Ethanol production by Zymomonas mobilis and its application on an industrial scale

Conference · Sun Jan 01 04:00:00 EST 1984 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:6451535

Bringer, S; Sahm, H; Swyzen, W

A continuous culture of Zymomonas mobilis produced 60 g/l ethanol over a test period of 39 days. In the presence of oxygen and at ethanol concentrations exceeding 64 g/l, the substrate conversion was incomplete due to growth inhibition. The Zymomonas fermentation was used for ethanol production from an industrial, enzymatically hydrolyzed wheat starch fraction. Continuous cultures converted this substrate with productivities of up to 4.5 g/l.h at ethanol concentrations of 56-60 g/l. The fermentation of glucose derived from wheat starch has been scaled up to 50 cubic m in an industrial plant. Continuous operation has been possible up to 20 days. Disturbances to the process may be mainly due to the presence of lactic acid bacteria in the substrate feed.

• Research Organization: Institute fuer Biotechnologie der Kernforschungsanlage, Juelich, Germany, F.R.; Pfeifer and Langen, Dormagen, Germany, F.R.
• OSTI ID: 6451535
• Report Number(s): CONF-840509-
• Conference Information: Journal Name: Biotechnol. Bioeng. Symp.; (United States) Journal Volume: 16:14
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
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550700 -- Microbiology
59 BASIC BIOLOGICAL SCIENCES
ALCOHOLS
ALDEHYDES
BACTERIA
BIOCONVERSION
BIOSYNTHESIS
CARBOHYDRATES
CHEMICAL REACTIONS
CONTINUOUS CULTURE
DECOMPOSITION
ENZYMATIC HYDROLYSIS
ETHANOL
FERMENTATION
GLUCOSE
GROWTH
HEXOSES
HYDROLYSIS
HYDROXY COMPOUNDS
INHIBITION
LYSIS
MICROORGANISMS
MONOSACCHARIDES
ORGANIC COMPOUNDS
POLYSACCHARIDES
PRODUCTIVITY
REAGENTS
SACCHARIDES
SOLVOLYSIS
STARCH
SUBSTRATES
SYNTHESIS
ZYMOMONAS MOBILIS