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 26 for “"petrochemicals"”.
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Thermal conversion of algal biomass and its derivatives to fuels and petrochemicals
Submitted in fulfilment of the requirements for the degree of Doctor of Engineering: Chemical Engineering, Durban University of Technology, Durban, South Africa, 2021.
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Strategy, flexibility and human resource management: a study of the outsourcing of maintenance in UK petrochemicals
… encompasses a coherent caucus of work within the petrochemicals industry in the UK. The thesis provides evidence which confirms the widespread use of a strategy of flexibility but challenges the conception of strategy as a deliberate formal plan, and the rational economism of Transaction Cost …
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Analysing the Impact of the World Trade Organisation (WTO) on the Sustainability of Competitiveness of the Petrochemical Industry in Saudi Arabia
… growing into a centre for production of petrochemicals in the world. Owing to the competitive and none fluctuating price of natural gas, investments in olefins and derivatives have increased, which also bring high returns. The aim of this research, hence, is to analyse the impact of Saudi …
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BATTERY USAGE IN THE FUTURE FLEET
… technology even begins to approach that of petrochemicals, which we believe is many years away if possible.
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Simulation and Comparison of Operational Modes in Simulated Moving Bed Chromatography and Gas-Phase Adsorptive Separation
… popular in separating and purifying enantiomers, petrochemicals, pharmaceuticals and biochemicals with higher yield and lower solvent consumption. We simulate and compare several operational modes of simulated moving bed (SMB) for a binary and a ternary bioprocess using Aspen Chromatography. These …
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Bioplastics from C1 Gases - Substitute Sustainable Products for Polymer Coated Steel
… of coatings on the market, are derived from petrochemicals, a biodegradable product with comparable properties would contribute to reduce the negative environmental impacts of the steel industry. Petrochemicals are derived from petroleum, a fossil carbon source with limited availability and a …
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A critical and comparative analysis of the under regulation of underground storage tanks in South Africa and the attendant consequences for environmental resources
… in particular, namely, pollution resulting from petrochemicals leaking from underground storage tanks (“USTs”) situated at fuel retailer outlets and truck stops. These hazardous substances can contaminate nearby groundwater and soil causing a multitude of problems including the contamination and …
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Optimization of hydrophobic meshes for oil spill recovery
Widespread use of petrochemicals often leads to accidental releases in aquatic environments, occasionally with disastrous results. Recent advances in the understanding of selectively wetting surfaces have led to the development of functionalized steel meshes with hydrophobic and oleophilic …
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Renewable Energy in Industrial Applications
… as ferrous and non-ferrous metals, chemicals and petrochemicals, non-metallic mineral materials, and pulp and paper. In these sectors, energy costs constitute a large proportion of total production costs, so managers pay particular attention to driving them down. As a result, the scope to improve …
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Catalytic upgrading of muconates for renewable chemical applications
… energy demand. As the market demand for petrochemicals are only forecasted to grow, development and advancement of renewable chemical processes is timely. Lignocellulosic biomass presents as a promising alternative source for these aromatic monomers due to the diverse structure and …
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Selective Oxidations by Iron(III) Porphyrins and Iron(III) Corroles
… in chemical synthesis in the pharmaceutical and petrochemicals industries, and possible the decontamination of harmful substances. However, oxidations reaction are among the most challenging processes to control. Many stoichiometric oxidants with heavy metals are expensive, or toxic maybe both, …
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Plant-based admixtures for cement-based materials
… They are however predominantly derived from petrochemicals and hazardous substances that pose environmental, occupational, and health risks during manufacture, use, and disposal. This study investigates environmentally friendly plant-based alternatives to conventional water reducers with the …
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Estimating life cycle carbon emissions of the global oil supply chain at a high-resolution using optimization in a network model
… certain applications such as aviation and petrochemicals have limited short-term, scalable alternatives. On this backdrop, there is an increasing push for better emissions reporting throughout the supply chain and regulatory mandates at making climate friendly choices. Notable examples …
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100% petroleum house
… in Iraq, and demonstrate the capacity of petrochemicals as a building material. In the Western hemisphere an abundance of trees provides wood, an easy to work with construction material. In contrast, Iraq currently lacks a pervasive natural resource for construction. However, Iraq does …
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Quantifying barriers to recycling plastic packaging in the United States
… landscape in the US. Lastly, I discuss the petrochemicals value chain and the significance of displacement in realizing the expected environmental benefits of plastics recycling.
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Selective dehydration of polyols over solid acids and metal-acid bifunctional catalysts: Towards a catalytic toolbox for rational catalyst design
… in biorenewable alternatives to existing petrochemicals has lead to increased interest in catalytic means of upgrading sugar-derived molecules into useful commodities. While some biorenewable chemicals aim to break into the existing market as a new product (polylactic acid, or PLA, is one …
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Apartheid in Schaarbeek: Belgian Migrant Labor and Human Rights in Europe’s Carbon Transition, 1945-1973
… such as coal mining, car manufacturing plants, petrochemicals and domestic work. However, many of these “temporary workers” were also denied access to basic living conditions and political participation, thus giving rise to conventional idea of “permanent temporality” within the scholarly fields …
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Free Volume Manipulation Techniques of Polymer Membranes for Gas Separations
… natural gas separations for power generation and petrochemicals. In the United States, separation processes consume about 16 quadrillion BTU of energy per year, with nearly half of that energy consumption coming from energy-intensive and thermally-driven processes such as distillation. Using …
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Sustainability within the polyester value chain
… were increased over materials derived from petrochemicals. Biomass can also be used for generating process heat or electricity. It was found that the best possible use of biomass within the PET value chain would be combustion to supply process heat, followed closely by burning to generate …
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System and Reactor Design, and Materials Testing, for Efficient Thermochemical Solar Fuel Production in Temperature/Pressure Swing Redox Cycles
… chemical processes in the fertilizer, petrochemicals and metal refining industries. While electrochemical water splitting has high TRL its cost is higher than future targets, especially when coupled with transient renewables. In this thesis we consider solar thermochemical hydrogen …
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