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| 分散支撑液膜中四价铈的传输分离 | |
| 引用本文： | 裴亮,姚秉华,付兴隆,王理明.分散支撑液膜中四价铈的传输分离[J].过程工程学报,2008,8(5):851-858. |
| 作者姓名： | 裴亮 姚秉华 付兴隆 王理明 |
| 作者单位： | 1. 西安理工大学水利水电学院,陕西,西安,710048;西安理工大学理学院,陕西,西安,710048 2. 西安理工大学理学院,陕西,西安,710048 3. 西安理工大学水利水电学院,陕西,西安,710048 |
| 摘 要： | 研究了以聚偏氟乙烯膜(PVDF)为液膜支撑体，煤油为膜溶剂，2-乙基己基磷酸-单-2-乙基己基酯(PC-88A)为流动载体，煤油和PC-88A的混合溶液作为膜溶液，膜溶液和HCl溶液组成分散相的分散支撑液膜(DSLM)中Ce(IV)的传输行为；考察了料液相酸度、Ce(IV)起始浓度、HCl浓度、膜溶液与HCl溶液体积比、解析剂及载体浓度对Ce(IV)传输的影响，得出其最优传输分离条件为：HCl浓度4.0 mol/L，膜溶液与HCl溶液体积比2:1，载体浓度0.16 mol/L，料液相中HCl浓度0.1 mol/L. 在最优条件下，料液相中Ce(IV)的初始浓度为0.7′10-4 mol/L时，迁移75 min，其迁移率达到96.3%. 提出了Ce(IV)在DSLM中的传质动力学方程，得出Ce(IV)在膜中的扩散系数为6.69′10-8 m2/s，料液-膜边界层厚度为19.3 mm. 对模拟样品Ce(IV)的分离结果表明，在一定条件下，125 min内模拟煤粉灰中Ce(IV)迁移率达到92.8%；105 min内模拟冶金熔渣中其迁移率可达92.6%；215 min内Ce(IV)与Eu(III)的混合液中Ce(IV)迁移率达到83%，其他元素迁移率极低. |
| 关 键 词： | 分离 分散支撑液膜 2-乙基己基磷酸-单-2-乙基己基酯 铈 |
| 收稿时间： | 2008-5-21 |
| 修稿时间： | 2008-7-8 |
Transport and Separation of Cerium(IV) in Dispersion Supported Liquid Membrane System |
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| PEI Liang,YAO Bing-hua,FU Xing-long,WANG Li-ming.Transport and Separation of Cerium(IV) in Dispersion Supported Liquid Membrane System[J].Chinese Journal of Process Engineering,2008,8(5):851-858. | |
| Authors: | PEI Liang YAO Bing-hua FU Xing-long WANG Li-ming |
| Affiliation: | PEI Liang1,2,YAO Bing-hua1,FU Xing-long2,WANG Li-ming1 (1. Institute of Water Resources , Hydro-electric Engineering,Xi\'an University of Technology,Xi\'an,Shanxi 710048,China,2. School of Science,Xian University of Technology,China) |
| Abstract: | The transport of Ce(IV) through a dispersion-supported liquid membrane consisting of polyvinylidene fluoride membrane as the liquid membrane support and dispersion solution including HCl solution as the stripping solution and 2-ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester (PC-88A) dissolved in kerosene as the membrane solution was studied. The effects of HCl concentration, initial concentration of Ce(IV) in the feed phase, volume ratio of membrane solution to stripping solution, concentration of HCl... |
| Keywords: | separation dispersion supported liquid membrane 2-ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester cerium |
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