中文摘要：

为 Ce (IV ) 从的运输的一个数学模型盐酸通过分散公寓的酸答案把液体膜(DFCLM ) 与相结合包含 2 乙醇己基的磷的 acid-mono-2-ethyl 己基的酉旨(P507 ) 作为搬运人，当膜答案被学习了，溶解在煤油。基于膜技术，便于的运输的这个过程是溶剂抽取的常规技术上的一个变化并且可以用 Ficks 秒法律算术地被描述。为运输速度的方程通过液体膜就 P507 和它的金属性的建筑群的散开而言被导出。在这个工作，系统被认为在在 Ce (IV ) 和搬运人之间的短暂州、化学的反应仅仅在溶剂水的接口发生。模型集中侧面为 Ce (IV ) 被获得，从哪个抽取速度被预言。试验性、模仿的 Ce (IV ) 抽取为高 Ce (IV ) 集中和酸味大小写显示出类似的趋势。模型结果显示高起始的 Ce (IV ) 集中和酸味两个都在 Ce (IV ) 抽取上有有害效果并且脱衣。在膜和散开层在之间的厚度的 Ce (IV ) 的散开系数喂阶段和膜阶段被获得，价值是 6.31 5 ?% 并且 9.0，分别地) ，但是没在降级上有效果新鲜， non-predegraded，文档(% BD？？

英文摘要：

A mathematical model for the transport of Ce （IV） from hydrochloric acid solutions through dispersion flat combined liquid membrane （DFCLM） with contain 2- ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester （P507） as the carrier, dissolved in kerosene as the membrane solution have been studied. This process of facilitated transport, based on membrane technology, is a variation on the conventional technique of solvent extraction and may be described mathematically using Fick＇s second law. The equations for transport velocity are derived considering the diffusion of P507 and its metallic complexes through the liquid membrane. In this work, the system is considered to be in a transient state, and chemical reaction between Ce（IV） and the carrier to take place only at the solvent-aqueous interfaces. Model concentration profiles are obtained for the Ce（IV）, from which extraction velocities are predicted. The experimental and simulated Ce（IV） extractions showed similar tendencies for a high Ce （IV） concentration and acidity case.The model results indicate that high initial Ce（IV） concentrations and acidity both have detrimental effects on Ce（IV） extraction and stripping. The diffusion coefficient of Ce（IV） in the membrane and the thickness of diffusion layer between feed phase and membrane phase are obtained and the values are 6.31 × 10-8m2·s-1 and 31.2 μm, respectively. The results are in good agreement with experimental results.