Electrodialytic removal of H2SO4 from its aqueous mixture with Na2SO4

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The experimental results of the separation of sulfuric acid from sodium sulfate by the membrane electrolysis method have been presented. The anion-exchange membrane Neosepta ACM has been used. It has been found that the current efficiency of H2SO4 removal is similar for pure acid solution and for the mixture H2SO4-Na2SO4 if the initial acid concentrations are the same. For the same current density effectiveness of H2SO4 removal is higher for lower initial acid concentration (63% for 0.5 M and 56% for 1 M (j = 100 mA/cm2).

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Copernican Letters, Vol. 1, pp. 90-94

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