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Enhancement of oxygen mass transfer in stirred bioreactors using oxygen-vectors 2. Propionibacterium shermanii broths |
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| Authors: | Anca-Irina Galaction Dan Cascaval Marius Turnea Elena Folescu |
| Affiliation: | (1) Faculty of Medical Bioengineering, Department of Biotechnology, University of Medicine and Pharmacy, University Street 16, 6600 Iasi, Romania;(2) Faculty of Industrial Chemistry, Department of Biochemical Engineering, Technical University “Gh. Asachi” of Iasi, D. Mangeron Avenue 71, 700050 Iasi, Romania |
| Abstract: | The previous works on simulated broths are continued and developed for Propionibacterium shermanii broths. The obtained results indicated the considerable increase of k L a in presence of n-dodecane as oxygen-vector and the existence of a certain value of hydrocarbon concentration that corresponds to the maximum mass transfer rate of oxygen. The magnitude of the positive effect of the oxygen-vector strongly depends on operational conditions of the bioreactor, on broth characteristics and on P. shermanii concentration. |
| Keywords: | Stirred bioreactor Oxygen-vector n-Dodecane k L a Propionibacterium shermanii |
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