ION REPLACEMENT GEL：ION REPLACEMENT KINETICS MODEL OF ACA

CHEN Yiqing; SUN Duoxian; Anthony M. Sun

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ION REPLACEMENT GEL：ION REPLACEMENT KINETICS MODEL OF ACA

更新时间：2025-12-10

- ION REPLACEMENT GEL：ION REPLACEMENT KINETICS MODEL OF ACA
- CIESC Journal Issue 6, Pages: 802-806(2003)
- 作者机构：
  
  1. 天津大学化工学院
  2. 加拿大多伦多大学生理系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 2003，
  
  Published：25 June 2003
- 稿件说明：
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CHEN Yiqing, SUN Duoxian, Anthony M. Sun. ION REPLACEMENT GEL：ION REPLACEMENT KINETICS MODEL OF ACA[J]. CIESC Journal, 2003, (6): 802-806.
DOI：

CHEN Yiqing, SUN Duoxian, Anthony M. Sun. ION REPLACEMENT GEL：ION REPLACEMENT KINETICS MODEL OF ACA[J]. CIESC Journal, 2003, (6): 802-806. DOI：

摘要

用动边界模型描述了海藻酸-壳聚糖-海藻酸(ACA)离子取代凝胶对2价离子的取代动力学过程.模型具有较好的可靠性，ACA离子取代凝胶对2价离子的取代属于颗粒扩散控制.ACA离子取代凝胶对Pb2+的反应级数是0.76.

Abstract

ACA ion replacement gel is a novel ion adsorbent and is hopeful to be used to cure human toxicosis metallicus. In this paper the ion replacement kinetics process of Alginate-Chitosan-Alginate(ACA) and the mutual replacement process of Calcium Alginate(A-Ca) and Alginate-Chitosan-Alginate-Calcium(ACA-Ca) gel beads for Pb2+are studied by mobile boundary model. The model has high reliability. The ion replacement process is controlled by Particle Diffusion Control (PDC). The apparent diffusion coefficient is higher with increasing concentration of Pb2+ and is linearly related to R-2. The reaction order of ACA for Pb2+is 0.76.

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