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Liquid circulation in external‐loop airlift bioreactors
Author(s) -
Kawase Yoshinori
Publication year - 1990
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260350513
Subject(s) - airlift , mechanics , bioreactor , loop (graph theory) , thermal diffusivity , circulation (fluid dynamics) , materials science , newtonian fluid , chemistry , thermodynamics , physics , mathematics , organic chemistry , combinatorics
A simple model for prediction of liquid velocity in external‐loop airlift bioreactors has been developed. Theoretical correlations for friction factor of gas‐non‐Newtonian two‐phase flows and for liquid velocity in the riser were derived using the concept of an eddy diffusivity. The predictions of the proposed model were compared with the available experimental data for the friction factor and the liquid velocity in the riser of external‐loop airlift contactors. Satisfactory agreement was obtained.