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Extraction of mercuric ions Hg(II) from aqueous solutions by using 2-[4-carboxy methyl phenyl azo]-4,5-diphenyl imidazole | ||
| journal of kerbala university | ||
| Article 1, Volume 2, Issue 4, 2006, Pages 49-60 PDF (0 K) | ||
| Author | ||
| S. K. Jawad | ||
| Abstract | ||
| The extraction of mercuric ions Hg2+ from aqueous media with ligand 2-[4-carboxy methyl phenyl azo]-4,5-diphenyl imidazole (4-CMePADI) dissolved in benzene studied. This study showed that the was optimum pHex of Hg2+ was (6) and the optimum quantity of Hg2+ ions in aqueous phase was 30 μg and the best shaking time needed to extraction was 15 minutes. The stoichiometric studies showed that by using slope analysis method, mole ratio method and continueous variation method, the structure of ion pair complex extracted was a sandwich structure (Metal : Ligand) (M : L) 1 : 2 [Hg(4-CMePADI)2]2+( )2. There is no any linear relation for dielectric constant of organic solvent with distribution ratio. There is an effect for Solvent structure on the extraction method as well as salting out effect on the extraction by use lithium chloride, synergistic effect appear there is aparticipate of one molecule of tributyl phosphate (TBP) in ion pair complex extracted with structure [Hg(4-CMePADI)2(TBP)]2+( )2, as well as the extraction method was exothermic reaction. | ||
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