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The production of butanol by biological means was first performed by Louis Pasteur in 1861. [5] In 1905, Austrian biochemist Franz Schardinger found that acetone could similarly be produced. [5] In 1910 Auguste Fernbach (1860–1939) developed a bacterial fermentation process using potato starch as a feedstock in the production of butanol. [6]
Solventogenesis is the biochemical production of solvents (usually acetone and butanol) by Clostridium species. [1] It is the second phase of ABE fermentation. [2] This figure shows acidogenic and solventogenic phases of ABE fermentation by solventogenic Clostridium species.
The most common process starts with propene (propylene), which is put through a hydroformylation reaction to form butanal, which is then reduced with hydrogen to 1-butanol and/or 2-butanol. tert-butanol is derived from isobutane as a co-product of propylene oxide production. Butanol can also be produced by fermentation of biomass by bacteria.
In this process, a mixture of hydrogen, carbon monoxide, and carbon dioxide, known as syngas, is used as carbon and energy sources, and then converted into fuel and chemicals by microorganisms. [1] The main products of syngas fermentation include ethanol, butanol, acetic acid, butyric acid, and methane. [2]
n-Butanol can be produced by fermentation of biomass by the A.B.E. process using Clostridium acetobutylicum, Clostridium beijerinckii. C. acetobutylicum was once used for the production of acetone from starch. The butanol was a by-product of fermentation (twice as much butanol was produced).
The fermentation processes to produce propanol and butanol from cellulose are fairly tricky to execute, and the Weizmann organism (Clostridium acetobutylicum) currently used to perform these conversions produces an extremely unpleasant smell, and this must be taken into consideration when designing and locating a fermentation plant.
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Perstraction has been combined with the ABE (acetone butanol ethanol) fermentation for butanol production. [1] Butanol is toxic to the fermentation, therefore perstraction can be applied to remove the butanol from the vicinity of the bacteria as soon as it is produced. Liquid-liquid extraction (LLE) was combined with the ABE fermentation for in ...
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