Fluidized-bed bioreactors using a flocculating strain of Zymomonas mobilis for high-productivity ethanol fermentation

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5571198

Scott, C D

The flocculating strain of Zymomonas mobilis (NRRL B-12526) has been shown to form stable floc particles that can effectively convert glucose to ethanol at rates in excess of 400 g/L.h in a fluidized-bed bioreactor. The system is so reactive that the CO/sub 2/ off-gas makes it difficult to maintain high biomass loading in the upper part of the reactor, thus, resulting in a reduced ethanol productivity that approaches 100 g/L.h for the entire active reactor volume when over 95% of the glucose is metabolized. An increase in biomass loading and the use of a glucose feed concentration in excess of 150 g/L will undoubtedly result in even high levels of ethanol productivity. 12 references, 6 figures, 2 tables.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5571198
• Report Number(s): CONF-820993-2-Draft; ON: DE84000207
• Country of Publication: United States
• Language: English

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59 BASIC BIOLOGICAL SCIENCES
ALCOHOLS
ALDEHYDES
BACTERIA
BIOCHEMICAL REACTION KINETICS
BIOCONVERSION
BIOREACTORS
CARBOHYDRATES
DATA
ETHANOL
EXPERIMENTAL DATA
FERMENTATION
FLOCCULATION
FLUIDIZED BED REACTORS
FUEL DISPERSION REACTORS
GLUCOSE
HEXOSES
HOMOGENEOUS REACTORS
HYDROXY COMPOUNDS
INFORMATION
KINETICS
MICROORGANISMS
MONOSACCHARIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
PRECIPITATION
PRODUCTION
PRODUCTIVITY
REACTION KINETICS
REACTORS
SACCHARIDES
SEPARATION PROCESSES
ZYMOMONAS MOBILIS