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The influence of the tower air-lift bioreactor geometry on the oxygen transfer rate in the apparatus

100%

Gluszcz P., Michalski H.

Biotechnologia

1993

issue 3

16-30

The hydrodynamic and mass transfer parameters in water, in several types of tower-loop air-lift bioreactor were investigated. The following configurations of the apparatus were used for experiments: with , internal-loop with static mixers in the draft tube, with various circulation tube diameters (0 more thet Ad/Ar more thet 1), external-loop with perforated plates in the main zone (multistage reactor). The highest kla coefficients were-loop with perforated plates in the main zone (multistage reactor). The highest kla coefficients were obtained in external-loop multistage reactor. Ad/Ar ratio had significant influence on the main process parameters: , , transfer coefficient and mixing time.

Engineering aspects of the A.Niger cultivation in a tower air-lift bioreactor

81%

Gluszcz P., Jamroz T., Sencio B.

Biotechnologia

1993

issue 3

38-47

Changes of the main hydrodynamical and parameters during. in a pilot plant external-loop were investigated. the final average concentrations of biomass and citric acid obtained in experimental fermentations were 10.5g/l and 96.6 g/l, respectively. Significant influence of the increasing biomass concentration on the apparent viscosity of the broth, gas holdup, liquid velocity and volumetric oxygen transfer coeficient was found.

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2 Biotechnologia

2 1993

2 Gluszcz P.

1 Jamroz T.

1 Michalski H.

1 Sencio B.

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The influence of the tower air-lift bioreactor geometry on the oxygen transfer rate in the apparatus

Engineering aspects of the A.Niger cultivation in a tower air-lift bioreactor