Abstract
The adsorption properties,including the adsorption isotherms,thermodynamics,of grape seed procyanidins onto macroporous resin HZ818 are investigated.Both the Langmuir and Freundlich equations can provide a good fit to the adsorption isotherms, which indicates an endothermic and a favorable process in our study.The capacities of the adsorption increase with temperature. The negative values of ΔG and values of ΔH lower than 40 kJ/mol indicate a spontaneous physical adsorption, and the positive values of ΔS show the increased randomness at the solid/solution interface during the adsorption process.
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