MODELING ELECTRODIALYSIS USING THE MAXWELL-STEFAN DESCRIPTION

The Maxwell-Stefan mass transfer description is applied to two electro dialysis systems. Firstly, a model system involving NaCl and HCl is in vestigated. For this system, all the model parameters are obtained eit her from separate experiments or existing correlations. Although it is not possible to determine all the parameters accurately, the values f ound are all within the ranges expected.Secondly, a two amino acid sys tem is investigated. The separation of two amino acids using electrodi alysis is found to be feasible. Unfortunately, it is too difficult to obtain sufficient data for a proper quantitative description of the pr ocess. In both cases, the Maxwell-Stefan description appears to provid e a thorough model of the electrodialysis process.