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 48 for “"Energy crops"”.
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Productivity and ecosystem services from purpose-grown energy crops
Purpose-grown energy crops are hypothesized to make significant contributions toward achieving the bioenergy and climate goals of the U.S. There is significant uncertainty regarding the biomass yield, environmental and climate outcomes associated with scaling up production of perennial bioenergy …
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Perennial energy crops on riparian buffers affect nitrogen cycling microbial communities
Production of perennial bioenergy crops on farmland that is suboptimal for food crops has been suggested for ecosystem services such as mitigating greenhouse gas emissions and reducing nutrient loss while producing sustainable bioenergy feedstocks. Even though we understand the relationship between …
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Energy requirements and productivity of machinery used to harvest herbaceous energy crops
Herbaceous energy crops (miscanthus, switchgrass, and tallgrass prairie) are promising biomass feedstocks, but are difficult to harvest with traditional machinery. Energy required for harvesting novel herbaceous crops was evaluated in both field and laboratory settings. Previous work on harvesting …
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Ecosustainable biomethane and fertilizerproduction through anaerobic co-digestionof animal manure and energy crops
In Italy and many European countries energy production from biomass is encouraged by strong economic subsidies so that renewable energy plants, anaerobic digestion plant producing biogas in particular, are getting large diffusion. Nevertheless, it is necessary to define the environmental …
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Economic and socio-economic evaluation of bioenergy schemes fueled with energy crops in Greece
… the economic and socio-economic viability of energy crops as raw material for bioenergy schemes at the local level. The case examined is Greece, a southern Mediterranean country. Based on the current state, on foreseen trends and on the information presented in the literature review (conducted …
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The Comparative Agronomic Potential of Miscanthus X Giganteus and Panicum Virgatum as Energy Crops in Illinois
Bioenergy crops are rapidly gaining importance in the US and around the world. This dissertation describes 4 studies used to assess the comparative performance of Miscanthus x giganteus and Panicum virgatum as energy crops in Illinois. (1) A literature review of M. x giganteus experience in Europe …
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Suitability of energy cropping on abandoned metal contaminated farmland.
… globally on the viability of alternative energy sources given the potential effects of climate change and increases in oil prices. Energy cropping is one of many emerging technologies for producing renewable energy that is being widely researched around the world, and is in fullscale …
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Growing crops for biofuel and forage while conserving soil and water
… maybe needed to meet the demands of these bioenergy facilities. Thus, the development of regional dedicated energy crop systems is a high priority. Our objectives were to: a) assess the impacts of growing WSG on water storage, soil physical and hydraulic properties, soil organic carbon (SOC) …
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Hydrogen production via dark fermentation of carbohydrate-rich substrates
… of carbohydrate-rich waste organics and energy crops to hydrogen using mixed microflora could contribute to the mix of technologies for producing hydrogen sustainably. Naturally available mixed microflora can be enriched e.g. by heat treatment to select for hydrogen producers, typically …
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International biogas applications
… fraction of municipal solid waste (OFMSW) and energy crops are preferred due to their higher methane yields. Concerns about the sustainability of the use energy crops for biogas production have reduced the use of these substrates worldwide, which has encouraged the research on algae feedstock …
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Evaluating Economic Impacts of Switchgrass Harvest Time
… deals with cost of production for cellulosic energy crops of switchgrass, miscanthus, and energy sorghum. The first chapter explains the rationale for development of decision support software called Energy Crop Analysis & Planning (ENCAP) and Switchgrass Harvest Date, Yield, Nutrient Removal …
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Nitrogen, phosphorus and potassium removal from perennial energy grasses when grown on wet marginal land
… there is considerable potential for perennial energy crops to remove excess nutrients when grown on a riparian buffer; however, a specific recommendation for species selection and best management practices including N fertilization and harvest timing will be dependent on the desired outcome for …
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CO₂ emissions reduction potential of aviation biofuels in the US
… and forestry residues, and cultivated energy crops. Using only fuels derived from residues and wastes, up to 35% of US jet fuel demand could be met, corresponding to a 28% reduction of CO₂e. The results are most sensitive to assumptions on the distribution of fuel products, and …
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DEFATTED SEED CAKES RECOVERY TO INCREASE BIOFUEL PRODUCTION SUSTAINABILITY FROM SECOND-GENERATION OIL-CROPS
The Renewable Energy Directive (RED II) requires biodiesel to reduce greenhouse gas (GHG) emissions by at least 65% compared to fossil fuels. Most first-generation oil crops cannot reach this threshold due to high costs and competition with food, while newgeneration oils, which have emerged in …
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Priming the Pump with Grass, Trees, and Waste: An exploration of biofuels policy and research discourse and its potential to alter living spaces
… as a means of securing a reliable, sustainable energy supply. They appear to offer significant potential by virtue of being harvestable from common plant life such as prairie grasses. I argue that a shared set of knowledge claims emerging from multiple energy/environmental institutions in …
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Harvesting machinery technologies for precision and sustainable sugarcane production
… errors. The quality of cut with perennial energy crops such as sugarcane is of considerable importance as damage inflicted on cut stems and root systems affects ratooning and causes a reduction in yield. This study also aimed at investigating the impact on sugarcane cut quality of four …
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Assessment of Sustainable Aviation Fuel Production Potential Using Crop Allocation Optimization
… for the aviation sector from the International Energy Agency (IEA). The demand for jet fuel in the U.S. can be fulfilled with 100% SAF, resulting in 21.3% emission savings if optimized for minimum emissions and assuming the use of energy crops. Incorporating lignocellulosic biomass could result …
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Costs of maintaining the conservation reserve program in Illinois in the presence of biofuels
… policies that provide subsidies to induce energy crop production on expiring CRP land. We also explore the mix of biofuels produced from corn and various cellulosic feedstocks over this period under these policies. Our results show that in the presence of biofuels, to maintain CRP …
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Heat of combustion of algae for use in a diesel engine
… without any access to electricity or modern energy, strategies for providing energy are very important. While the use of fossil fuels can bring the much needed energy to these areas they come with a host of problems. Fossil fuel use contributes to greenhouse gas emissions, air pollution and …
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