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Production Of Ethanol From Coal Synthesis Gas Using Clostridium Ljungdahlii In A Trickle Bed Reactor
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Book Synopsis Production of Ethanol from Coal Synthesis Gas Using Clostridium Ljungdahlii in a Trickle Bed Reactor by : Rangarajan Raghavan
Download or read book Production of Ethanol from Coal Synthesis Gas Using Clostridium Ljungdahlii in a Trickle Bed Reactor written by Rangarajan Raghavan and published by . This book was released on 1993 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Production of Ethanol from Coal. Task 4 Report, Continuous Reactor Studies by :
Download or read book Biological Production of Ethanol from Coal. Task 4 Report, Continuous Reactor Studies written by and published by . This book was released on 1992 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of ethanol from synthesis gas by the anaerobic bacterium C. ljungdahlii has been demonstrated in continuous stirred tank reactors (CSTRs), CSTRs with cell recycle and trickle bed reactors. Various liquid media were utilized in these studies including basal medium, basal media with 1/2 B-vitamins and no yeast extract and a medium specifically designed for the growth of C. ljungdahlii in the CSTR. Ethanol production was successful in each of the three reactor types, although trickle bed operation with C. ljungdahlii was not as good as with the stirred tank reactors. Operation in the CSTR with cell recycle was particularly promising, producing 47 g/L ethanol with only minor concentrations of the by-product acetate.
Book Synopsis Biological Production of Ethanol from Coal Synthesis Gas Using Clostridium Ljungdahlii, Strain PETC by : Bill Baucum Elmore
Download or read book Biological Production of Ethanol from Coal Synthesis Gas Using Clostridium Ljungdahlii, Strain PETC written by Bill Baucum Elmore and published by . This book was released on 1990 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report, January 1, 1993--March 31, 1993 by :
Download or read book Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report, January 1, 1993--March 31, 1993 written by and published by . This book was released on 1993 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several batch experiments have been performed in developing the ethanol-producing isolates ER12 and ER18 for ethanol production from synthesis gas. In addition, Clostridium ljungdahlii, strain PETC, has been used in a two-stage continuous stirred tank reactor system. Ethanol concentrations from the CSTR system have reached 12 g/L.
Book Synopsis Production of Bioethanol from Synthesis Gas Using Clostridium Ljungdahlii as a Microbial Catalyst by : Oscar Tirado-Acevedo
Download or read book Production of Bioethanol from Synthesis Gas Using Clostridium Ljungdahlii as a Microbial Catalyst written by Oscar Tirado-Acevedo and published by . This book was released on 2010 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report by :
Download or read book Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report written by and published by . This book was released on 1993 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to present results from culture isolation and selection studies, bench-scale fermentation experiments, and ethanol recovery experiments. Several promising isolates have been obtained in addition to Clostridium ljungdahlii, strain PETC, and are being used in batch and continuous culture comparison studies. C. ljungdahlii is being utilized in two-stage bench-scale reactor studies, aimed at producing ethanol in high concentrations from a stable culture system. Finally, solvent comparison studies have been performed for the economical recovery of ethanol from the fermentation broth.
Book Synopsis Biological Production of Ethanol from Coal by :
Download or read book Biological Production of Ethanol from Coal written by and published by . This book was released on 1991 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previously studies have shown the importance of both medium composition and concentration and medium pH on ethanol production of Clostridium ljungdahlii in fermenting CO, CO2 and H2 in synthesis gas. Four additional batch experiments involving medium composition and concentration were carried out in modified basal medium without yeast extract at pH 4.0. These experiments indicate that basal medium with only small amounts of B-vitamins can yield significant cell growth while yielding ethanol as the major product. Product ratios as high as 11.0 g ethanol per g acetate were obtained with half strength B-vitamins. Further experiments indicates that Ca-pantothenate may be necessary for the growth of C. ljungdahlii and that growth and ethanol production can occur simultaneously.
Book Synopsis Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas by :
Download or read book Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Culture isolation and selection studies are being performed in order to select the best biological system for bench-scale studies in producing ethanol from syngas components. Three isolates have been found which produce more than 2 g/L ethanol from CO and C0[sub 2]/H[sub 2] in batch culture. These low concentrations are actually quite promising since Clostridium ljungdahlii, strain PETC, performs well in continuous culture but produces only small concentrations of ethanol in batch culture after several weeks of incubation. Two of the isolates have been utilized in the CSTR, where 90 percent CO conversions have been noted, while producing up to 2 g/L ethanol, in preliminary studies. CSTR studies will continue until steady state is reached. An anaerobic bacterium has been isolated from natural sources that converts the components of synthesis gas (CO, H[sub 2], C0[sub 2]) into ethanol. This organism, the only one known at that time to produce ethanol from synthesis gas, has been identified as a new clostridial strain and has been named Clostridium ljungdahlii, strain PETC.
Book Synopsis Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report, April 1, 1993--June 30, 1993 by :
Download or read book Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report, April 1, 1993--June 30, 1993 written by and published by . This book was released on 1993 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three bacteria, Clostridium ljungdahlii and isolates ERI-8 and 0-52, have been utilized in CSTR studies in order to directly compare the performance of the bacteria in continuous culture in converting synthesis gas components to ethanol. C. ljungdahlii is able to produce higher concentrations of ethanol than the other bacteria, largely because medium development with this bacterium has been ongoing for 2--3 years. However, both of the ERI isolates are quite promising for ethanol production and, therefore, will be studied further in the CSTR. A comparison of the energy costs for various ethanol recovery techniques has been made for use in the bench scale system. The techniques considered include direct distillation, extraction with various solvents followed by distillation, air stripping followed by distillation, pervaporation followed by distillation, reverse osmosis and temperature swing extraction. Extraction with a solvent possessing a relatively high distribution coefficient for ethanol and a high separation factor (relative ability to extract ethanol in favor of water), followed by distillation, is the most desirable technology.
Book Synopsis Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report, September 24, 1992--December 31, 1992 by :
Download or read book Bench-scale Demonstration of Biological Production of Ethanol from Coal Synthesis Gas. Quarterly Report, September 24, 1992--December 31, 1992 written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Culture isolation and selection studies are being performed in order to select the best biological system for bench-scale studies in producing ethanol from syngas components. Three isolates have been found which produce more than 2 g/L ethanol from CO and C02/H2 in batch culture. These low concentrations are actually quite promising since Clostridium ljungdahlii, strain PETC, performs well in continuous culture but produces only small concentrations of ethanol in batch culture after several weeks of incubation. Two of the isolates have been utilized in the CSTR, where 90 percent CO conversions have been noted, while producing up to 2 g/L ethanol, in preliminary studies. CSTR studies will continue until steady state is reached. An anaerobic bacterium has been isolated from natural sources that converts the components of synthesis gas (CO, H2, C02) into ethanol. This organism, the only one known at that time to produce ethanol from synthesis gas, has been identified as a new clostridial strain and has been named Clostridium ljungdahlii, strain PETC.
Book Synopsis Biological Production of Ethanol from Coal. [Quarterly Report], December 22, 1990--March 21, 1991 by :
Download or read book Biological Production of Ethanol from Coal. [Quarterly Report], December 22, 1990--March 21, 1991 written by and published by . This book was released on 1991 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previously studies have shown the importance of both medium composition and concentration and medium pH on ethanol production of Clostridium ljungdahlii in fermenting CO, CO2 and H2 in synthesis gas. Four additional batch experiments involving medium composition and concentration were carried out in modified basal medium without yeast extract at pH 4.0. These experiments indicate that basal medium with only small amounts of B-vitamins can yield significant cell growth while yielding ethanol as the major product. Product ratios as high as 11.0 g ethanol per g acetate were obtained with half strength B-vitamins. Further experiments indicates that Ca-pantothenate may be necessary for the growth of C. ljungdahlii and that growth and ethanol production can occur simultaneously.
Book Synopsis Production of Ethanol from the Fermentation of Synthesis Gas by : Christine Evon Morrison
Download or read book Production of Ethanol from the Fermentation of Synthesis Gas written by Christine Evon Morrison and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ethanol produced from lignocellulosic agricultural products and waste is an environmentally-friendly alternative to petroleum-derived fuel. Lignocellulosic biomass is gasified producing synthesis gas, which is composed of CO, CO2, and H2. Synthesis gas is fermented via anaerobic biocatalyst. The bacterium was grown in a fructose-rich medium then concentrated in ethanol production medium for synthesis gas fermentation. While the known ethanol-producing bacterium Clostridium ljungdahlii was used to provide baseline values for synthesis gas utilization and ethanol production, synthesis gas fermentation were conduced with a culture discovered at Mississippi State University. Additionally, efforts were made to isolate other anaerobic cultures capable of fermenting synthesis gas to ethanol.
Book Synopsis Biological Production of Ethanol from Coal. [Quarterly Report], September 22, 1990--December 21, 1990 by :
Download or read book Biological Production of Ethanol from Coal. [Quarterly Report], September 22, 1990--December 21, 1990 written by and published by . This book was released on 1990 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous results have shown that the medium pH, the composition of the medium and concentration of medium constituents significantly affect the ratio of ethanol to acetate in the product stream when fermenting CO, CO2 and H2 in synthesis gas to products by Clostridium ljungdahlii. An additional batch study was carried out varying the agitation rate at pH 4, 4.5 and 5.0. It was speculated that increased agitation rates in combination with low pH might result in increased ethanol production while, at the same time, yielding higher cell concentrations which could eventually result in higher ethanol concentrations.
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 38 (thesis year 1993) a total of 13,787 thesis titles from 22 Canadian and 164 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 38 reports theses submitted in 1993, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Book Synopsis Biological Production of Ethanol from Coal. [Quarterly Report], June 22, 1990--September 21, 1990 by :
Download or read book Biological Production of Ethanol from Coal. [Quarterly Report], June 22, 1990--September 21, 1990 written by and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous results have shown that the yeast extract concentration and the medium pH significantly affect the ratio of ethanol to acetate in the product stream when fermenting CO, CO2 and H2 in synthesis gas to products by Clostridium ljungdahlii. Further experimentation has demonstrated the impact of eliminating yeast extract from the medium (except for the slight quantity transferred with the inoculm), especially when coupled with low pH. An ethanol to acetate product ratio of 4.0 was obtained at pH 4.5 without yeast extract present in the medium when using culture previously exposed to growth-limiting H2S. The product ratio was 2.0 at pH 4.0 (nearly three times the value of pH 4.5 and nine times the value of pH 5.0) without yeast extract present in the media when using the standard (unexposed) culture.
Book Synopsis Biofuels and Biochemicals Production by : Thaddeus Ezeji
Download or read book Biofuels and Biochemicals Production written by Thaddeus Ezeji and published by MDPI. This book was released on 2018-04-13 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Biofuels and Biochemicals Production" that was published in Fermentation
Book Synopsis Identifying Genetic Targets and Growth Conditions for Higher Ethanol Production by the Synthesis Gas Fermenting Bacterium Clostridium Ljungdahlii by : Jason Michael Whitham
Download or read book Identifying Genetic Targets and Growth Conditions for Higher Ethanol Production by the Synthesis Gas Fermenting Bacterium Clostridium Ljungdahlii written by Jason Michael Whitham and published by . This book was released on 2015 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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