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 59 for “"oil extraction"”.
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Contextual engineering for sustainable Kalahari melon oil extraction in rural Namibia
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Documentation and analysis of avocado oil extraction technologies in Leguruki, Tanzania
… Tanzania has been working on extracting oil from excess supplies of avocados since 2014 with the goal of adapting oil extraction methods to small-scale farmers. Through this process of extracting oil, the team has explored several iterations of avocado dryers, presses, and centrifuges. …
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Competing Sovereignties: Corporate Social Responsibility, Oil Extraction, and Indigenous Subjectivity in Ecuador
… CSR programs of a Spanish-owned multinational oil company, Repsol-YPF operating in the Ecuadorian Amazon region. It explores CSR programs as institutions that can facilitate ongoing resource extraction, and particular technologies of rule that serve to discipline indigenous peoples at the point …
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Design of a press for oil extraction from moringa seeds for Haiti
… tool for Haiti, a developing country, for the extraction of oil from the seeds of the moringa trees. Moringas have an extraordinarily nutritional potential that can help, at least short-term, to solve problems associated with poor nutrition in the area. Furthermore, moringas naturally prosper …
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Studies on the Quality of Soybean Oil: Extraction Method, Soybean Type, and Oxidative Stability
… alternative method for the production of soybean oil. It combines short time high temperature extrusion with a conventional screw press to obtain soy oil and meal of high quality. Different soybean varieties (some with altered fatty acid, lipoxygenase, and trypsin inhibitor levels) produce oils …
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Optimization of oil extraction from pomegranate seeds using ultrasound and hydrodynamic cavitation and characterization of bioactive profile
Η παρούσα μελέτη διερεύνησε τη βελτιστοποίηση της εκχύλισης ελαίου από σπόρους ροδιού μέσω της εφαρμογής δύο καινοτόμων και βιώσιμων τεχνολογιών σπηλαίωσης, της υπερηχητικής σπηλαίωσης και της υδροδυναμικής σπηλαίωσης. Στόχος της μελέτης ήταν η αξιολόγηση και σύγκριση της αποδοτικότητας των …
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Indigenous Knowledge Management Practices: Looking at the Historical Perspectives of Palm Oil Extraction in Ologbo Ikpoba-Okha of Edo State of Nigeria.
Palm oil is one of the most commonly produced vegetable oils in the world, palm oil provides more oil per hectare than soya beans, oilseeds or sunflower seeds. Although palm oil is a better source of vegetable oil than other types of crude oil, there is concern that the increase in the amount of …
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The Stabilizing Effects of Sesame Oil Extraction Technologies on Seasonal Fluctuations in Food Consumption and Nutritional Status of Rural Farming Households in The Gambia
… lean season. In 1995, the Small-Scale Sesame Oil Production project introduced an inexpensive, manual technology for edible oil extraction, called the ram press, to women in The Gambia. The overall aim of the project was to improve household nutritional security through the adoption of the ram …
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Sacrificial Zone or Living on Borrowed Time: Oil Exploitation in Northern Alberta and its Impact on the Athabasaca Chipewyan First Nation Community
… Chipewyan First Nation (ACFN) to the impacts of oil extraction in northern Alberta. The ACFN is one of many Aboriginal communities that have lived in northern Alberta for centuries. Historically, the community has relied on their natural environment for sustenance. The sources of livelihood for …
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Spatial variation of Allanblackia parviflora seed products in Ghana: Chemical and ethnobotanical exploration
The vegetable oil production is a very vibrant sector. Statistics show that in 2016/17 alone, production amounted to 185.8 million metric tons worldwide. However, this production is dependent on some selected vegetable oils such as soybean, coconut, palm, palm kernel, sunflower, olive, peanut, …
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Environmental and economic assessment of microalgae-derived jet fuel
… extracting, transporting, and processing algal oils to hydrocarbon fuels; and distributing and combusting the processed renewable jet fuel for a pilot scale facility. Specifically, lifecycle greenhouse gas (GHG) emissions, production costs, freshwater consumption, and land use were quantified …
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The impact of project flexibility on project choice and capital structure
… (ROA) as a process in the evaluation of an oil extraction project in Sub-Saharan Africa. It shows the benefits it can bring to not only the final project evaluation but also to the project design selection process. The research then extends the application of ROA by developing and applying a …
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Use of a non-inflammable solvent mixture for the extraction of tung oil
Tung oil, an important drying oil, is used in considerable amounts by the paint and varnish, linoleum, and electrical industries. At present domestic tung oil is obtained by mechanical expression. The cake which remains after expression has an oil content of from four to five per cent. Although the …
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Technoeconomic Analysis of Protein Extraction from Ethanol Defatted Cold Press Canola Meal via Dry Fractionation
… technoeconomic analysis (TEA) of protein extraction from ethanol defatted cold press canola meal to identify the cost-effective operating scale for the process. Brassica oilseed (canola/rapeseed) is the second most cultivated oilseed worldwide, after soybean. Canola cold-pressed cakes and …
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Algae Lysis with Pulsed Electric Fields
… the algal cell wall or membrane to separate oil from the rest of the algae biomass. Current lysing procedures use enzymes, pressure homogenization, and/or sonication to lyse cells; however, these methods are costly and complicate oil extraction [9], [10].</p> <p>This project examines a novel …
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Peanut oil press for developing countries
… have access to commercially produced vegetable oil (a common source of dietary fat), nor are industrial scale oil extraction methods appropriate for small scale production. As a result, they turn to traditional methods, such as a mortar and pestle, to extract oil from peanuts, sunflower seeds, …
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Managing labour under extreme risk: collective bargaining in the North Sea Oil industry.
… turbulent and high risk industry of North Sea oil extraction. To explain this, the study had to extend beyond the more usual focus of research attention, the inmediate relationship between employer and employee, to examine the wider commercial relationship between the major oil companies and …
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Construction of prototype system for directional solvent extraction desalination
Directional solvent extraction has been demonstrated as a low temperature, membrane free desalination process. This method dissolves the water into an inexpensive, benign directional solvent, rejects the contaminants, then recovers pure water, and re-uses the solvent. In order to bring this …
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Numerical Simulation and Optimization of Carbon Dioxide Utilization for Enhanced Oil Recovery from Depleted Reservoirs
… in CO<sub>2 </sub>utilization is the Enhanced Oil Recovery (EOR) from depleted reservoirs. In an Enhanced Oil Recovery system, a depleted or depleting oil reservoir is re-energized by injecting high-pressure CO<sub>2</sub> to increase the recovery factor of the oil from the reservoir. An …
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The design of a reduced diameter Pebble Bed Modular Reactor for reactor pressure vessel transport by railcar
… by railway, such as those in the Canadian Oil Sands at which the PBMR would be utilized for oil extraction processes. Therefore, a study was conducted to determine the feasibility of a Pebble Bed Modular Reactor design operating at 250 MWth with a core restricted to fitting inside an RPV …
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