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CSME 2005/03
Volume 3, No.1 : 19-25
DOI:10.6703/IJASE.2005.3(1).19  
TxTirznx FxrTxntztion of Lzttit ztiK

Lxvxntx L. DioPady a and Taya Puzanov a
aDxpartPxnt of ZAxPiZal-xnginxxring and Applixd ZAxPiPtry, UnivxrPity of Toronto, 200 Zollxgx Pt., Toronto, Ontario, Zanada P5P 3x5


Abstract: In the continuous membrane fermentation of Lactobacillus rhamnosus at biomass concentrations above 100 g/L the viscosity of the system increased sharply resulting in decreased permeate flux. At cell densities higher than 108 g/L a slight deviation from Newtonian behaviour was observed. Steady state was achieved and main kinetic characteristics remained constant for around 100 hours when the biomass concentration was maintained at a constant level by continuous bleeding.


Keywords:  biomass bleeding; membrane fermentation; Lactobacillus rhamnosus; viscosity; rheology.

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*Corresponding author; e-mail: diosady@chem-eng.utoronto.ca
© 2005  CSME , ISSN 0257-9731 





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