A study concerning the resin PUROLITE S-930 as a substrate to remove nickel and cobalt from sulphuric solution is herein presented. The influence of nickel and cobalt concentrations was studied, and the results have shown a greater selection of the resins for solutions rich in nickel (Ni 600 mg/L - Co 800 mg/L). The adsorption isotherms showed an increase in the resin adsorption capacity at higher temperatures (q max Ni 0.28 mol/L, at 70ºC and q max Co 0.18 mol/L, at 60ºC). The enthalpy values suggested endothermic physisorption. The Homogeneous Surface Diffusion Model (HSDM) was chosen for modeling the adsorption kinetics of metals in a fixed-bed column. The results showed good agreement with the model. Both, k f = 5.2x10-6 m/s and D S = 4.5x10-12 m²/s indicated that resin loading is based on transport through the boundary layer and porous diffusion in the resin.
Kinetic; adsorption; resin; nickel; cobalt
