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 14 of 14 for “"cellulosic ethanol production"”.
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Engineering Saccharomyces cerevisiae for cellulosic ethanol production
There 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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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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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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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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Bio-energy system analysis: Profit, planet, and policy
… to an economy that utilizes biomass for the production of goods, services, and energy. Using biomass leverages the biogenic carbon cycle of biomass, which can lower total greenhouse gas emissions. However, this transition is complex and hindered by the combination of technical, economic, and …
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Biofuels supply chain characterization
Ethanol can be made from agricultural residues like wheat straw and from crops dedicated to energy use, like switchgrass. We study the logistics aspects of this transformation and determine the main characteristics of the supply chain making ethanol from cellulose. Important to the final …
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Marker development and genetic diversity in saccharum and miscanthus
… in recent years. From 2000 to 2010, worldwide ethanol fuel production has increased from 4.49 billion gallons to 19.5 billion gallons. A large source of this ethanol comes from sugarcane produced in Brazil. Brazil is the second largest producer of ethanol fuel, accounting for 37.7% of the total …
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Energy production, distribution, and pollution controls: Combining engineering and economic analysis to enhance efficiency and policy design
… assessment of product enhancements within an ethanol production facility. While a new chemical process is shown to achieve greater ethanol yields, the animal feed by-products are denatured and decrease in value due to the degradation of a key nutritional amino acid. Overall, yield increases …
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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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Economies of scale analysis and location studies for fuel ethanol refineries
The development of commercial-scale cellulosic ethanol refineries is a challenging task, but it is a promising way to increase national energy independence and security. The main barrier to this development is high production costs. Biomass feedstock costs account for more than 30% of the total …
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Performance of a multiple stage hot water pretreatment on sugarcane bagasse and its economic analysis
Cellulosic ethanol production has and continues to be widely investigated for commercial operation using corn stover and sugarcane bagasse. The lack of an effective and scalable pretreatment operation remains a major technical obstacle to wide spread commercialization. Combining multiple mild …
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Engineering Zymomonas mobilis for the production of biofuels and other value-added products
… mobilis is a promising organism for lignocellulosic biofuel production as it can efficiently produce ethanol from simple sugars using unique metabolic pathways. Z. mobilis displays what is known as the “uncoupled growth” phenomenon, meaning cells will rapidly convert sugars to ethanol …
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Cell surface display in biomedical applications and biofuels production
… challenges in biomedical research and biofuels production. Identification of T cell epitopes is a critical, but often difficult step in developing peptidebased vaccines and T cell immunotherapies. Unlike antibody that recognizes free soluble antigens, T cell receptor (TCR) recognizes its epitope …
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Technical and economic viability of value added product recovery in the corn dry grind ethanol process
Although ethanol is the primary product of the corn dry grind ethanol process, other coproducts in the dry grind process also contribute to sustainability. However, low coproduct value is responsible for high dependence of plant profitability on ethanol revenue. Improving coproduct value and …