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化学学报
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化学学报 ›› 1997, Vol. 55 ›› Issue (11): 1056-1060. 上一篇    下一篇

研究论文

金属离子通过大块液膜迁移动力学的研究

毛建新;王琦;陈庚华;韩世钧   

  1. 浙江大学化学系
  • 发布日期:1997-11-15

Study of kinetics of metal ions transporting through bulk liquid membranes

MAO JIANXIN;WANG QI;CHEN GE NHUA;HAN SHIJUN   

  • Published:1997-11-15

PDF

549

被引次数

3

本文指出金属离子通过大块液膜的迁移动力学模型。其中A, B, C分别表示在原料相、有机膜相、反萃相中的金属离子, 下标i表示界面; 界面扩散是离子迁移速率的控制步骤。从相应的动力学方程关联实验数据可以得到三个参数(k1, kx, kp),其中kp即为分配比, kp越大, 金属离子在机相中的残留量越小,反之亦然。

关键词: 金属离子, 界面扩散, 液膜迁移, 迁移动力学

It is pointed out in this paper that the kinetic model of metal ions transporting through a Bulk Liquid Membrane is : A→Ai==B==Ci→C. where A, B, C represents the metal ion in feed, organic membrane and strip respectively; the subscript i represents the interface. The controlling process is the diffusion in boundary surface. Three parameters (k1, kx, kp) are obtained from the correlation between the experimental data and the kinetic equation. The value of kp is the partition ratio. The larger the kp value is, the samller the amount of metal ions remains in the organic phase.

Key words: METAL ION

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