Removal of zinc fromcyanide barren solution is obligatory for its reuse in leach process. Batch experimentswere
carried out to evaluate the adsorption capacity of resins under different experimental conditions, including concentration,
resin amount, initial pH, contact time and temperature. More than 99% of adsorption was achieved
under the optimal condition. High adsorption rates on the resin were observed at the beginning and plateau
values were obtained in 60 min. The thermodynamic parameters (free energy change ΔG, enthalpy change ΔS
and entropy change ΔH) for the adsorption were evaluated. The adsorption kinetic mechanism was studied
with four models. The experimental results show that the adsorption follows the Langmuir isotherm and the
kinetics follows the pseudo-second-order model.
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