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Hydrodynamics and oxygen transfer in pneumatic bioreactor devices
Author(s) -
Chisti M. Y.,
MooYoung M.
Publication year - 1988
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.260310514
Subject(s) - airlift , bubble , bioreactor , mass transfer , chemistry , chromatography , oxygen , newtonian fluid , mechanics , chemical engineering , materials science , physics , engineering , organic chemistry
Gas holdup and oxygen transfer studies in non‐Newtonian suspensions of cellulose fibres conducted in two large (0.098 m 3 each) reactors are described. Both reactors—a bubble column and a similar internal loop airlift—were unusual in that they had rectangular cross‐sections. In all cases gas holdups and k L a L declined with increasing solid concentration and, under identical conditions, the bubble column performed better than the airlift. The fluid systems used were carefully selected to represent mould fermentation broths. The behavior of true mass transfer coeffcient k L with changes in bubble size is discussed for these systems.