Use of immobilized cells of Zymomonas mobilis in a novel fluidized bioreactor to produce ethanol
A novel 2-L fluidized bioreactor was designed and built and its performance characteristics were compared with those of an ordinary stirred-tank bioreactor. Calcium alginate beads containing immobilized cells of Zymomonas mobilis were used in both types of bioreactors to produce ethanol from glucose. The Ca-alginate beads were exposed to low shear rates inside the fluidized bioreactor and as a result the cell leakage from the beads was found to be about 100 times less than the cell leakage obtained in the mechanically stirred bioreactor. For the operating conditions studied, the fluidized bioreactor system gave at least 64% higher maximum rate of ethanol production and the power consumption per unit volume was found to be about four times less than that obtained with the mechanically stirred bioreactor. 9 figures, 1 table.
- Research Organization:
- Univ. of Western Ontario, London
- OSTI ID:
- 6010023
- Report Number(s):
- CONF-820580-
- Journal Information:
- Biotechnol. Bioeng. Symp.; (United States), Vol. 12; Conference: 4. symposium on biotechnology in energy production and conservation, Gatlinburg, TN, USA, 11 May 1982
- Country of Publication:
- United States
- Language:
- English
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Ethanol production from an industrial feedstock by immobilized Zymomonas mobilis in a fluidized-bed bioreactor
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Related Subjects
59 BASIC BIOLOGICAL SCIENCES
BIOREACTORS
COMPARATIVE EVALUATIONS
ETHANOL
BIOSYNTHESIS
ZYMOMONAS MOBILIS
IMMOBILIZED CELLS
BIOCONVERSION
FLUIDIZED BED
GLUCOSE
LEAKS
ALCOHOLS
ALDEHYDES
BACTERIA
CARBOHYDRATES
HEXOSES
HYDROXY COMPOUNDS
MICROORGANISMS
MONOSACCHARIDES
ORGANIC COMPOUNDS
SACCHARIDES
SYNTHESIS
090222* - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)
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550700 - Microbiology