Abstract
The chelating ion exchange resin AFM was synthesized by condensation of anthranilic acid with formaldehyde and m‐cresol in DMF media at 100 oC ± 6°C. The identification of resin structure was performed by elemental and FTIR analysis. The thermodynamic parameters such as activation energy (Ea), entropy (S*), enthalpy (H*) and free energy (G*) for thermal decomposition were calculated from thermal data. The morphology of AFM resin shows transition material between crystalline and amorphous phase. The rate of exchange was rapid. i.e. t1/2 < 22 min for Pb(II) and pH dependence of exchange of metal ions on the resin has been determined for several metal ions [Ni(II), Cu(II), Zn(II), Cd(II) and Pb(II)]. Successive separations and recovery of some pair of metal ions [Pb(II)‐Cd(II), Pb(II)‐Zn(II) and Zn(II)‐ Cu(II)] have been performed by using distribution coefficient (Kd).
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