Author/Authors :
Ziyadanoğulları, Berrin Dicle University - Faculty of Arts and Sciences - Chemistry Department, Turkey , Ceviziçi, Deniz Dicle University - Faculty of Arts and Sciences - Chemistry Department, Turkey , Temel, Hamdi Dicle University - Dicle University Science and Application Research Center (DUBTAM), Turkey , Yılmaz, M Abdullah Dicle University - Dicle University Science and Application Research Center (DUBTAM), Turkey
Title Of Article :
A new tetradentate N2O2-type Schiff base ligand and structure effects on preconcentration and extraction of N,N -Bis(salicylaldehydene)-1,4-bis-(o- aminophenoxy) butane towards some divalent cations
Abstract :
The new Schiff base, was synthesized by reaction of 1,4-bis(o-aminophenoxy) butane and salicylaldehyde. Microanalytical data, elemental analysis, UV, visible, 1H n.m.r. and ^13C n.m.r. and IR spectra were used to confirm the structures. Separation with solvent extraction of Cu(II), Co (II) and Ni(II) from aqueous solution using N,N -bis(salicylaldehydene)-1,4-bis-(o-aminophenoxy)butane (H2L) as the new extractant has been studied. The extractability and selectivity of divalent cations was evaluated as a function of relationship between distribution ratios of the metal and pH or ligand concentration. Cu^+2 showed the highest extractability and selectivity at pH 7.4, whereas Ni^+2 and Co^+2 showed at pH 9.2. From the loaded organic phase, Cu(II), Co (II), Ni(II) stripping were carried out in one stage with aqueous acid solution including various concentrations of HCI. The stripping efficiency was found to be quantitative in case of 1.5 M HCI. From quantitative evaluation of the extraction equilibrium data, it has been deduced that the complexes extracted are the simple 1:1 chelates, CuL, CoL, NiL
NaturalLanguageKeyword :
Schiff bases , Extraction , Preconcentration
JournalTitle :
dicle university journal of institute of natural and applied science