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Fermentation of natural gas with a cyclone column fermenter
Canadian Journal of Microbiology, 1969A mixed flora, capable of using natural gas as a carbon substrate, was derived from a laboratory sewage sludge. Fermentations in a cyclone column fermenter, on a 1:1 natural gas/air mixture, resulted in a doubling time of 4.6 h and production of 0.065 mg dry cell mass per square centimeter interfacial area per hour.
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Exploiting the potential of gas fermentation
Industrial Crops and Products, 2017The use of gas fermentation for production of chemicals and fuels with lower environmental impact is a technology that is gaining increasing attention. Over 38 Gt of CO2 is annually being emitted from industrial processes, thereby contributing significantly to the concentration of greenhouse gases in the atmosphere.
Redl, Stephanie +4 more
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Microbiology of synthesis gas fermentation for biofuel production
Current Opinion in Biotechnology, 2007A significant portion of biomass sources like straw and wood is poorly degradable and cannot be converted to biofuels by microorganisms. The gasification of this waste material to produce synthesis gas (or syngas) could offer a solution to this problem, as microorganisms that convert CO and H2) (the essential components of syngas) to multicarbon ...
Henstra, A.M. +3 more
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Reactor Design Issues for Synthesis‐Gas Fermentations
Biotechnology Progress, 1999AbstractSynthesis gas is readily obtained by gasifying coal, oil, biomass, or waste organics and represents an abundant, potentially inexpensive, feedstock for bioprocessing. The primary components of synthesis gas, carbon monoxide and hydrogen, can be converted into methane, organic acids, and alcohols via anaerobic fermentations.
, Bredwell, , Srivastava, , Worden
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Gas Fermentation Coupled with Water Remediation
Environmental Science & Technology LettersGasification is a promising method for extracting carbon from nearly all types of biowastes, producing gaseous products containing H2, CO, and CO2. This study demonstrates a novel combination of gas fermentation and water remediation. On the basis of a membrane biofilm reactor fed with a gaseous mixture of H2 and CO2, the effective removal of nitrate (>
Chenkai Niu +6 more
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Fermentation of biomass‐generated producer gas to ethanol
Biotechnology and Bioengineering, 2004AbstractThe development of low‐cost, sustainable, and renewable energy sources has been a major focus since the 1970s. Fuel‐grade ethanol is one energy source that has great potential for being generated from biomass. The demonstration of the fermentation of biomass‐generated producer gas to ethanol is the major focus of this article in addition to ...
Rohit P, Datar +4 more
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Human intestinal gas measurement systems: in vitro fermentation and gas capsules
Trends in Biotechnology, 2015The biological and clinical significance of the human gut microbiome is currently attracting worldwide attention. While rRNA and DNA technologies led to a quantum leap in our understanding of the numbers and types of gut microorganisms, much less is known about these microorganisms' activity in situ and in real time.
Jian Zhen, Ou +5 more
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1997
Abstract Almost any microbial process involves the consumption or evolution of gases, and vent-gas analysis therefore provides a convenient means to monitor microbial activity. In contrast to other monitoring techniques for which the culture medium must be placed in direct contact with a sampling device or probe, vent-gas analysis ...
Peter M Salmon, Barry C Buckland
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Abstract Almost any microbial process involves the consumption or evolution of gases, and vent-gas analysis therefore provides a convenient means to monitor microbial activity. In contrast to other monitoring techniques for which the culture medium must be placed in direct contact with a sampling device or probe, vent-gas analysis ...
Peter M Salmon, Barry C Buckland
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Bioreactor design for synthesis gas fermentations
Fuel, 1991Abstract Bacterial cultures have been isolated for the conversion of synthesis gas (CO, H2 and CO2) into ethanol or methane. These heterogeneous reactions require the transport of substrate through the gas phase, across the interface into the liquid phase, and to the solid micro-organisms. The reactions are generally mass transfer limited due to very
K.T. Klasson +3 more
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DETERMINATION OF OXYGEN UTILIZATION IN FERMENTATIONS BY GAS CHROMATOGRAPHY
Canadian Journal of Microbiology, 1962Dissolved oxygen in fermenting media is determined by withdrawing a sample using a hypodermic syringe containing a germicide. Gases are extracted from the sample under vacuum and analyzed by gas chromatography. Oxygen utilization is estimated by analysis of the exit gases using a similar analytical technique.
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