Abstract
Abstract Transport of sulfates of divalent metals [M = Mn(II), Cu(II), Co(II), Ni(II)] in a system made up of multicomponent solution of MSO4 ∣ Nafion membrane∣sulfuric acid solution was studied. It was found that Donnan dialysis results in a recovery factor amounting to 80–90% with the concentration ratio CM. strip/CM, feed not less than 30. The results of M(II)/H countertransport were compared with the results of simple dialysis of single and multiionic solutions. The technique of Donnan dialysis is efficient in preconcentrating ions for further separation in a multimembrane hybrid system employing a specific carrier of ions.
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