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Membrane Water Treatment
  Volume 1, Number 1, January 2010, pages 39-47

Permeability of anion-exchange membrane for Cl- ions. Dialysis of hydrochloride acid in the presence of nickel chloride
Zdenk Palaty and Helena Bendova

    Using a conventional two-compartment cell with stirrers the separation of an aqueous solution of HCl-NiCl2 by an anion-exchange membrane Neosepta-AFN was investigated. The dialysis process was characterized by the permeability coefficient of the membrane towards to Cl? ions. This quantity was determined by the numerical integration of equations, which describe the time dependence of the total concentration of Cl? ions in compartment initially filled with stripping agent (water), combined with an optimizing procedure. The analysis of the experimental results showed that this permeability coefficient is a satisfactory characteristic for the process studied. It can be graphically correlated with the initial acid and initial salt concentrations in the compartment initially filled with acid+salt mixture.
Key Words
    batch dialysis; hydrochloric acid; nickel chloride; permeability of membrane; anion-exchange membrane.
Zdenk Palaty and Helena Bendova; Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 532 10 Pardubice, Czech Republic

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