Abstract
The sorption of sulfuric acid on Amberlite IRA 67 and (2) Lewatit VP.OC.1072 weakly basic polyacrylic anionites in the free-base form was studied. It was demonstrated that the bisulfate form of the anionites was not produced. In contrast to the sorption of hydrochloric acid, the solution of resinates formed during the sorption of sulfuric acid is nonideal. A model of exchange of doubly charged anions on fixed singly charged ion-exchange sites of polyacrylic anionites was developed based on the theory of ion-exchange equilibria. The model was used to analyze the isotherms of equilibrium sorption of sulfuric acid on IRA 67 and Lewatit VP.OC.1072 anionites in the free-base form.
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