Abstract
The effect of electrokinetic potential for the removal performance of suspended corrosion products in strong basic anion exchange resins was studied. The removal characteristics were obtained in various kinds of counter ions, ionic concentration of the solution and pH by means of batch and filtration experiments.
In electrolyte solution, the removal performance of γ-FeOOH in anion exchange resin was effected by the Zeta potential and varied with the kinds of anions in the solution. In the pure water, the Zeta potentials of the resin with counter ions OH-, Cl- or SO42- were almost the same if the resins were washed well after absorbing these ions. The OH type anion exchange resin, however, indicateded a larger removal performance of γ-FeOOH than Cl and SO4 type resins because of its higer pH on the resin surface.
The effect of electrolyte concentration depended on the kind of electrolyte and pH. This could be explained by (i)the potential energy calculated by using the measured values of Zeta potential and, (ii) the resin surface pH which was influenced by the ionic concentration in the solution.