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Bioconversion Of Coal Derived Synthesis Gas To Liquid Fuels Quarterly Technical Progress Report April 1 1993 June 30 1993
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Book Synopsis Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Quarterly Technical Progress Report, April 1, 1993--June 30, 1993 by :
Download or read book Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Quarterly Technical Progress Report, April 1, 1993--June 30, 1993 written by and published by . This book was released on 1993 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the project is to develop two stage fermentation process for conversion of coal-derived synthesis gas to a mixture of alcohols. This is achieved in two steps. In the first step, B .methylotrophicum converts carbon monoxide (CO) to butyric and acetic acids. Subsequent fermentation of the acids by Clostridium acetobutylicum leads to the production of butanol and ethanol. The tasks for this quarter were: Development/isolation of superior strains for fermentation of syn gas; optimization of process conditions for fermentation of syn gas; evaluation of bioreactor configuration for improved mass transfer of syn gas; and optimization of process conditions for reducing carbon and electron loss by H2-CO2 fermentation.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels. Final Quarterly Technical Progress Report, July 1, 1993--September 30, 1993 by :
Download or read book Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels. Final Quarterly Technical Progress Report, July 1, 1993--September 30, 1993 written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the project is to develop an integrated two stage fermentation process for conversion of coal-derived synthesis gas to a mixture of alcohols. This is achieved in two steps. In the first step, Butyribacterium methylotrophicum converts carbon monoxide (CO) to butyric and acetic acids. Subsequent fermentation of the acids by Clostridium acetobutylicum leads to the production of butanol and ethanol. The tasks for this quarter were: (1) development/isolation of superior strains for fermentation of syngas, (2) optimization of process conditions for fermentation of syngas, (3) evaluation of bioreactor configuration for improved mass transfer of syngas, (4) development of a membrane-based pervaporation system, (5) optimization of process conditions for reducing carbon and electron loss by H2-CO2 fermentation, and (6) synthesis gas fermentation in single-stage by co-culture. Progress is reported in isolation of CO utilizing anaerobic strains; investigating the product profile for the fermentation of syngas by B. methylotrophicum; and determining the effect of carbon monoxide on growth of C. acetobutylicum.
Book Synopsis Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels. Quarterly Technical Progress Report, 1 April--30 June 1994 by :
Download or read book Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels. Quarterly Technical Progress Report, 1 April--30 June 1994 written by and published by . This book was released on 1994 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the project is to develop an integrated two-stage fermentation process for conversion of coal-derived synthesis gas to a mixture of alcohols. This is achieved in two steps. In the first step, Butyribacterium methylotrophicum converts carbon monoxide (CO) to butyric and acetic acids. Subsequent fermentation of the acids by Clostridium acetobutylicum leads to the production of butanol and ethanol. The tasks for this quarter were: development/isolation of superior strains for fermentation of syngas; evaluation of bioreactor configuration for improved mass transfer of syngas; recovery of carbon and electrons from H2-CO2; initiation of pervaporation for recovery of solvents; and selection of solid support material for trickle-bed fermentation. Technical progress included the following. Butyrate production was enhanced during H2/CO2 (50/50) batch fermentation. Isolation of CO-utilizing anaerobic strains is in progress. Pressure (15 psig) fermentation was evaluated as a means of increasing CO availability. Polyurethane foam packing material was selected for trickle bed solid support. Cell recycle fermentation on syngas operated for 3 months. Acetate was the primary product at pH 6.8. Trickle bed and gas lift fermentor designs were modified after initial water testing. Pervaporation system was constructed. No alcohol selectivity was shown with the existing membranes during initial start-up.
Book Synopsis Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Annual Report, September 29, 1992--September 28, 1993 by :
Download or read book Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Annual Report, September 29, 1992--September 28, 1993 written by and published by . This book was released on 1993 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the project is to develop and optimize a two-stage fermentation process for the conversion of coal derived synthesis gas in an mixture of alcohols. The goals include the development of superior strains with high product tolerance and productivity, optimization of process conditions for high volumetric productivity and product concentrations, integration and optimization of two stage syngas fermentation, evaluation of bioreactor configurations for enhanced mass transfer, evaluation of syngas conversion by a culture of Butyribacterium methyltrophicum and Clostridium acetobutylicum, development of a membrane based pervaporation system for in situ removal of alcohols, and development of a process for reduction of carbon and electron loss. The specific goals for year one (September 1992 - September 1993) were (1) development of a project work plan, (2) development of superior CO-utilizing strains, (3) optimization of process conditions for conversion of synthesis gas to a mixture of acids in a continuously stirred reactor (CSTR), (4) evaluation of different bioreactor configurations for maximization of mass transfer of synthesis gas, (5) development of a membrane based pervaporation system, and (6) reduction of carbon and electron loss via H2CO2 fermentation. Experimentation and progress toward these goals are described in this report.
Book Synopsis Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels. Quarterly Technical Progress Report, January 1, 1994--March 31, 1994 by :
Download or read book Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels. Quarterly Technical Progress Report, January 1, 1994--March 31, 1994 written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of the project is to develop an integrated two-stage fermentation process for conversion of coal-derived synthesis gas to a mixture of alcohols. This is achieved in two steps. In the first steps, Butyribacterium methylotrophicum converts carbon monoxide (CO) to butyric and acetic acids. Subsequent fermentation of the acids by Clostridium acetobutylicum leads to the production of butanol and ethanol.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1995 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Final Technical Report, September 1, 1990--August 31, 1991 by :
Download or read book Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Final Technical Report, September 1, 1990--August 31, 1991 written by and published by . This book was released on 1991 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of coal-derived synthesis gas as an industrial feedstock for production of fuels and chemicals has become an increasingly attractive alternative to present petroleum-based chemicals production. However, one of the major limitations in developing such a process is the required removal of catalyst poisons such as hydrogen sulfide (H2S), carbonyl sulfide (COS), and other trace contaminants from the synthesis gas. Purification steps necessary to remove these are energy intensive and add significantly to the production cost, particularly for coals having a high sulfur content such as Illinois coal. A two-stage, anaerobic bioconversion process requiring little or no sulfur removal is proposed, where in the first stage the carbon monoxide (CO) gas is converted to butyric and acetic acids by the CO strain of Butyribacterium methylotrophicum. In the second stage, these acids along with the hydrogen (H2) gas are converted to butanol, ethanol, and acetone by an acid utilizing mutant of Clostridium acetobutylicum. 18 figs., 18 tabs.
Book Synopsis Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Final Report, September 29, 1992-December 27, 1994 by :
Download or read book Bioconversion of Coal-derived Synthesis Gas to Liquid Fuels. Final Report, September 29, 1992-December 27, 1994 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels by :
Download or read book Bioconversion of Coal Derived Synthesis Gas to Liquid Fuels written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Economical Production of Alcohol Fuels from Coal-derived Synthesis Gas. Seventh Quarterly Technical Progress Report, April 1, 1993--June 30, 1993 by :
Download or read book The Economical Production of Alcohol Fuels from Coal-derived Synthesis Gas. Seventh Quarterly Technical Progress Report, April 1, 1993--June 30, 1993 written by and published by . This book was released on 1993 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of the current base cases has been undertaken to determine if the economic status of the proposed alcohol fuels may benefit from economies of scale. This analysis was based on a literature review which suggested that plants of capacities substantially below 5000 metric tons/day are unlikely to be competitive for the bulk production of alcohols for fuel consumption or chemicals manufacture. The preliminary results of this scale up procedure would indicate that the capacity of the current base cases be increased by a factor of eight. This would yield annual production of 4.1 million metric tons and essentially reduce the plant gate cost by approximately 41 percent in both cases. A facility of this size would be the equivalent of a medium sized oil refinery and would be capable of sustaining local market demands for fuel oxygenates. The actual competitiveness of this product with current oxygenates such as MTBE remains to be determined. The alcohol synthesis loop is being used to evaluate optimization procedures which will eventually be used to optimize the entire process. A more detailed design of the synthesis reactor is required, and a preliminary design of this reactor has been completed.
Book Synopsis Large Scale Solubilization of Coal and Bioconversion to Utilizable Energy. Quarterly Technical Progress Report, September--December 1993 by :
Download or read book Large Scale Solubilization of Coal and Bioconversion to Utilizable Energy. Quarterly Technical Progress Report, September--December 1993 written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to develop a system for a large scale coal solubilization and its bioconversion to utilizable fuel, we plan to clone the genes encoding Neurospora protein that facilitate depolymerization of coal. We also plan to use desulfurizing bacteria to remove the sulfur in situ and use other microorganisms to convert biosolubilized coal into utilizable energy following an approach utilizing several microorganisms (Faison, 1991). In addition the product of coal solubilized by fungus will be characterized to determine their chemical nature and the mechanism of reaction catalyzed by fungal product during in vivo and in vitro solubilization by the fungus or purified fungal protein. The main objectives are: (1) Cloning of Neurospora gene for coal depolymerization protein controlling solubilization in different host cells, utilizing Neurospora plasmid and other vector(s); (2) (a) Development of a large scale electrophoretic separation of coal-drived products obtained after microbial solubilization; (b) Identification of the coal derived products obtained after biosolubilization by Neurospora cultures or obtained after Neurospora enzyme catalyzed reaction in in vitro by the wildtype and mutant enzymes; and (3) Bioconversion of coal-derived products into utilizable fuel.
Book Synopsis Large Scale Solubilization of Coal and Bioconversion to Utilizable Energy. Third Quarterly Technical Progress Report, April 1, 1994--June 30, 1994 by :
Download or read book Large Scale Solubilization of Coal and Bioconversion to Utilizable Energy. Third Quarterly Technical Progress Report, April 1, 1994--June 30, 1994 written by and published by . This book was released on 1994 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to develop a system for a large scale coal solubilization and its bioconversion to utilizable fuel, the investigators plan to clone the genes encoding Neurospora protein that facilitate depolymerization of coal. They also plan to use desulfurizing bacteria to remove the sulfur in situ and use other microorganisms to convert biosolubilized coal into utilizable energy following an approach utilizing several microorganisms. In addition the product of coal solubilized by fungus will be characterized to determine their chemical nature and the mechanism of reaction catalyzed by fungal product during in vivo and in vitro solubilization by the fungus or purified fungal protein. Main objectives are: (1) cloning of Neurospora gene for coal depolymerization protein controlling solubilization in different host cells, utilizing Neurospora plasmid and other vector(s); (2) (a) development of a large scale electrophoretic separation of coal drived products obtained after microbial solubilization; (b) identification of the coal derived products obtained after biosolubilization by Neurospora cultures or obtained after Neurospora enzyme catalyzed reaction in in vitro by the wildtype and mutant enzymes; (3) bioconversion of coal drived products into utilizable fuel; and (4) characterization of Neurospora wildtype and mutant CSA protein(s) involved in solubilization of coal in order to assess the nature of the mechanism of solubilization and the role of Neurospora proteins in this process.
Book Synopsis Large Scale Solubilization of Coal and Bioconversion to Utilizable Energy. Seventh Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 by :
Download or read book Large Scale Solubilization of Coal and Bioconversion to Utilizable Energy. Seventh Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Catalytic Coal Liquid Conversion: Quarterly Progress Report, June 30, 1993 by :
Download or read book Molecular Catalytic Coal Liquid Conversion: Quarterly Progress Report, June 30, 1993 written by and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Upgrading of Coal Liquids. Quarterly Report, July 1, 1993--September 30, 1993 by :
Download or read book Biological Upgrading of Coal Liquids. Quarterly Report, July 1, 1993--September 30, 1993 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The presence of heteroatom and aromatic compounds in liquids obtained from coal liquefaction processes requires expensive hydrogenation treatment to derive an acceptable liquid fuel. This project will develop a simple biological process for removing N, O and S and reducing the aromaticity of coal liquids. Microorganisms, employing biocatalysts, are known to degrade aromatic heteroatom compounds in nature to NH[sub 3], SO[sub 4][sup =] and CO[sub 2]. Preliminary experiments in the ERI laboratories to determine the feasibility of biological removal of N, O and S from coal and shale oil liquids have shown up to 20 percent nitrogen removal, 40 percent sulfur removal and 100 percent oxygen removal in a simple one stage incubation. A biological process for upgrading of coal liquids would offer significant advantages, such as operation at ordinary temperature and pressure with better energy efficiency. Of greater importance is the fact that microorganisms do not require an external supply of hydrogen for heteroatom removal, obtaining the required hydrogen from water. Furthermore, the biocatalysts are continuously regenerated by growth on the heteroatom compounds. Ring structures are degraded as the heteroatoms are removed. The heteroatoms are in an innocuous form, such as NH[sub 3], S0[sub 4][sup =], C0[sub 2] and H[sub 2]0. Therefore, there is significant potential for the development of an economical biological process for upgrading coal liquids. This project will screen known bacteria and develop isolates for N, O and S removal and aromaticity reduction. The performance of the best of these cultures will be optimized for complete heteroatom removal in a single step. Continuous reactor experiments will be conducted with the optimal cultures to determine reaction kinetics and reactor design. The design and economics of this process, including product recovery, will be projected to define economic feasibility and high cost areas.
