Liquid-liquid extraction of Cd(II) by Cyanex 923 and its application to a solid-supported liquid membrane system
The extraction of cadmium (II) by Cyanex 923 (phosphine oxides mixture) in Solvesso 100 from hydrochloric acid solution has been investigated. The extraction reaction is exothermic. The numerical analysis of metal distribution data suggests the formation of CdCl2•2L, HCdCl3•2L and H2CdCl4•2L (L=liga...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2005 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/36800 |
| Acceso en línea: | http://hdl.handle.net/10261/36800 |
| Access Level: | acceso abierto |
| Palabra clave: | Cyanex 923 Extraction Membrane transport Cadmium Chloride media |
| Sumario: | The extraction of cadmium (II) by Cyanex 923 (phosphine oxides mixture) in Solvesso 100 from hydrochloric acid solution has been investigated. The extraction reaction is exothermic. The numerical analysis of metal distribution data suggests the formation of CdCl2•2L, HCdCl3•2L and H2CdCl4•2L (L=ligand) in the organic phase. The results obtained for cadmium (II) distribution have been implemented in a solid-supported liquid membrane system. The influence of feed phase stirring speed (400-1400 min-1), membrane composition (carrier concentration: 0.06-1 mol dm-3) and metal concentration (0.01-0.08 g dm-3) on cadmium transport have been investigated. |
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