Biological production of ethanol from coal
Research is continuing in attempting to increase both the ethanol concentration and product ratio from the C. ljungdahlii fermentation. Both batch and continuous reactors are being used for this purpose. The purpose of this report is four-fold. First, the data presented in PETC Report No. 2-4-91 (June--September 1991) are analyzed and interpreted using normalized specific growth and production rates. This technique eliminates experimental variation due to the differences in inoculum history. Secondly, the effects of the sulfur gases H{sub 2}S and COS on the performance of C. ljungdahlii are presented and discussed. Although these are preliminary results, they illustrate the tolerance of the bacterium to low levels of sulfur gases. Thirdly, the results of continuous stirred tank reactor studies are presented, where cell and product concentrations are shown as a function of agitation rate and gas flow rate. Finally, additional data are presented showing the performance of C. ljungdahlii in a CSTR with cell recycle.
- Research Organization:
- Arkansas Univ., Fayetteville, AR (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-89PC89876
- OSTI ID:
- 5065184
- Report Number(s):
- DOE/PC/89876-T14; PETC-2-5-91; ON: DE92016116
- Country of Publication:
- United States
- Language:
- English
Similar Records
Biological production of ethanol from coal. [Quarterly report], September 22, 1991--December 21, 1991
Biological production of ethanol from coal. [Quarterly technical report], September 22, 1991--December 21, 1991
Related Subjects
10 SYNTHETIC FUELS
59 BASIC BIOLOGICAL SCIENCES
ACETATES
QUANTITY RATIO
COAL
BIOCONVERSION
ETHANOL
SYNTHESIS
YIELDS
SYNTHESIS GAS
BIOREACTORS
CARBON OXYSULFIDE
CHEMICAL REACTION KINETICS
CLOSTRIDIUM
CULTURE MEDIA
FERMENTATION
HYDROGEN SULFIDES
PROGRESS REPORT
STIRRING
ALCOHOLS
BACTERIA
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBOXYLIC ACID SALTS
CHALCOGENIDES
DOCUMENT TYPES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
KINETICS
MATERIALS
MICROORGANISMS
ORGANIC COMPOUNDS
REACTION KINETICS
SULFIDES
SULFUR COMPOUNDS
010408* - Coal
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100200 - Synthetic Fuels- Production- (1990-)
550700 - Microbiology