Ion Exchange in Countercurrent Electrolysis in a Porous Membrane

Abstract

In many sepration processes for electrolytes the economy of the process could be improved if ion exchange could be carried out simultaneously with the separation without additional stages; i.e., when, for instance, separating potassium chloride from a mixture of sodium and potassium chlorides, the anion could be replaced by the hydroxyl ion, thus producing, instead of potassium chloride, more valuable potassium hydroxide. In fact, in the separation of cations an often desired ion-exchange reaction is the abovbe-mentioned replacement of some anion by the hydroxyl inon.