Separation study of cadmium as CdI4(2-) through a bulk liquid membrane containing ketoconazole and oleic acid.
A chloroform membrane system containing a given mixture of ketoconazole and oleic acid was applied for the uphill transport of Cd2+ ions as CdI42-. In an HCl medium the ligand could form a stable ion-pair with CdI4(2-), which was readily extractable in the membrane phase. A weak basic solution (pH 8) was used as a suitable stripping medium for the quantitative transport of cadmium across the liquid membrane after 120 min. The selectivity and efficiency of Cd2+ transport from an aqueous solution containing other cations, such as Co2+, Cr3+, Ni2+, Fe2+, Mn2+, Pd2+ and Zn2+ ions, were investigated. It was found that none of these cations interfered with Cd2+ transport.
Farhadi
Khalil
K
Department of Chemistry, Faculty of Science, Urmia University, Urmia, Iran. kh.farhadi@mail.urmia.ac.ir
Shamsipur
Mojtaba
M
D002104:Cadmium / Q000302:isolation & purification*; D019187:Cadmium Compounds / Q000737:chemistry*; D002725:Chloroform; D007202:Indicators and Reagents; D007454:Iodides / Q000737:chemistry*; D007654:Ketoconazole / Q000737:chemistry*; D008567:Membranes, Artificial; D019301:Oleic Acid / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012972:Sodium Hydroxide / Q000494:pharmacology; D012997:Solvents
D019187:Cadmium Compounds; D007202:Indicators and Reagents; D007454:Iodides; D008567:Membranes, Artificial; D000644:Quaternary Ammonium Compounds; D012997:Solvents; D002104:Cadmium; C073250:cadmium iodide; D019301:Oleic Acid; D012972:Sodium Hydroxide; D002725:Chloroform; D007654:Ketoconazole