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 429 for “"biofuel"”.
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Experimental investigation of a biofuel cell
This thesis presents an investigation of bioenergy generation through a soil-based microbial fuel cell (MFC). The MFC utilized soil samples of 100 g and various environmental and operational conditions to assess the generation of voltage. The parameters of interest included temperature, pH, glucose …
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Perspectives on third generation gaseous biofuel
Advanced biofuels that have high productivity such as micro and macro algae or certain plant based waste biomass are considered as third generation biofuel. Hydrogen produced using surplus electricity can be then transformed to methane by biological or catalytic methanation is also considered as a …
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Multiobjective modelling of biofuel supply systems
… most efficient and sustainable agriculture-based biofuels industry.
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Biofuel supply chain challenges and analysis
… challenges and issues that exist for bringing biofuel production up to scale. One major challenge that exists is how to transport the feedstock from a farm to a refinery in the most cost efficient manner. One way to improve transportation efficiency of feedstock is to increase the energy …
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Biofuel supply chain restructuring -- An economic viability and environmental sustainability investigation for enhancing second generation biofuel adoption
<p>"Biofuel is a promising clean alternative to fossil fuels. Currently, first generation biofuels are commercially produced by using corn grain as biomass feedstock. However, the use of edible matter of crops, may lead to a competition between food and fuel. Therefore, there is a significant push …
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Biofuel Cell Anode for NAD-Dependent Enzymes
Enzymatic biofuel cells are a very attractive young technology based on utilization of natural, renewable and plentiful resources that offer an alternative energy source. Most fuel cells run on hydrogen; but it is extremely expensive and difficult to obtain, which is why research has moved to …
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Pathway optimization and engineering for biofuel production
… for effective and economical production of biofuels and specialty chemicals. One such significant pathway is the cellobiose utilization pathway, identified as a promising route for efficient biomass utilization. Here we describe the simultaneous optimization of the β-glucosidase (gh1-1) and …
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Barriers Impacting United States Advanced Biofuel Projects
… EPAct was enacted to help bolster the emerging biofuel industry, 52% of advanced biofuel projects were closed or shut down by 2015. However, there are no complete lists of barriers that impeded these projects. The goal of this study was to develop a framework of barriers impeding success of …
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Early avian colonization in a prairie biofuel project
1 PDF file (ix, 82 pages)
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Three essays on biofuel, weather and corn yield
… dissertation is to study the competition of biofuels to meet the U.S. renewable fuels standards (RFS) and its impact on biofuel and corn prices, and the impacts of weather and soil moisture on corn yield in the Midwest. Chapter 2 illustrates the hierarchical competition of U.S. corn ethanol, …
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Green grass: developing grass for sustainable gaseous biofuel
Grass is ubiquitous in Ireland and temperate northern Europe. It is a low input perennial crop; farmers are well versed in its production and storage (ensiling). Anaerobic digestion is a well understood technology. Grass is a lignocellulosic feedstock which is fibrous; it can readily cause …
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Algae and cyanobacteria platforms for engineering biofuel production
… to provide the feedstock for sustainable liquid biofuel production. In particular, genetic manipulations in conjunction with nutritional triggers were used to redirect carbon into lipid biosynthesis. Wild-type and starch mutants of Chlamydomonas reinhardtii, a well-established model green alga, …
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Algae and cyanobacteria platforms for engineering biofuel production
… to provide the feedstock for sustainable liquid biofuel production. In particular, genetic manipulations in conjunction with nutritional triggers were used to redirect carbon into lipid biosynthesis. Wild-type and starch mutants of Chlamydomonas reinhardtii, a well-established model green alga, …
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Characterization of biofuel from diatoms via hydrothermal liquefaction
Previous studies of hydrothermal liquefaction (HTL) converting low lipid content microalgae (i.e., Chlorella pyrenoidosa and Spirulina platensis) have shown potential to utilize low lipid microalgae to produce bio-crude oil. Diatoms are a major group of microalgae in water bodies with a high growth …
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Certification for biofuel: a means to sustainable development?
… have adopted policies to promote greater use of biofuel, with the hope that biofuel can be used to meet the sustainability goal of reducing carbon emission associated with conventional fossil fuel. However, biofuel production, if not implemented with care, can bring about lots of environmental …
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The impact of biofuel mandates on land use
The use of biofuels in domestic transportation sector in the United States and European Union is attributed mainly to the binding mandates, Renewable Fuel Standard in the US and European Directive on the Promotion of Renewable Energy in the EU. The mandates have triggered production of first …
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Quantitative policy analysis for aviation biofuel production technologies
… on the economic viability of six aviation biofuel production technologies. The pathways considered are isobutanol to jet from corn grain, hydroprocessed esters and fatty acids (HEFA) from inedible fats and oils (IFO), HEFA from palm fatty acid distillate (PFAD), synthesized iso-paraffins …
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