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

Influence of alginate gel composition on the productivity of an immobilized yeast bioreactor

V. Báleš, A. Bukovská, L. Pach, J. Herain, and I. Langfelder

Department of Chemical Engineering, Faculty of Chemical Technology, Slovak Technical University, CS-812 37 Bratislava

Abstract: Yeast Saccharomyces cerevisiae PZ 43 CHTF was immobilized in beads formed from Ca-alginate gel. In the prepared alginate dispersion, the con­tent of Na-alginate and Si0₂ varied. The influence of the composition of alginate gel on the productivity of a continuous bioreactor was studied. In this bioreactor the maximum productivity was reached for immobilized yeast entrapped in the gel containing 1.5 mass % of Ca-alginate and 4.91 mass % of Si0₂ . Experiments in a fixed bed were carried out with various gels at equal conditions (pH = 4.5, temperature 28 °C, residence time 59.24 min, inlet concentration of D-glucose 100 g dm^-3 ). At these conditions, the maximum substrate conversion was 96.13 %, which corresponds to the productivity of 97.36 kg m^-3 h^-1

Full paper in Portable Document Format: 436a733.pdf

Chemical Papers 43 (6) 733–742 (1989)