Biological production of ethanol from coal synthesis gas ...

1-9-1993· The anaerobic bacteriaClostridium ljungdahlii produces ethanol and acetate from CO, CO2, and H2 in synthesis gas. Early studies with the bacterium showed that relatively high concentrations of ethanol could be produced by lowering the fermentation pH and eliminating yeast extract from the medium in favor of a defined medium. This article presents the results from a medium development …

Biological production of ethanol from coal (Technical ...

@article{osti_6518366, title = {Biological production of ethanol from coal}, author = {}, abstractNote = {Due to the abundant supply of coal in the United States, significant research efforts have occurred over the past 15 years concerning the conversion of coal to liquid fuels. Researchers at the University of Arkansas have concentrated on a biological approach to coal liquefaction, starting ...

Biological production of ethanol from coal synthesis gas ...

@article{osti_6601074, title = {Biological production of ethanol from coal synthesis gas}, author = {Phillips, J R and Clausen, E C and Gaddy, J L and Klasson, K T}, abstractNote = {The anaerobic bacteria Clostridium ljungdahlii produces ethanol and acetate from CO, CO[sub 2], and H[sub 2] in synthesis gas. Early studies with the bacterium showed that relatively high concentrations of ethanol ...

biological production of ethanol from coal

Production of corn-ethanol is energy efficient, in that it yields 34 percent more energy than it takes to produce it, including growing the corn, harvesting it, transporting it, and distilling it into ethanol. Growth in ethanol production has provided an economic stimulus for U.S. agricul-ture, because most ethanol . Paper: Biological ...

Biological production of ethanol from coal. Final report ...

@article{osti_10153558, title = {Biological production of ethanol from coal. Final report}, author = {}, abstractNote = {Due to the abundant supply of coal in the United States, significant research efforts have occurred over the past 15 years concerning the conversion of coal to liquid fuels. Researchers at the University of Arkansas have concentrated on a biological approach to coal ...

Biological production of ethanol from coal. [Quarterly ...

Previously studies have shown the importance of both medium composition and concentration and medium pH on ethanol production of Clostridium ljungdahlii in fermenting CO, CO{sub 2} and H{sub 2} 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.

Biological production of ethanol from coal - UNT Digital ...

A batch kinetic study involving Clostridium lungdahlii in a mineral medium was carried out in order to provide baseline data for the effects of nutrients on product ratio and kinetics. The use of this minimal medium containing vitamins, minerals, select amino acids and salts showed both a lower maximum specific growth rate and a lower maximum specific uptake rate than found when using a ...

Biological production of ethanol from coal - Page 1 of …

A batch kinetic study involving Clostridium lungdahlii in a mineral medium was carried out in order to provide baseline data for the effects of nutrients on product ratio and kinetics. The use of this minimal medium containing vitamins, minerals, select amino acids and salts showed both a lower maximum specific growth rate and a lower maximum specific uptake rate than found when using a ...

Biological production of ethanol from coal - UNT Digital ...

The effects of temperature on the growth and uptake of CO by C. ljundahlii were studied in batch culture. Continuous stirred tank reactor (CSTR) studies were carried out measuring the effects of agitation rate on culture performance. Finally, cell recycle studies continued in conjunction with a CSTR.

Biological production of ethanol from coal. [Quarterly ...

Previously studies have shown the importance of both medium composition and concentration and medium pH on ethanol production of Clostridium ljungdahlii in fermenting CO, CO{sub 2} and H{sub 2} 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.

Biological production of ethanol from coal. (eBook, 1989 ...

Get this from a library! Biological production of ethanol from coal.. [University of Arkansas, Fayetteville.; United States. Department of Energy.; National Energy Technology Laboratory (U.S.); United States. Department of Energy. Office of Scientific and Technical Information.;] -- Two batch and one continuous reactor study involving Clostridium ljungdahlii were carried out.

Biological production of ethanol from coal. (eBook, 1990 ...

Get this from a library! Biological production of ethanol from coal.. [University of Arkansas, Fayetteville.; United States. Department of Energy.; National Energy Technology Laboratory (U.S.); United States. Department of Energy. Office of Scientific and Technical Information.;] -- The fermentation pH has been observed to be the key parameter affecting the ratio of ethanol to acetate produced ...

biological production of ethanol from coal

Biological production of ethanol from coal. Final report ... @article{osti_10153558, title = {Biological production of ethanol from coal. Final report}, author = {Not Available}, abstractNote = {Due to the abundant supply of coal in the United States, significant research efforts have occurred over the past 15 years concerning the conversion of coal to liquid fuels.

Biological production of alcohols from coal through ...

A bacterial culture has been isolated from animal waste that is capable of converting CO in synthesis gas to ethanol and acetate. The culture requires a yeast extract level of approximately.01 g/L, and the conversion is enhanced by agitation. The culture produces a higher yield of ethanol and ratio of ethanol to acetate when BESA and excess yeast extract are removed from the media.

ASMscience | Production of Ethanol fr

After the oil supply shocks in the 1970s, research on development of alternative sources of liquid fuels was intensified. The initial emphasis was on processes that used coal as a feedstock, but later investigations were on the direct fermentation of lignocellulosic biomass where the biomass is first treated to convert it to fermentable sugars, followed by the familiar alcoholic fermentation ...

Ethanol from coal - Wikipedia

Ethanol from coal is the ethanol produced using coal as its carbon source. The anaerobic bacterium Clostridium ljungdahlii produces ethanol and acetic acid from CO, CO 2, and H 2 in synthesis gas.Early studies with C. ljungdahlii showed that relatively high concentrations of ethanol were produced. This process involves three main steps: Gasification: Thermal gasification at temperatures of up ...

production coal ethanol - zwalocom.nl

biological production of ethanol from coal synthesis gas-. Abstract: The anaerobic bacteriaClostridium ljungdahlii produces ethanol and acetate fr. [5] R.M. Wordena, A.J. Grethleina, M.K. Jainb, R. Dattab Production Of Butanol And Eth.

Bench-scale demonstration of biological production of ...

The economics of converting coal to ethanol by a biological process is quite attractive. When processing 1500 tons of coal per day, the plant generates 85 million gallons of ethanol per year. The return on investment for the process is 110 percent and the payout is 0.9 years

ASMscience | Production of Ethanol fr

After the oil supply shocks in the 1970s, research on development of alternative sources of liquid fuels was intensified. The initial emphasis was on processes that used coal as a feedstock, but later investigations were on the direct fermentation of lignocellulosic biomass where the biomass is first treated to convert it to fermentable sugars, followed by the familiar alcoholic fermentation ...

The Biological production of ethanol from synthesis gas ...

There has been considerable interest recently in the production of liquid fuels from coal through direct or indirect liquefaction. A culture has been isolated from animal waste that is capable of producing ethanol and acetate from carbon monoxide and from hydrogen and carbon dioxide, the major components of synthesis gas. This paper presents results of batch and continuous laboratory studies ...

Biological conversion of synthesis gas into fuels ...

Liquid and gaseous fuels may be produced from coal biologically by the indirect conversion of coal synthesis gas. Methane has been produced from synthesis gas using acetate and CO 2 /H 2 as intermediates, utilising a number of CO-utilising and methanogenic bacteria. Also, a bacteria has been isolated from natural inocula that is capable of producing ethanol from synthesis gas through indirect ...

Problem Cataloger

Biological production of ethanol from coal : final report / prepared by University of Arkansas, Department of Chemical Engineering. (OCLC #1056492628)I just learned about (and used in an original record for the first time) the 536 MARC field: Funding Information Note.. The ǂa (not mandatory) can be used to record information about the funding agencies or sponsors, with any particular contract ...

US5854032A - Biological production of humic acid and …

Coal is treated aerobically or anaerobically to produce humic acid, volatile fatty acids, lower alcohols, and/or methane using a consortium of bacteria designated Mic-1 or KSARC56. This process can also be used to convert aromatic compounds, such as phenols and derivatives thereof, to …

Ethanol from Coal, Natural Gas, and Coke; not from Corn ...

A 40,000 ton industrial ethanol production unit is set to be built at Celanese’s Clear Lake, Texas facility. In this case, natural gas will be the feedstock. And, as a change of pace, this discovery is a reversal of the too often-repeated trend of China selling a good or service to America.

Biofuel - Wikipedia

A biofuel is a fuel that is produced through contemporary processes from biomass, rather than a fuel produced by the very slow geological processes involved in the formation of fossil fuels, such as oil.Since biomass technically can be used as a fuel directly (e.g. wood logs), some people use the terms biomass and biofuel interchangeably. . More often than not, however, the word biomass simply ...