Ethanol production in a fluidized-bed bioreactor utilizing flocculating Zymomonas mobilis with biomass recycle

Conference · Sat Jan 01 04:00:00 EST 1983 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:7077481

Scott, C D

Bench-scale, fluidized-bed bioreactor systems are being used to convert glucose to ethanol by particles of a flocculating strain of Zymomonas mobilis; ethanol production rates in excess of 600 g/l-h have been achieved. The systems have been operated successfully for extended periods (500 h) while using unsterilized feed with glucose concentrations in the range 100 to 160 g/l. The primary bioreactor was also operated in the absence of necessary nutrients but coupled to a small secondary reactor in which the biomass particles were recycled and exposed to small amounts of the nutrients. 11 references, 6 figures, 3 tables.

• Research Organization: Oak Ridge National Lab., TN
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 7077481
• Report Number(s): CONF-830567-
• Conference Information: Journal Name: Biotechnol. Bioeng. Symp.; (United States) Journal Volume: 13
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
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59 BASIC BIOLOGICAL SCIENCES
ALCOHOLS
ALDEHYDES
BACTERIA
BENCH-SCALE EXPERIMENTS
BIOCONVERSION
BIOMASS
BIOREACTORS
CARBOHYDRATES
CARBON
CHEMICAL ANALYSIS
DESIGN
ELEMENTS
ENERGY SOURCES
ETHANOL
FERMENTATION
FLOCCULATION
FLUIDIZED BED
GLUCOSE
HEXOSES
HYDROXY COMPOUNDS
IMMOBILIZED CELLS
MATERIAL BALANCE
MICROORGANISMS
MONOSACCHARIDES
NONMETALS
NUTRIENTS
OPERATION
ORGANIC COMPOUNDS
PH VALUE
PRECIPITATION
PRODUCTION
QUANTITY RATIO
RECYCLING
RENEWABLE ENERGY SOURCES
SACCHARIDES
SEPARATION PROCESSES
ZYMOMONAS MOBILIS