Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 469, Issue -, Pages 428-435Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2014.07.008
Keywords
Fumaric acid; Biotechnological conversion of glycerol; Bipolar electrodialysis; Ion-exchange membranes; limiting current density
Categories
Funding
- project Biotechnological conversion of glycerol to polyols and dicarboxylic acids, implemented within the Operational Programme-Innovative Economy
- European Union [PO IG 01.01.02.074/09]
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Separation of fumaric acid from fermentation broth was carried out by bipolar electrodialysis using a laboratory ED set-up with an effective membrane stack area of 64 cm(2). The limiting current density was calculated on the basis of experimental current-voltage curves and optimal conditions of the process performance were proposed. Bipolar electrodialysis of post-fermentation broth from biotechnological conversion of glycerol was preceded by preliminary experiments regarding monocomponent, binary and ternary model solutions of fumaric acid. The influence of current density, pH and composition of fumaric acid model solutions on the efficiency of the process was analysed and discussed. Results of this report have proven that bipolar electrodialysis can be used as one of the purification steps towards recovery of fumaric acid from fermentation broth. (C) 2014 Elsevier B.V. All rights reserved
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