U.S. Department of EnergyOffice of Scientific and Technical Information
Biological production of ethanol from coal
Abstract
Research is continuing in attempting to increase both the ethanol concentration and product ratio (acetate to ethanol) 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 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.
- Publication Date:
- Research Org.:
- Arkansas Univ., Fayetteville, AR (United States)
- Sponsoring Org.:
- USDOE; USDOE, Washington, DC (United States)
- OSTI Identifier:
- 5128200
- Report Number(s):
- DOE/PC/89876-T5; PETC-2-5-91
ON: DE92015664
- DOE Contract Number:
- AC22-89PC89876
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; 10 SYNTHETIC FUELS; 59 BASIC BIOLOGICAL SCIENCES; ACETATES; SYNTHESIS; ETHANOL; ANAEROBIC CONDITIONS; BIOREACTORS; CLOSTRIDIUM; FERMENTATION; HYDROGEN SULFIDES; PROGRESS REPORT; STIRRING; TEMPERATURE DEPENDENCE; ALCOHOLS; BACTERIA; BIOCONVERSION; CARBOXYLIC ACID SALTS; CHALCOGENIDES; DOCUMENT TYPES; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; MICROORGANISMS; ORGANIC COMPOUNDS; SULFIDES; SULFUR COMPOUNDS; 010408* - Coal, Lignite, & Peat- C1 Processes- (1987-); 100200 - Synthetic Fuels- Production- (1990-); 550700 - Microbiology
Citation Formats
. Biological production of ethanol from coal. United States: N. p., 1992.
Web. doi:10.2172/5128200.
. Biological production of ethanol from coal. United States. https://doi.org/10.2172/5128200
. 1992.
"Biological production of ethanol from coal". United States. https://doi.org/10.2172/5128200. https://www.osti.gov/servlets/purl/5128200.
@article{osti_5128200,
title = {Biological production of ethanol from coal},
author = {},
abstractNote = {Research is continuing in attempting to increase both the ethanol concentration and product ratio (acetate to ethanol) 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 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.},
doi = {10.2172/5128200},
url = {https://www.osti.gov/biblio/5128200},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri May 01 00:00:00 EDT 1992},
month = {Fri May 01 00:00:00 EDT 1992}
}