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 37 for “"Biomass 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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Systems informatics and analysis for optimization of biomass feedstock provision
… How to develop an efficient and effective biomass production and provision system is important for successful large-scale biofuels production. The overall objective of this dissertation is to develop multiple-scale supply chain optimization models and decision support tools to facilitate …
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Design of Tactical and Operational Decisions for Biomass Feedstock Logistics Chain
… A key aspect in the production of biofuel is the biomass logistics chain that constitutes a complex collection of activities, which must be judiciously executed for a cost-effective operation. In this thesis, we introduce a two-phase optimization-simulation approach to determine tactical biomass …
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Opuntia ficus-indica: a climate-resilient biomass feedstock for low-input drylands agriculture
… as a model to understand adaptations that allow biomass productivity on semi-arid lands and as a platform for producing food, forage, fodder, and fuel in areas uninhabitable by traditional crops. Molecular analysis of the Opuntia cuticle has identified putative polymeric aldehydes in the …
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Decision support for biomass feedstock production enabled by concurrent science, engineering and technology (ConSEnT)
… energy resources under consideration, but biomass-based energy is of particular importance given that it is currently available in large quantities. Specifically, lignocellulosic ethanol is considered among one of the leading alternative energy options in terms of sustainability and …
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Feasibility and technoeconomic analysis of small-scale biomass to power system with novel producer gas cleanup technology
… world, a number of factors make small-scale biomass to power systems an interesting proposition. One such iteration of this technology involves novel producer gas cleanup and tar removal, where instead of using chemical processes, the system employs rich partial combustion through …
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Economies of scale analysis and location studies for fuel ethanol refineries
… to this development is high production costs. Biomass feedstock costs account for more than 30% of the total operational cost. The Area Utilization Factor (AUF) is a significant index representing the amount of agricultural residues or energy crops that can be collected and delivered to ethanol …
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Modeling, Analysis, and Algorithms for Some Supply Chain Logistics Optimization Problems
… address the design and logistics operation of biomass feedstock supply chain. To that end, we consider two problems. The first of these problems arises in the context of delivering biomass sorghum to a biorefinery. We propose multi-period, mixed integer linear programming models, which …
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Quantifying the economic potential of a biomass to olefin technology
… be used to conserve oil is worth studying. Biomass waste to olefin (WTO) technology replaces the use of oil as a feedstock. WTO technology is actually a combination of two different processes: the waste to methanol (WTM) process and the methanol to olefins (MTO) process. However, WTO …
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Lab-scale fast-hydropyrolysis and vapor-phase catalytic hydrodeoxygenation for producing liquid fuel range hydrocarbons from intact biomass
… sources. Sustainably available lignocellulosic biomass, as a renewable form of atmospheric carbon, could be utilized to produce hydrocarbon-based fuels with high energy density. One of the process options for this conversion is the <em>H2Bioil</em> process, where biomass is rapidly heated in a …
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Biofuel supply chain restructuring -- An economic viability and environmental sustainability investigation for enhancing second generation biofuel adoption
… 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 in both industry and academia to commercialize second generation biofuel manufacturing technology, …
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Effects of Biochar Application on Soil Fertility and Pearl Millet (Pennisetum glaucum L.) Yield
… by differences in soil properties and climate, biomass feedstock, pyrolysis processes, and biochar handling, as well as experimental set-up.
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Gasification of in-Forest Biomass Residues
… Ponderosa Pine sawmill residues at high biomass loadings, short mean residence times (2-5 sec), and 27.7 MPa pressures. Each run with the SCWG system typically processed several 100 g of biomass/water slurry mixture. We evaluated the effect of operating temperatures (from 700K to 900K) …
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Agro-Climatic And Land Suitability Mapping For Switchgrass Grown As A Bioenergy Crop In North Dakota
… tall-grass prairie. The plant is immense biomass producer and can reach heights up to three meters or more in wet areas. Its high lignocellulosic content makes switchgrass an appropriate candidate for bio-ethanol production. Annual crops, used for bioenergy production such as corn, …
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Biodiversity Impact of China's Power System Transition From a Life Cycle Perspective
… markedly—by up to 4–6 times—driven mainly by biomass expansion and large-scale renewable deployment. Biodiversity impacts assessment has further confirmed a fundamental biodiversity trade-off: although decarbonization can successfully alleviate global warming and pollution-related biodiversity …
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Hydrothermal liquefaction of microalgae: Influence of varying cell compositions on biocrude yield and quality
… to the numerous advantages of microalgae as a feedstock. Hydrothermal Liquefaction (HTL) is a thermochemical process that uses water as the reaction medium to convert biomass into biocrude oil under elevated temperatures and pressures (200–350°C, 5–20 MPa). While there is extensive literature …
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Productivity, Carbon Sequestration, Nutrient Accumulation, And Species Interactions In Perennial Biomass Alley Cropping Systems
Perennial biomass production in agroforestry systems has been promoted as a strategy to increase productivity and ecosystem services from marginal agricultural lands. However, little is known about appropriate species combinations and production potential for biomass crops in agroforestry systems. …
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Renewable energy technologies assessment in providing sustainable electricity to Nigerian rural areas.
… electricity in Nigeria's rural areas. Biomass energy technologies (BETs) are the most appropriate RET given significant resource availability. However, cost has been identified as the major barrier in adopting BETs. Both BETs and grid extension (GE) systems have been assessed. Whole …
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The pre-treatment and pyrolysis of biomass for the production of liquids for fuels and speciality chemicals
Fast pyrolysis of biomass is a significant technology for producing pyrolysis liquids [also known as bio-oil], which contain a number of chemicals. The pyrolysis liquid can be used as a fuel, can be produced solely as a source of chemicals or can have some of the chemicals extracted and the residue …
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