Kvasny Prum. 1980; 26(10): 222-226 | DOI: 10.18832/kp1980037

Bioengineering characteristics of sulphite liquors. II. Oxygen transfer rate and cultivation tests.Peer-reviewed article

J. PÁCA, P. KUJAN, V. MATĚJŮ

The aim of this study was to find changes of the volumetric oxygen transfer coefficient in calcium- and natrium-bisulphite liquors as a function of the soluble dry mater concentration and increased salt concentrations due to neutralization and essential nutrient and ethanol addition necessary for a further microbial treatment. In addition, growth characteristic of the yeast Candida utilis in continuous cultures using the new type of natrium-bisulphite liquors were tested. The results showed that the K_La value decreased with increasing soluble dry matter concentrations. Changes in K_La coefficient were affected not only due to salts and ethanol additions but also due to the type and quantity of the agent used for a neutralization. Cultivation tests proved that using natrium-bisuiphite liquors the following culture conditions, from the standpoint of biomass production, can be used: pH from 5,5 to 6,0 nod dilution rate of about 0,3 h^-1.
(In Czech, English summary only)

Keywords: bionengineering, sulphite liquors, oxygen

Published: October 1, 1980