METAL SORPTION WITH EXTRACTANT-IMPREGNATED MACROPOROUS RESINS .1. PARTICLE DIFFUSION KINETICS

被引：75

作者：

JUANG, RS

LIN, HC

机构：

[1] Department of Chemical Engineering, Yuan-Ze Institute of Technology, Taoyuan, 32026, Nei-Li

来源：

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 1995年 / 62卷 / 02期

关键词：

PARTICLE DIFFUSION KINETICS; COPPER SORPTION; EXTRACTANT-IMPREGNATED RESIN; DI(2-ETHYLHEXYL)PHOSPHORIC ACID; MODIFIED SHRINKING-CORE MODEL;

D O I：

10.1002/jctb.280620204

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Kinetic measurements were made for the sorption of copper ions from aqueous sulfate solutions with di(2-ethylhexyl)phosphoric acid-impregnated Amberlite XAD macroporous resins in finite bath by a batch-contact time method. The sorption process of copper was first determined to be controlled by particle diffusion using a modified shrinking-core mechanism, which considered reversibility of the sorption. A more rigorous model based on Fick's law was then applied to justify the applicability of the modified shrinking-core model to the present sorption systems. The effective particle diffusivity had an order of 10(-12) (in m(2) s(-1)), which was in agreement with those obtained for chelating ion-exchange processes.

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页码：132 / 140

页数：9

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