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 35 for “"Biorefineries"”.
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Fodder legumes for Green Biorefineries
… to analyse the sustainable feedstock supply for biorefineries. In contrast to most studies on biorefineries, I focus on the sustainable provision of feedstock and not on the bioengineering processing of whatever feedstock is available. Grasslands provide a high biomass potential. They are often …
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Production of levulinic acid in urban biorefineries
… therefore indicated that integrated cellulosic biorefineries, whose feedstock is abundant lignocellulosic plant matter rather than scarce starch, are a vital area for research, development, and commercialization. This thesis evaluates the commercial viability of cellulosic biorefineries in and …
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Techno-economic analysis of furfural derivatives in integrated sugarcane biorefineries
… chains have increased interest in sugarcane biorefineries for producing value-added, bio-based chemicals. This study integrated techno-economic analyses (TEA) and cradle-to-gate greenhouse gas (GHG) assessments of five furfural-derived products: tetrahydrofuran (THF), 2-methyltetrahydrofuran …
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Exploring the factors at play to make wastewater biorefineries a reality
This thesis concerns the topic of wastewater biorefineries (WWBR), in which wastewater is not seen simply as a waste stream to be cleaned but as a valuable material flow to be converted into bioproducts, while still meeting discharge limits at the end. To set the scene, similar developing …
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Engineered Biomass Deconstruction: A Multidisciplinary Investigation Towards Understanding Mechanical Refining and its Applications in Lignocellulosic Biorefineries.
North Carolina State University Theses Forest Biomaterials.
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Incorporation of location-specific parameters and policy incentives in the Techno-Economic Analysis (TEA) of biorefineries
… factors. Twenty-four tax incentives available to biorefineries were also evaluated. All location-specific parameters and 5 of 24 tax incentives had observable effects on the minimum fuel selling price. Across realistic ranges of parameter values observed in the United States, the influence of …
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Synthetic polymers from building block chemicals produced by biorefineries - PLA-based polyesters and galactaric acid-based polyanhydrides
… derived materials with renewable alternatives. Biorefineries target in comprehensive utilization of all components of biomass with similar principles than conventional petroleum refinery. Improved product portfolios have started to emerge from already existing side-streams of agriculture and …
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Lignocellulose Saccharification via Cellulose Solvent Based Fractionation Followed by Enzymatic Hydrolysis: the Last Obstacle to Integrated Biorefineries
… technical and economic challenge for emerging biorefineries is cost-effective release of fermentable sugars from recalcitrant structure of lignocellulosic biomass. Cellulose- and organic-solvent-based lignocelluloses fractionation (COSLIF) technology was employed to overcome biomass …
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Navigating the opportunity space of oilcane biorefineries through bioSTEAM, an open-source platform for streamlined design and process simulation
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Techno-economic analysis and environmental assessment of isobutene, sustainable aviation fuel, omega-3 and omega-6 oils, and sophorolipid production in integrated sugarcane biorefineries
… prices. Within this context, integration of biorefineries to produce high value bioproducts, thereby diversifying revenue streams, has been proposed to alleviate effects of these challenges. Sugarcane materials such as molasses, bagasse, and sugarcane harvest residues could be used to produce …
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Characterization and engineering of sugar transporters in the yeast Kluyveromyces marxianus for biotechnological applications
… of lignocellulosic hydrolysates in yeast-based biorefineries requires the simultaneous consumption of all the sugars present in this raw material, hexoses and pentoses. This represents a key bottleneck because of the low number of specific pentose transporters identified and the slow rate of …
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Optimization of an integrated grain-biomass-ethanol supply chain with event-based decision-making
… costs when compared to stover-only biorefineries, and that GHG emissions aren’t significantly different when comparing co-fermentation and stover-only biorefineries. The optimization also shows that, in order to reduce costs and GHG emissions, the biomass should be sent to a CSP …
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In Vitro Synthetic Biology Platform and Protein Engineering for Biorefinery
… required to establish sustainable biomass-based biorefineries. Replacing fossil fuels with renewable biomass as a raw feedstock for the production of chemicals and biofuels is a main driving force of biorefinering. Almost all kinds of biomass can be converted to biochemicals, biomaterials and …
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Evaluating Economic Impacts of Switchgrass Harvest Time
… harvest date may be optimal for the producer, biorefineries may be interested in sourcing switchgrass earlier and later than that profit-maximizing harvest date. Hence price premia that need to be paid to the producer for alternative harvest dates are calculated. The final chapter provides a …
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The design of a bioenergy potential map and a GIS-enabled optimization model for biofuel production in India
… large inventory of biomass, but the operation of biorefineries has been difficult due to the uncertainty in biomass availability and the lack of biomass supply chain management in the industry. To help biorefinery operators make strategic decisions, this study develops a model that optimizes and …
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Engineering robust yeast strains for the conversion of xylose derived from lignocellulosic biomass to xylitol
… and economically viable 2G biofuels industry, biorefineries must coproduce high-value, low-volume bioproducts alongside high-volume, low-value cellulosic ethanol. This can be realised with the co-production of the low-calorie sugar substitute, xylitol which has a well-established market, as …
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Enhancing microalgal biomass harvesting efficiency using thermoresponsive polymers
… promoting the commercialization of microalgae biorefineries. Overall, this study demonstrates the significant potential of PNIPAM as a novel approach for the efficient harvesting of microalgae, addressing key challenges in the commercialization of microalgae-based biorefineries. This research …
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Water requirement for biorefinery to meet the renewable fuel standard in the contiguous United States
… a constraint on water consumption is imposed for biorefineries, up to 1.2 billion Gallon/year cellulosic biofuel production (7.5% of the renewable fuel standard mandated amount) will be affected. The total affected cellulosic biofuel production correlates strongly with the water use constraint …
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Effects of temperature conditions and heat treatment within a multiple effect evaporator on thin stillage fouling characteristics
… and environmental footprint of more than 200 biorefineries in the US. Thin stillage is the liquid fraction of unfermented materials from fermentation and is composed of carbohydrate, protein, fat and ash. Research on thin stillage fouling has focused on effects of corn oil, pH, Reynolds …
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Biorefinery feedstock availability and price variability : case study of the Peace River region, Alberta
… alternate feedstock sources identified to supply biorefineries in low-yield years. Since feedstock cost is a large component of total operating cost of a biorefinery, feedstock supply variability and delivered cost inconsistency should be primary decision criteria for any future biorefinery …
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