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The adsorption of isomaltotriose from aqueous solution on Ca2+ resin was investigated. The adsorption isotherm and the rate curve were determined. The pseudo-first-order model, pseudo-second-order model and the intraparticle diffusion model were used to predict the rate constants of adsorption. The activation energy of adsorption has been also evaluated using the pseudo-second-order rate constants. The results showed that the adsorption of isomaltotriose onto Ca2+ resin is an exothermically activated process. The adsorption isotherm can be described by Langmuir equation. The pseudo-second-order model can fit well to the adsorption rate curve of isomaltotriose onto Ca2+ resin. It suggests that the adsorption of isomaltotriose onto Ca2+ resin involve chemical adsorption.
The adsorption of isomaltotriose from aqueous solution on Ca2 + resin was investigated. The adsorption isotherm and the rate curve were determined. The pseudo-first-order model, pseudo-second-order model and the intraparticle diffusion model were used to predict the rate constants of The activation energy of adsorption has been also used using the pseudo-second-order rate constants. The results showed that the adsorption of isomaltotriose onto Ca2 + resin is an exothermically activated process. The adsorption isotherm can be described by Langmuir equation. The pseudo -second-order model can fit well to the adsorption rate curve of isomaltotriose onto Ca2 + resin. It suggests that the adsorption of isomaltotriose onto Ca2 + resin involves chemical adsorption.