Ion Exchange Separation of Eu3+ from Different Salt Solutions

Two samples of potassium zinc hexacyanoferrate were prepared using two different ratios of the initial materials. The distribution coefficient of Eu3+ on the two samples was determined. The effect of the cation concentration in the aqueous phase on the adsorption of Eu3+ was also studied. The mechanism of the exchange process was described on the light of the data obtained, and the equilibrium constant of the exchange reaction was also calculated.