Establishment of Synchronous-Transport Concept in Liquid Membrane Separation

张秀娟; 黄平瑜

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Establishment of Synchronous-Transport Concept in Liquid Membrane Separation

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- Establishment of Synchronous-Transport Concept in Liquid Membrane Separation
- CIESC Journal Issue 5, (1988)
- 作者机构：
  
  华南理工大学环境科学研究所,华南理工大学环境科学研究所 ,广州,广州
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 October 1988，
  
  Published：25 October 1988
- 稿件说明：
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张秀娟, 黄平瑜. Establishment of Synchronous-Transport Concept in Liquid Membrane Separation[J]. CIESC Journal, 1988, (5).
DOI：

张秀娟, 黄平瑜. Establishment of Synchronous-Transport Concept in Liquid Membrane Separation[J]. CIESC Journal, 1988, (5). DOI：

摘要

本文研究了氰化镀镉废水中同时除去氰和镉并将其以Cd(CN)_4形式浓缩而直接回用的可能性.建立了以TRPO(混合三烷基氧膦)和HDEHP[二-2(乙基己基)磷酸

]为载体的液膜分离体系

解决了Cd~(2+)和CN-的迁移速度相匹配问题

提出了同步迁移的概念

及其数学表达式.最后用同步迁移指导最佳操作条件的选择.

Abstract

A new liquid membrane system is established with a double carrier(TRPO

a mixture of trialkyl phosphine oxime

and HDEHP

bis-(2-ethylhextyl)phosphoric acid)membrane phase

basic inner aqueous phase and weak acidic waste water phase for the removal of Cd2+ and CN- simultaneously and the direct re-use of the concentrated Cd(CN)42- in plating tanks. In order to describe the matching of the transport rates of Cadmium and Cyanide in this system

a synchronous-transport concept is developed and mathematically presented to be the same form of the liquid membrane transport rate equations of the two transported species. These equations can be used as a guidance for the selection of the optimum operation condition for the separation process.

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