Kvasny Prum. 1980; 26(12): 276-280 | DOI: 10.18832/kp1980046

Performance characteristics of a multistage tower fermentor under conditions of higher viscosities of liquid phase.Peer-reviewed article

J. PÁCA

The effects of viscosity and impeller speed on the degree of homogeneity, backflow coefficient and oxygen transfer rate in individual stages of a multistage, tower fermentor with mechanical mixing, were studied. The viscosity was simulated by aqueous solutions of glycerol. The results showed that an increase of viscosity of the liquid phase decreased the magnitude of both backflow coefficient and oxygen transfer rate. However, when a definite limit of viscosity is exceeded, value of oxygen transfer rate is no more dependent on the viscosity. At higher viscosities there appeared a significant effect of dilution rate on the degree of homogeneity in the compartment of the fermentor.
(In Czech, English summary only)

Keywords: tower fermentor, viscosity, liquid medium

Published: December 1, 1980