Comparative metal sorption equilibrium studies of metal-adipic acid systems on Amberlite IR-120 cation exchanger

Cation exchange effective equilibrium distribution coefficients(K’_d) of 18 metal ions with resin Amberlite IR-120 have been determined in varying adipic acid [H₂AA] concentrations, viz., 2.0×10⁻²-7.6×10⁻²M [H₂AA]. Separation factors of metal ion species were calculated and some possible binary separations were worked out on the basis of their K’_d values. An entirely different approach has been proposed for the association of adipate anion involving its partial exchange with the resin site along the complexation of the metal species.