Over het verdwijnen van waterstof en koolzuur onder anaerobe voorwaarden

Wieringa, K. T.

doi:10.1007/bf02059556

Cited by 108 publications

(41 citation statements)

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“…Inocula were derived from a culture that had been transferred three times in medium with N 2 as the sole source of nitrogen. (Wieringa, 1936). Although the occurrence of carbon monoxide dehydrogenase in the nonacetogen C. pasteurianum is paradoxical (Diekert et al, 1978 ;Drake, 1982b), it has recently been reported that Clostridium scatologenes, previously not known to be an acetogen, contains carbon monoxide dehydrogenase and is capable of acetogenic growth on H # \CO # and CO\CO # (Ku$ sel et al, 2000), suggesting that certain organisms previously not identified as acetogens might nonetheless be capable of engaging the acetyl-CoA pathway and growing acetogenically.…”

Section: Discussionmentioning

confidence: 99%

Clostridium akagii sp. nov. and Clostridium acidisoli sp. nov.: acid-tolerant, N2-fixing clostridia isolated from acidic forest soil and litter.

Kuhner¹,

Matthies²,

Acker³

et al. 2000

International Journal of Systematic and Evolutionary Microbiology

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Section: Discussionmentioning

confidence: 99%

Clostridium akagii sp. nov. and Clostridium acidisoli sp. nov.: acid-tolerant, N2-fixing clostridia isolated from acidic forest soil and litter.

Kuhner¹,

Matthies²,

Acker³

et al. 2000

International Journal of Systematic and Evolutionary Microbiology

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“…aceticum was the first acetogen to be isolated, from a soil sample in 1936 [134,135], although the strain was subsequently lost [136]. In 1980, spores of the original strain were serendipitously found and reactivated [136], while at the same time it was separately re-isolated [137].…”

Section: Acetate Producersmentioning

confidence: 99%

Commercial Biomass Syngas Fermentation

2012

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Abstract:The use of gas fermentation for the production of low carbon biofuels such as ethanol or butanol from lignocellulosic biomass is an area currently undergoing intensive research and development, with the first commercial units expected to commence operation in the near future. In this process, biomass is first converted into carbon monoxide (CO) and hydrogen (H 2 )-rich synthesis gas (syngas) via gasification, and subsequently fermented to hydrocarbons by acetogenic bacteria. Several studies have been performed over the last few years to optimise both biomass gasification and syngas fermentation with significant progress being reported in both areas. While challenges associated with the scale-up and operation of this novel process remain, this strategy offers numerous advantages compared with established fermentation and purely thermochemical approaches to biofuel production in terms of feedstock flexibility and production cost. In recent times, metabolic engineering and synthetic biology techniques have been applied to gas fermenting organisms, paving the way for gases to be used as the feedstock for the commercial production of increasingly energy dense fuels and more valuable chemicals.

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“…Subsequently, Klass Wieringa [21] isolated Clostridium aceticum, demonstrating synthesis of acetic acid from H 2 /CO 2 by this pure culture. The type culture for acetogenesis, Clostridium thermoaceticum, reclassified as Moorella thermoacetica [22], was isolated by Francis Fontaine [23].…”

Section: Chemoautotrophic Microbesmentioning

confidence: 99%

“…The term k L,CO is the liquid film mass transfer coefficient for CO (L/m 2 h), which includes the effects of turbulence in the liquid, hydrodynamic conditions like viscosity that affect film thickness and gas diffusivity in the aqueous phase. When CO is mass transfer limited, p CO * is arithmetically zero, and k L,CO a/V L can be calculated from dn CO /dt and p CO using Equation (21). The volumetric mass transfer coefficients for H 2 (k L,H2 a/V L ) and CO 2 (k L,CO2 a/V L ) differ from k L,CO a/V L , but are proportional.…”

Section: Transport Theorymentioning

confidence: 99%

Syngas Fermentation: A Microbial Conversion Process of Gaseous Substrates to Various Products

2017

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Biomass and other carbonaceous materials can be gasified to produce syngas with high concentrations of CO and H 2 . Feedstock materials include wood, dedicated energy crops, grain wastes, manufacturing or municipal wastes, natural gas, petroleum and chemical wastes, lignin, coal and tires. Syngas fermentation converts CO and H 2 to alcohols and organic acids and uses concepts applicable in fermentation of gas phase substrates. The growth of chemoautotrophic microbes produces a wide range of chemicals from the enzyme platform of native organisms. In this review paper, the Wood-Ljungdahl biochemical pathway used by chemoautotrophs is described including balanced reactions, reaction sites physically located within the cell and cell mechanisms for energy conservation that govern production. Important concepts discussed include gas solubility, mass transfer, thermodynamics of enzyme-catalyzed reactions, electrochemistry and cellular electron carriers and fermentation kinetics. Potential applications of these concepts include acid and alcohol production, hydrogen generation and conversion of methane to liquids or hydrogen.

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Over het verdwijnen van waterstof en koolzuur onder anaerobe voorwaarden

Cited by 108 publications

References 0 publications

Clostridium akagii sp. nov. and Clostridium acidisoli sp. nov.: acid-tolerant, N2-fixing clostridia isolated from acidic forest soil and litter.

Clostridium akagii sp. nov. and Clostridium acidisoli sp. nov.: acid-tolerant, N2-fixing clostridia isolated from acidic forest soil and litter.

Commercial Biomass Syngas Fermentation

Syngas Fermentation: A Microbial Conversion Process of Gaseous Substrates to Various Products

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