Collect. Czech. Chem. Commun. 1983, 48, 1984-1995

Production of biomass from sulphite liquors in tower fermentor with forced circulation

Jindřich Zahradníka, Mojmír Rychterab, Jan Kratochvíla, Ludmila Havlíčkováa and Jan Čermáka

a Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol
b Department of Fermentation Chemistry and Bioengineering, Prague Institute of Chemical Technology, 166 28 Prague 6


Cultivation of the yeast Candida utilis on sulphite liquors was studied in a tower fermentor with ejector-type gas distributor and additional bubble bed showering. The aim of the work was to test the fermentor applicability for the cultivation process studied and to obtain data characterizing the fermentation in the tested unit. The effect of medium composition and dilution rate on selected cultivation parameters was determined in the fermentor with active volume 0.1 m3 and the hydrodynamic and energy characteristics of the apparatus were evaluated. The experimental results proved the fermentor to be suitable for the cultivation process studied. Favourable effect of the optimized fermentation medium was observed both on the values of characteristic cultivation parameters and on the efficiency of the utilization of energy supplied to the system.