| LIQUID-PHASE ADSORPTION KINETICS OF ISOMALTOTRIOSE ON Ca^2＋ EXCHANGE RESIN |
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| 摘 要： |
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| 关 键 词： | 物理化学 表面现象 吸附 运动机理 |
LIQUID-PHASE ADSORPTION KINETICS OF ISOMALTOTRIOSE ON Ca2+ EXCHANGE RESIN |
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| Authors: | LI Xiang GUO Haifu |
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| Institution: | Chemistry Department of Zhaoqing University, Zhaoqing 526061, China |
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| Abstract: | 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 isomoltotriose onto Ca2+ resin involve chemical adsorption. |
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| Keywords: | Adsorption kinetics Isomaltotriose Exchange resin |
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