Comparative equilibrium and kinetics of an alkylated hydroxy quinoline and a β hydroxy oxime for the extraction of copper

In an earlier presentation,1 preliminary comparisons were made of the solvent extraction equilibrium and kinetics of copper extraction by a proprietaryβ hydroxy benzophenone oxime, LIX65N,* and an alkylated hydroxy quinoline (Kelex 100).** The preliminary studies also included the effect of the addition of an aliphatic hydroxyoxime, LIX63,* to theβ hydroxy benzophenone oxime and of nonyl phenol to the alkylated hydroxy quinoline. The present work has resulted from continued studies of these complex extraction systems and presents further data that should be of interest to those using these systems. D. N. Okuhara was formerly Research Assistant, Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario.