On the Purificotion of Sea Water by Anion Exchange IV Removal of Sulfate Ion by Use of Strongly Basic Anin Exchange Resin

Abstract

The remoual of sulfate ion from sea water by use of HCO_3- form, strongly basic anion exchange resin, Amberlite IRA-410, was examined withbath equilibrium and purification studies.
In the equilibrium study, it was perfomed to study on the equilibrium between HCO₃ and SO₄. The enpirical formula was obtained as follows in the case of RHCO₃+SO₄ and L, the weight ratio of water to resin,=10 log Pso₄=0.28+1.32log Phco₃ where Pso₄ was the ratio of SO₄ in resin to SO₄ in solution.
From this formula and HCO₃-Cl formula on the preuious paper (III) [T. Yamabe and U. Shimojo, Bull. Sac. Salt Science, Japan 8, No.5, 223-226 (1954)], the theoretical removal efficiency of suefate ion proved to be 6.1%, when II of artificial sea water (in conposition, Nacl 30g/l, Na₂SO₄ 4g/l) was treated with HCO_3- fonu Amberlite IRA-410, wet uolume 100cc.