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 665 for “"Feedstock"”.
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Production of biocoal from wastewater sludge-biomass feedstock
Thesis submitted in fulfilment of the requirements for the degree of Master of Engineering: Chemical Engineering, Durban University of Technology, Durban, South Africa, 2022.
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MODELING AND OPTIMIZATION OF BIODIESEL REACTOR AND FEEDSTOCK
… major hurdle in its development with the cost of feedstock (oil) contributing approximately 60% to 80% of the total production cost. Furthermore, the quality of biodiesel is strongly affected by the choice of feedstock. Therefore, selecting an appropriate feedstock is crucial for both minimizing …
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Modeling and Analysis of a Feedstock Logistics Problem
… States. In this dissertation, we address a feedstock logistics problem associated with the delivery of switchgrass for conversion into biofuel. In order to satisfy the continual demand of biomass at a bioenergy plant, production fields within a 48-km radius of its location are assumed to be …
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Optimizing warm-season grasses for sustainable bioenergy feedstock production
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2020-05-01
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Organic waste management for EBI in Quebec, feedstock analysis
… alternative to landfilling. The selection of the feedstock is a key success factor for an anaerobic digestion project. Based on an extended literature review, an investigation of organic waste available to EBI and a multi-criteria analysis, it is recommended to use a mix of food waste, dewatered …
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Sustainable materials from renewable protein feedstock and waste rubber
… sustainable materials from underutilized feedstock, namely proteins and waste rubber from used car tires. Valorization of proteins for use in engineering plastics can reduce reliance on fossil fuels for materials manufacturing, as well as increase economic viability of agriculture and …
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Pyrolysis Processing and Feedstock Impact on Biochar Soil-Plant Interactions
… properties depend on pyrolysis process and feedstock source. Objectives of this research were to evaluate the effects of four biochars developed from two feedstocks, switchgrass (Panicum virgatum L.) and corn stover (Zea mays) using two methods of pyrolysis (fast and slow) on: 1. water …
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Systems informatics and analysis for optimization of biomass feedstock provision
… and analysis for optimization of biomass feedstock provision. The ConSEnT approach for large-scale biomass supply chain management was developed through the integration of operations research, geographic information systems (GIS), processing modeling, techno-economic analysis, and …
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Biomass characterization and reduced order modeling of mixed-feedstock gasification
… accurately simulate the gasification of a mixed feedstock of biomass and coal. The GE 2700tpd gasifier was used because it is a widely used technology. The characteristics and state of the art in biomass conversion models were applied in the expanded ROM to model coal-biomass mixture …
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Improving the bioconversion of lignocellulosic feedstock to bio-fuels and chemicals
This study investigated the fate of lignocellulosic biomass (wheat-feed and perennial rye grass) in different anaerobic digestion systems, evaluating the role of substrate specificity on the pattern of degradation. The two-stage (biohydrogen-biomethane) anaerobic system was found to be more …
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Techno-Economic Feasibility of Distributed Torrefaction Systems Using Corn Stover Feedstock
… biorefining systems using corn stover feedstock to generate value-‐added products. Distributed torrefaction systems have the potential to operate on private agricultural enterprises as well as community-‐scale processing facilities, similar in scale to local grain elevators. …
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High solid loading aqueous base metal/ceramic feedstock for injection molding
Increasing volume fraction of metal powder in feedstock provided lower shrinkage. Reduction of the shrinkage results in better dimensional precision. The rheology of the feedstock material plays an important role to allowing larger volume fractions of the metal powder to be incorporated in the …
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Economic and environmental evaluation of miscanthus sustainability as a bioenergy feedstock
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-08-01
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Design of Tactical and Operational Decisions for Biomass Feedstock Logistics Chain
… decision support tool is introduced to aid the "feedstock manager" at the bio-refinery by recommending which satellite storage facilities to unload, how much biomass to ship, how to allocate existing resources (trucks and unloading equipment sets) during each time period, and how to route …
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Opuntia ficus-indica: a climate-resilient biomass feedstock for low-input drylands agriculture
Prickly pear cactus (Opuntia ficus-indica) is a rapidly growing member of the Cactaceae that thrives in semi-arid and arid regions with many beneficial traits compared to other species grown under drylands conditions. O. ficus-indica is currently used as a food crop, a forage and fodder for …
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Modeling the profitability of Camelina Sativa as a biofuel feedstock in eastern Colorado
… of growing Camelina Sativa as a biofuel feedstock on farms in northeastern Colorado. Camelina Sativa is an oilseed feedstock that can be used to generate straight vegetable oil that has the potential to displace a large percentage of the diesel fuel used by farmers. Offsetting significant …
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Investigation into coatings produced from nanoparticle blended feedstock for rotating equipment repair applications
… with conventional and nano particle blended feedstock material is considered in relation to repair applications of rotating equipment. Gas Metal Arc Welding (GMAW) and Wire Arc Spray (WAS) processes are used to produce the coatings on carbon steel workpieces. The wire arc sprayed workpieces …
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Using the greet model to analyze algae as a feedstock for biodiesel production
… to determine the viability of using algae as a feedstock for biodiesel. The method involves assessing energy use, fossil fuel use, greenhouse gas emissions, and criteria pollutant emissions using a simulation developed by Argonne National Laboratory. The energy and emissions of algae-derived …
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Feedstock-To-Tailpipe Analysis of Soybean-Derived Biodiesel and Glycerol Valorization in Kansas
… due to its production from renewable or waste feedstocks and direct use in compression-ignition engines. Biodiesel is currently fabricated via oil transesterification which also produces crude glycerol as a byproduct. The crude glycerol has low economic value and is often disposed of directly …
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