Ethanol production by Zymomonas mobilis in a tapered-bed bioreactor

Technical Report · Sun Feb 01 00:00:00 EST 1981

OSTI ID:6885173

Sitchin, R; Gubanc, P F; Tormo, Jr, J V

The fermentation of glucose to ethanol by the bacterium Zymomonas mobilis was studied. A tapered bioreactor containing an anion exchange resin, to which bacteria were attached, was fluidized by feed solution at 35/sup 0/C. Short residence times characteristic of the experimental tapered reactor were necessary to model various differential segments of a hypothetical large-scale reactor. A feed concentraton of 10% glucose as well as glucose/ethanol mixtures were studied. Ethanol production ranged from 29 g/liter-h for a feed containing 2% weight per volume glucose to 64 g/liter-h for a 10% glucose feed. Development of biomass concentration-measurement techniques was begun. Caustic stripping, DNA analysis, and dehydrogenase determinations were attemped, but results were inconclusive.

• Research Organization: Massachusetts Inst. of Tech., Oak Ridge, TN (USA). School of Chemical Engineering Practice
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6885173
• Report Number(s): ORNL/MIT-320
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
59 BASIC BIOLOGICAL SCIENCES
ETHANOL
BIOSYNTHESIS
FERMENTATION
BIOCHEMICAL REACTION KINETICS
GLUCOSE
BACTERIA
CHEMICAL ANALYSIS
CHEMICAL REACTORS
DNA
EXPERIMENTAL DATA
IMMOBILIZED CELLS
ION EXCHANGE MATERIALS
LOADING
MATHEMATICAL MODELS
OXIDOREDUCTASES
QUANTITY RATIO
RESINS
ALCOHOLS
ALDEHYDES
BIOCONVERSION
CARBOHYDRATES
DATA
ENZYMES
HEXOSES
HYDROXY COMPOUNDS
INFORMATION
KINETICS
MATERIALS
MATERIALS HANDLING
MICROORGANISMS
MONOSACCHARIDES
NUCLEIC ACIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
REACTION KINETICS
SACCHARIDES
SYNTHESIS
090222* - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
550200 - Biochemistry
550700 - Microbiology