乳状液膜分离稀土的传质模型的发展现状

本文对近些年出现的乳状液膜法迁移稀土离子的传质模型作了较为详细的总结和比较。由于在液膜体系中，影响迁移的因素比较多，推导出的数学模型都比较复杂。经过简化和近似处理后得到的解析式，都可以和实验值取得较好的一致性，但又有一定的局限性，另外，新的液膜体系不断出现，因此对数学模型的研究仍需深入。

PRESENT SITUATION OF THE MODEL FOR SEPARATION OF RARE EARTH BY EMULSION LIQUID MEMBRANES

With the study of extraction and separation of rare earth using emulsion liquid membranes developed, the mass transfer models for this system have sprang up in recent years. In this present paper some mass transfer models are summarized and compared. Because of so much influential factors in the emulsion liquid membranes system, the mass transfer equations derived from the models were very complicated. After simplifying these equations, the analytic solutions were achieved and the experimental results were in good agreements with the calculated values. In addition, some new emulsion liquid membranes systems have arisen, thus, the more study on mass transfer model are needed.