LIQUID- LIQUID EXTRACTION METHOD FOR EXTRACTION ZN(II) FROM AQUEOUS SOLUTIONS BY ORGANIC REAGENT
Sahar A. Hussein*, R. K. Al-Kubaisy, Taghreed H. Al-Noor, Hawraa K. Musa, Hadier K. Mubarak and Hayder Yaseen Noor
ABSTRACT
Extraction experiments for Zn+2 ion from aqueous phase by new
laboratory prepared Azo derivation as complexation agent 2- [(4-
Benzyloxy phenyl)azo]- 5- nitro-4-phenyl imidazole (BANI) shows the
optimum conditions for this extraction method was (pH= 9) (10
minutes) shaking time and 100μg (1.5x10-4M) concentration of Zn+2
ion in aqueous phase. Organic solvents effect study shows there is not
any linear relation between distribution ratio (D) for extraction of Zn+2
ion and dielectric constant (ε)for organic solvents used but there is un
effect for organic solvent structure on the extraction of Zn+2 ion and
distribution ratio (D) values. Stoichiometric studies demonstrated the
more probable structure ion pair complex extracted for Zn+2 was 1:1.
Keywords: Zn (??), Solvent extraction, azo ligand.
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