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Extraction of Cobalt (II) form aqueous solution by use 2- [(4- carboxy methylphenyl) azo ] -4,5- diphenyl imidazole | ||
| journal of kerbala university | ||
| Article 1, Volume 4, Issue 2, 2008, Pages 71-81 PDF (0 K) | ||
| Author | ||
| Ibtehaj . R. Ali | ||
| Abstract | ||
| 2- [(4- Carboxy methylphenyl) azo ] -4,5- diphenyl imidazole (4 – CMePADPI) used as sensetive and selective ligand for extraction cobalt (II) ions from aqueous solutions and this application shows the optimum conditions for good extractio was (pHex = 11) which was giving higher distribution ratio (D) and need (10minutes) for shaking the two layers to reach good extraction as well as the optimum concentration of Co + 2 ions in aqueous phase was (50μg)( 1.69x10 -4 M) to give higher Distribution ratio (D) . Stoichiometric study shows the structure of ion pair complex extraction for Co+2 ions with (4CMePADPI) ligand was 1:1 (metal :ligand ) [Co(4 – CMePADPI) +2 SO4-2 from other hand organic solvent shows there is not any Linear relation between dielectric constant (E) of orgonic solvent and distribution ratio (D) of extraction ,but there is an effect for the structure of organic solvent .At later the thermodynamic study demonstrate the complexation reaction betweenCo+2ions and ligand(4 –CMePADPI) was exothermic . | ||
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