ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Electrodialysis of oxalic acid: batch process modeling

Jiří Kaláb and Zdeněk Palatý

Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic

E-mail: Zdenek.Palaty@upce.cz

Abstract: Batch electrodialysis of aqueous solutions of oxalic acid was investigated using a laboratory electrodialyzer ED-Z mini equipped with ion-exchange membranes Ralex-AMH-PES and Ralex-CMHPES (Mega, Stráž pod Ralskem, Czech Republic). The paper presents a mathematical model which enables to predict changes in the oxalic acid concentrations in the diluate and concentrate compartments during the electrodialysis process under various conditions specified by combinations of the initial acid concentrations with current densities. The calculation proved a good agreement between the developed model and the experimental results.

Keywords: oxalic acid – batch electrodialysis – mathematical modeling

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-012-0232-5

Chemical Papers 66 (12) 1118–1123 (2012)