Studies on Ion Transport of Eu (III) and Gd (III) Through Supported Liquid Membranes Containing Di-(2-ethylhexyl) Phosphate, as a Carrier
Keywords:
Europium, gadolinium, supported liquid membranesAbstract
Abstract. In this work, permeation of Eu (III) and Gd (III) between aqueous oxide solutions through supported membrane containing di-(2-ethylhexyl) phosphate as a carrier and kerosen has been studied. Mass transfer of these cations has been determined in terms of permeability coefficients (P) by measurement of metal concentrations in strip solution. The permeability coefficient increases with increase in pH acidity of feed solution ranged from pH 0.5 to 2.5 while that of strip solution was kept constant at 0.1 mol L-1 HNO3. Thus, the results obtained show that it is possible to get up to 93% of percentage of extraction.
Resumen. En este trabajo, se estudió la permeación de Eu (III) y Gd (III) a partir de soluciones acuosas de óxidos, mediante una membrana líquida soportada conteniendo di-(2-etil hexil) fosfato como portador y queroseno. Se determinó la transferencia de masa de estos cationes en términos del coeficiente de permeabilidad (P) mediante la determinación de la concentración en la solución de despojo. Se observó que el coeficiente de permeabilidad incrementa con el incremento del pH ácido de la solución en un rango de pH de 0.5 a 2.5. La solución de despojo se mantuvo constante a 0.1 mol L-1 de HNO3. Los resultados obtenidos mostraron que es posible obtener porcentajes de extracción del 93%.
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