Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 143 for “"ethanol production"”.
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Ethanol Production from Timothy (Phleum pratense L.)
… Clostridium thermocellum, Thermoanaerobacter ethanolicus, Thermoanaerobacter stofn J1, Zymomonas mobilis, Kluyveromyces marxianus og Saccharomyces cerevisiae. Vallarfoxgrasið var slegið sumarið 2014 á Möðruvöllum í Hörgárdal. Borin voru saman fjögur þroskastig vallarfoxgrassins: blaðvöxtur …
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Engineering Saccharomyces cerevisiae for cellulosic ethanol production
… are two long-existing obstacles for cellulosic ethanol production in Saccharomyces cerevisiae. The first one is inefficient xylose utilization and the second one is sequential fermentation of glucose and xylose in engineered Saccharomyces cerevisiae. This study mainly focused on solving these …
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Granular Starch Hydrolysis for Fuel Ethanol Production
… pilot plant. Soft endosperm resulted in higher ethanol concentrations (at 72 hr) compared to ground corn or hard endosperm. Addition of urea increased ethanol concentrations (at 72 hr) for soft and hard endosperm. The effect of protease addition on increasing ethanol concentrations and …
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Studies of Cellulosic Ethanol Production from Lignocellulose
… use of fossil fuels. Utilizing non-petroleum ethanol in the transportation sector reduces the dependence on oil, and allows for cleaner burning of gasoline. Lignocellulose materials are structurally composed of five types of polymeric sugars, glucan, galactan, mannan, arabinan, and xylan. NREL …
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Process development for ethanol production from food waste
The global demand for ethanol is expected to rapidly expand due to its potential for decarbonising the transport, chemicals, and materials sectors. Starch-rich food waste (FW) has the potential to substantially contribute to the sector. However, current bottlenecks in the implementation of ethanol …
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Improving Brassica napus straw for cellulosic ethanol production
… necessarily produce higher saccharification or ethanol yields. Instead, variations in the non-cellulosic components were the most important differences between cultivars. Smaller scale methods were developed and rational conditions selected for screening In total, seventy-seven straw accessions …
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Engineering industrial yeast strains for lignocellulosic ethanol production
This Dissertation was approved for publication on 2016-12-01 at 15:08.
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Pretreatment and hydrolysis of recovered fibre for ethanol production
… caused by diminishing petroleum resources is bioethanol. Effective exploitation of biomass materials requires a pretreatment to disrupt the lignin and cellulose matrix. The pretreatment utilized for this research was oxygen delignification, which is a standard process stage in the production of …
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Use of treated effluent water in cellulosic ethanol production
The bioethanol industry exerts a significant demand on water supplies. Current water consumption rate in corn dry grind ethanol plants is 3 to 4 gallons of water per gallon of ethanol produced (gal/gal) and 6 to 10 gal/gal for cellulosic ethanol plants. The main goal of this study was to examine …
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Protease Use In Ethanol Production From Dry Fractionated Corn
… endosperm from germ and pericarp improves corn ethanol processing by increasing fermentation throughput and generating salable coproducts. One such technology, dry fractionation, suffers from loss of germ derived nutrients and amino acids, resulting in poor fermentation kinetics. In the fuel …
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Ethanol production from sugarcane in India: Viability, constraints and implications
… Government of India in October of 2007 set a 20% ethanol blend target for gasoline fuel to be met by 2017. In India, the vast majority of ethanol is produced from sugarcane molasses, a by-product of sugar. In the future it may also be produced directly from sugarcane juice. The main objective of …
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Treatment of air pollutants emitted from corn-derived ethanol production facilities
Ethanol is widely seen as an environmentally friendly gasoline oxygenate that is renewable and sustainable. As a result, the total annual capacity of ethanol production facilities in the United States is rising rapidly. However, ethanol has environmental issues that may limit its use as a gasoline …
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Effects of corn quality and storage on dry grind ethanol production
… dry grind industry is the major contributor of ethanol production in the US. Ethanol plants incur economic losses due to seasonal variations in ethanol yields. Ethanol yields typically are low during the first month after harvest, increase for the next six to seven months and decrease again …
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Engineering Zymomonas mobilis for efficient fuel ethanol production from lignocellulosic feedstocks
… mobilis is of interest for the commercial production of fuel ethanol from lignocellulosic feedstocks due to its high ethanol productivity. Z. mobilis has been engineered to ferment all of the sugars present in cellulosic biomass, but the digestion of five carbon sugars by the strain is …
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Steam Explosion Pretreatment of Cotton Gin Waste for Fuel Ethanol Production
… to produce a value-added product - fuel ethanol. Cotton gin waste consists of pieces of burs, stems, motes (immature seeds) and cotton fiber, and is considered to be a lignocellulosic material. The three main chemical constituents are cellulose, hemicellulose, and lignin. Cellulose and …
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Metabolic engineering of Saccharomyces cerevisiae for efficient ethanol production from pentose sugars
… one of the most promising organisms for ethanol production from lignocellulosic feedstock. Unfortunately, pentose sugars, which constitute up to 30% of biomass hydrolysate, cannot be utilized by S. cerevisiae. To this end, heterologous pentose utilization pathways have been introduced …
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Impact of Amphiphiles in Cellulase Stabilization, Recycling and Ethanol Production from Pretreated Biomass
<p>The current raw materials for the production of bioethanol are starch-based materials as well as sugar cane and molasses. However lignocellulosic biomass (e.g. agricultural residues and herbaceous grasses) hold a great potential to be used as carbohydrtae source for fermentation to ethanol. …
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