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Liquid level control in an aerated continous‐flow fermentor
Author(s) -
Anderson K. W.,
Grulke E.,
Gerhardt Philipp
Publication year - 1985
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.260270628
Subject(s) - aeration , fermentation , microfiltration , volume (thermodynamics) , volumetric flow rate , process engineering , controller (irrigation) , flow (mathematics) , environmental science , bioreactor , peristaltic pump , pulp and paper industry , industrial fermentation , chromatography , chemistry , control theory (sociology) , computer science , mechanics , waste management , engineering , control (management) , biology , mechanical engineering , food science , biochemistry , physics , thermodynamics , membrane , agronomy , organic chemistry , artificial intelligence
An electronic liquid level control system was developed to maintain constant working volume in a continuously fed and aerated fermentor from which spent medium was continously withdrawn by microfiltration in an external recycle loop. The level control system was comprised of an admittance sensor in the fermentor and an external transmitter and controller, which together regulated the speed of a recycle pump and thus the rate of liquid withdrawal from the fermentor. During test bacterial culture the liquid level was maintained usually within ± 1% and always within ± 5%. The control system could be applied to various other types and scales of continuous‐flow fermentors.