by 3 resins were calculated, and the reasonable explanation was made to the adsorption behavior.

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What this paper is about

Equilibrium data for the adsorption of phenylacetic acid on the newly hyper-cross linked resins AH、NDa-150 and macroporous adsorbent (Amberlite XAD-4), including of the adsorption isotherms at 288K, 303K and 318K, the results show the adsorption is fit for Langmuir equation. The capacities of equilibrium adsorption of AH、NDa-150 increased about 90%, 113% over that of Amberlite XAD-4; which may be contributed to polarity group on surface and the unusual pore distribution. The Langmuir adsorption isotherm, relative adsorption capacity and isosteric adsorption enthalpy indicate, the adsorption for phenylacetic acid on AH resin is the coefficient result with physical adsorption and chemical adsorption. The adsorption enthalpy change, free energy change, entropy change for the phenylacetic acid adsorbed by 3 resins were calculated, and the reasonable explanation was made to the adsorption behavior.

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Available abstract

Equilibrium data for the adsorption of phenylacetic acid on the newly hyper-cross linked resins AH、NDa-150 and macroporous adsorbent (Amberlite XAD-4), including of the adsorption isotherms at 288K, 303K and 318K, the results show the adsorption is fit for Langmuir equation. The capacities of equilibrium adsorption of AH、NDa-150 increased about 90%, 113% over that of Amberlite XAD-4; which may be contributed to polarity group on surface and the unusual pore distribution. The Langmuir adsorption isotherm, relative adsorption capacity and isosteric adsorption enthalpy indicate, the adsorption for phenylacetic acid on AH resin is the coefficient result with physical adsorption and chemical adsorption. The adsorption enthalpy change, free energy change, entropy change for the phenylacetic acid adsorbed by 3 resins were calculated, and the reasonable explanation was made to the adsorption behavior.

Key concepts: Adsorption, Amberlite, Chemistry, Enthalpy, Phenylacetic acid, Langmuir, Langmuir adsorption model, Thermodynamics

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