Modeling of Ce(IV) transport through a dispersion flat combined liquid membrane with carrier P507
文献类型：SCI/SSCI论文
| 作者 | Pei L. |
| 发表日期 | 2014 |
| 关键词 | Dispersion flat combined liquid membrane (DFCLM) dispersion phase feed phase 2-ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester Ce (IV) acid mono-2-ethylhexyl ester rare-earth-metals nickel ions copper-extraction separation removal diffusion behavior wastes water |
| 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 x 10(-8) m(2)center dot s(-1) and 31.2 mu m, respectively. The results are in good agreement with experimental results. |
| 出处 | Frontiers of Environmental Science & Engineering |
| 卷 | 8 |
| 期 | 4 |
| 页 | 503-509 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2095-2201 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29657]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Pei L.. Modeling of Ce(IV) transport through a dispersion flat combined liquid membrane with carrier P507. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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