Removal of Zn(II), Cu(II), Fe(II), and Sulphate Ions from Model Solutions Using Ion Exchange Resins

At present, a wide range of commercial resins is available for diverse applications, whether in both the food and industrial sector. However, limited information is available in the literature to scientifically evaluate the effectiveness and behaviour of new commercial resins under varying application conditions. In this study, the Purolite MB400 ion-exchange resin was investigated for its capacity to simultaneously remove metal cations (Cu, Zn, Fe) and sulphates from model solutions. The highest efficiency was observed in the CuSO4 model solution (10 mg/L), where Cu2+ removal reached 97.8% and SO42− removal 95.1%. However, increasing concentrations of metals and sulphates resulted in a gradual decline in removal efficiency.