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Research Article

ECB. 2019; 8(8): 270-273


SUPPORTED LIQUID MEMBRANE EXTRACTION OF TERBIUM(III) BY CYTOS IL102/D2EHPA (TRIHEXYLTETRADECYLPHOSPHONIUM BROMIDE/DI(2- ETHYLHEXYL) PHOSPHATE) EXTRACTANT MIXTURE

Mohamed A. Didi, Sid Ahmed Elhabiri.




Abstract

We have developed a membrane impregnated with ionic liquid Cytos IL102/D2EHPA (trihexyltetradecylphosphonium bromide/di(2- ethylhexyl) phosphate) for the extraction of Tb(III) from aqueous solutions at different pH values. Various parameters such as the mixing effect Cytos IL102/D2EHPA, the initial terbium concentration, the stirring speed and the extraction time have been studied. The amount of Tb(III) retained per gram of extractant (Cytos IL102/D2EHPA) is 4.37 mg g-1 for a concentration of Tb(III) of 10-3 M. The optimal yield was obtained at 240 min and stirring speed at 900 rpm.

Key words: Terbium(III); trihexyltetradecylphosphonium di(2-ethylhexyl) phosphate (D2EHPA); trihexyl (tetradecyl)phosphonium bromide(Cytos IL102); membrane extraction; ionic liquid.






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