Abstract
Sorption equilibrium of phosphoric acid by strongly basic anion-exchange membrane (SELEMION AMV) was studied to determine the selectivities of ionic species of phosphoric acid. The sorption of phosphoric acid by the membrane increased with increase in the phosphate concentration in the solution and pH. The sorption characteristics were successfully explained by the ion-exchange model considering the dissociation of phosphoric acid in the solution, electro-neutrality in the solution and in the membrane, and material balances of chemical species.
