Premium
Liquid–liquid extraction of cadmium(II) by Cyanex 923 and its application to a solid‐supported liquid membrane system
Author(s) -
Rodríguez Ana María,
GómezLímón Dulce,
Alguacil Francisco José
Publication year - 2005
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.1271
Subject(s) - cadmium , hydrochloric acid , extraction (chemistry) , membrane , chemistry , exothermic reaction , metal , liquid–liquid extraction , phase (matter) , nuclear chemistry , inorganic chemistry , chromatography , organic chemistry , biochemistry
The extraction of cadmium(II) by Cyanex 923 (a mixture of alkylphosphine oxides) 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 CdCl 2 .2L, HCdCl 3 .2L and H 2 CdCl 4 .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 influences 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. Copyright © 2005 Society of Chemical Industry