Solvent extraction of Cu(II) by LIX 54-100 and its application to a solid supported liquid membrane system

Abstract

The extraction of Cu(II) by LIX 54-100 (β-diketone) in Iberfluid (kerosene type diluent) from ammoniacal/ammonium sulphate solutions has been investigated. The analysis of metal distribution data suggested the formation of CuR2 species in the organic phase with formation constant log K(ext)= -6.15. The results obtained on Cu(II) distribution have been implemented in a solid supported liquid membrane system, using H2SO4 solutions (e.g. 0.9 mol/l) to strip the metal from the organic solution.