The overall metal recovery also depends on the metal elution.Efficiency of the adsorbed metals. Elution efficiency was defined.In this study as the, ratio of the mass desorbed from the resins to.The mass adsorbed onto the resins. Table 4 compares the elution.Of nickel adsorbed on Purolite S950. The effects of variables.Including the nature of, the complexes metal (100 - 2000 mg / L).And acid concentrations (0.01 and 0.1 M) on metal elution were.Considered in this investigation. As shown nickel complexes,,Were easily eluted from the resins; elution efficiencies of about.90% were achieved. In general similar elution, efficiencies of.Nickel were achieved when adsorbed from various complexes.And metal concentrations. Co-complexes were also found to be.Efficiently eluted from the resin (up to 98%) (see Table 5). It.Is clear the nature, of the ligand complexed to Co and Ni and.Metal concentrations have little effect on the cobalt desorption.This suggests the exchange reactions are equivalent for the three.Complexes considered in this study and that surface interaction.Between the resin and the metal complexes are independent of.The metal speciation. Efficient elution of the metal complexes.From the resin suggests the metal complexes interaction with.The resin is based on weak bonds.
การแปล กรุณารอสักครู่..