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Showing 1 to 17 of 17 for “"Acetone-Butanol-Ethanol"”.
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Spray and combustion characteristics of acetone-butanol-ethanol and diesel in a constant volume chamber and a diesel engine
Recent research has shown that butanol, instead of ethanol, has the potential of introducing a more suitable blend in diesel engines. This is because butanol has properties similar to current transportation fuels in comparison to ethanol. However, the main downside is the high cost of the butanol …
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Physiological Changes Occurring in the Cellular Membranes of Clostridium Acetobutylicum ATCC 824 and a Butanol-Tolerant Mutant During the Acetone-Butanol-Ethanol Fermentation
The acetone-butanol-ethanol fermentation by Clostridium acetobutylicum is not able to compete economically with the petroleum methods, due to the premature termination of this fermentation from the butanol produced by the cell. It is known that alcohols disrupt the membrane structure and function, …
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Investigation of carbon catabolite repression in Clostridium beijerinckii NCIMB 8052
The substrate basis for the industrial acetone-butanol-ethanol (ABE) fermentations, has been agricultural products rich in starch or sucrose, and employed taxonomically distinct amylolytic and saccharolytic solventogenic clostridial strains respectively. There is evidence to suggest that the …
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Nitrogen metabolism and butanol production by South African clostridium beijerinckii and clostridium saccharobutylicum strains
The acetone- butanol-ethanol (ABE) fermentation was one of the first fermentation processes to be industrialized on a large scale, and the dominant product, butanol is particularly significant due to its potential as a modern day fuel additive or fuel extender in the petrochemical industry. A …
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Characterization of spray and combustion of diesel-alcohol blends in a constant volume chamber
… study, the spray combustion characteristics of Acetone-Butanol-Ethanol (ABE)/ Diesel blends was investigated. An optical-accessible constant volume chamber capable of controlling ambient temperature, pressure and oxygen concentration was used to mimic the environmental conditions inside a real …
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Improvement of Biofuel Fermentation Processes With Use of Poly(vinyldodecylimidazolium bromide) for In-situ Product Removal
… energy sources. The fermentation processes of ethanol and n-butanol, by Saccharomyces cerevisiae and Clostridium acetobutylicum, respectively, suffer from end-product inhibition, hindering final product concentrations, volumetric productivity, and product recovery. To alleviate these …
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Molecular characterization of three linked genes, fixB, βshbd and adh1 from Clostridium acetobutylicum P262
… it has been used in the industrial production of acetone and butanol for many years. The aim of this study was to characterize the upstream region of the βhbd gene which is linked to the adh1 gene, and to investigate the expression of these linked genes by transcriptional analysis. The upstream …
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Production of 1-butanol and butanol isomers by metabolically engineered Clostridium beijerinckii and Saccharomyces cerevisiae
… is to produce four-carbon alcohols such as 1-butanol and 2,3-butanediol, and isobutanol as advanced biofuels and chemicals from microorganisms through metabolic engineering, systems biology, and synthetic biology approaches. Biobutanol is an attractive renewable biofuel and intermediate …
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Production of Biobutanol from inulin-rich biomass and industrial food processing wastes
… alternatives for gasoline. In recent years, biobutanol has gained enormous attention as a potential gasoline substitute due to its high energy density, low vapor pressure, low heat of vaporization and high hydrophobicity. These physical and chemical properties make butanol suitable for blending …
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Investigation of combustion enhancement with biomass derived fuels blended with diesel
… CO2 from the atmosphere. As there is now bio-ethanol in gasoline, the analogous additive to diesel would be bio-butanol, another alcohol. The intermediate product in the bio-butanol production process is a mixture of acetone-butanol-ethanol (ABE). Due to the fact that engines do not require …
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Separation of various organic-organic and aqueous-organic solutions via pervaporation
… mixtures. An earlier study based on water-ethanol-isopropanol has shown evidence that the membrane selectivity may be based on size exclusion. Thus, solvents with larger molecular dimensions may not able to penetrate the membrane and remain in the feed; the permeate is enriched in the …
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Combustion quality and regimes for standard and alternative fuels
… of the modern ICE. Alcohols, especially n-butanol, have been studied as potential fuels and have shown to be a possible alternative to pure gasoline. In this work, the intermediate product in bio-butanol production through acetone-butanol-ethanol (ABE) fermentation, ABE, was studied for the …
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Integrated modeling of bacterial metabolism
… I present an integrated modeling framework for acetone-butanol-ethanol (ABE) fermentation by Clostridium acetobutylicum. ABE fermentation is a biphasic metabolic process during which cells convert carbon sources to organic acids that are later re-assimilated to produce solvents as a strategy for …
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Integrated Process Design and Techno-Economic Analysis of A Grape Pomace Biorefinery
… by hexane to produce oil, followed by aqueous ethanol solution extraction to obtain polyphenols. The solid residue rich in structural carbohydrates was then pretreated by alkali to partially remove lignin and enzymatically hydrolyzed to produce monomer sugars. The produced sugars were used as …
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Activated Carbon Preparation and Modification for Adsorption
<p>Butanol is considered a promising, infrastructure-compatible biofuel. Butanol has a higher energy content than ethanol and can be used in conventional gas engines without modifications. Unfortunately, the fermentation pathway for butanol production is restricted by its toxicity to the microbial …