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Assessing the Potential of Activated Bauxite Residue (ABR) to Remove PFAS in the Water Column
DownloadFall 2024
Per- and polyfluoroalkyl substances (PFAS) belong to a group of synthetic organic compounds characterized by the substitution of at least one hydrogen atom with fluorine and the presence of other functional groups. Their high thermal and chemical stability makes PFAS resistant to removal and...
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Production and Application of Different Waste-derived Sustainable Materials for the Removal of Naphthenic Acids Related to Oil Sands Process Water
DownloadSpring 2024
Oil sands process water (OSPW) is generated in a large volume during the bitumen extraction process from the oil sands. Naphthenic acids (NAs) are recalcitrant compounds that contribute to the toxicity of OSPW, which need effective treatment before being released into the environment. In the...
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Fall 2023
Fixed beds are widely used in the chemical and process industry due to their simple yet effective performance. They find applications in heterogeneous catalysis (e.g., dry reforming of methane, methanol synthesis, etc.) and in adsorption (hydrogen from steam methane reforming, post-combustion CO2...
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Fall 2023
Biochar is a stabilized carbon with porous structure that can be used as an economical adsorbent for wastewater treatment. Since there are numerous types of biochars, it is important to understand how biochar characteristics influence adsorption performance by selecting or customizing biochars...
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Adsorbents for the Removal of Naphthenic Acids from Oil Sands Process Water: Investigation of Reclamation Materials from Surface Mining of Oil Sands and Development of Biochars from Biological Sludge and Peat
DownloadSpring 2023
Crominski da Silva Medeiros, Deborah C.
Oil sands process water (OSPW) is generated in high quantities during the extraction of the bitumen from the oil sands. Naphthenic acids (NAs) are recalcitrant compounds, corresponding more than 50% of all organics in OSPW. The efficient management of OSPW is of importance to guarantee efficient...
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Validation and Testing of a Numerical Model for the Design and Up-Scaling of Low Temperature Difference Stirling Engines
DownloadSpring 2023
This thesis presents the experimental validation, testing and review of a numerical model for low temperature difference Stirling engines (LTDSEs). The research of LTDSEs is motivated by the potential use of low temperature heat as an unconventional sustainable energy source. An experimental...
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Spring 2023
The increasing abundance of per- and polyfluoroalkyl substances (PFAS) has attracted growing interest due to concern about the potential hazards to public health and ecosystems. Due to PFAS toxicity, mobility, environmental persistence, and strong bioaccumulation, they are being further...
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Fall 2023
Graphite-forming events occurred throughout Earth history and extend up to solar and pre-solar contexts. However, a comprehensive understanding of the timeline of these events has been hindered by a lack of chronological information for graphite. Here we explore the geochronological potential of...
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Effect of Heat Exchanger Volume and Geometry on Power Output of a Low Temperature Difference Stirling Engine
DownloadFall 2022
This work presents the results of an investigation into heat exchanger design for low temperature difference Stirling engines (LTDSEs). The aim of this study was to determine if there is an optimum heat exchanger geometry for producing maximum power output for a LTDSE. There are multiple factors...
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Effect of adsorbate’s polarity, steric hindrance, aromaticity, and boiling point on competitive adsorption in a multi-staged countercurrent fluidized bed reactor using activated carbon and zeolite
DownloadFall 2022
Understanding the multi-component adsorption of volatile organic compounds (VOCs) is of essential importance for real-world engineering applications. Various properties of VOCs can affect their competitive adsorption when there is a mixture of these compounds in the process stream. This thesis...