SOLVENT EXTRACTION OF COPPER(II) WITH THE ACTIVE COMPONENT OF LIX 54. SYNERGIC EFFECT IN THE PRESENCE OF TRI-n-OCTYLPHOSPHINE OXIDE. |
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| Authors: | M.J. Zapatero M.A. Olazabal M.P. Elizalde J.M. Castresana |
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| Affiliation: | Depto Qui'mica Analitica , Universidad del Pafs Vasco , Apdo 644, Bilbao, 48080, Spain |
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| Abstract: | The extraction of Cu(II) from nitrate medium of ionic strength 1.0 mol.dm-3 by l-phenyl-l,3-decanedione (HR) and by the mixture 1-phenyl-l,3-decanedione and tri-n-octylphosphine oxide (TOPO), dissolved in toluene, has been studied by distribution methods. The experimental data treated both graphical and numerically can be explained assuming the formation in the organic phase of the species CuR2 and Cu(NO3)R. The synergic effect found in the presence of TOPO has been explained by the formation of the complex CuR2(TOPO). Equilibrium extraction constants for the species are given. |
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