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Study on adsorption thermodynamics and kinetics of p-toluic acid onto macroporous adsorption resin

Tang Shu-he

Abstract

Experimental investigations were conducted to study the adsorption characteristics of p-toluic acid,with NDA-1800 and JX-101 resins as adsorbents.The results indicated that the equilibrium adsorption data was fitted well with Freundlich adsorption isotherm model in the temperature range of 283~313 K.The changes of enthalpy,free energy,entropy indicated an exothermic,spontaneous and disorder decreasing process happened in the adsorption,with low activation energy.The adsorption kinetics parameters were drawn from the experiment data and increased with raising temperature.

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Key concepts: Adsorption, Enthalpy, Thermodynamics, Exothermic reaction, Chemistry, Freundlich equation, Kinetics, Activation energy