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Skip to Search Results- 2Liu, Qingxia (Chemical and Materials Engineering)
- 2Xu, Zhenghe (Chemical and Materials Engineering)
- 2Yeung, Anthony (Chemical and Materials Engineering)
- 1Boluk, Yaman (Civil and Environmental Engineering)
- 1Choi, Phillip (Chemical and Materials Engineering)
- 1Dr. John SHAW (Chemical and Materials Engineering Department)
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Characterization of mature fine tailings in the context of its response to chemical treatment
DownloadFall 2010
Continuous accumulation of Mature Fine Tailings (MFT) is a major challenge to oil sands industry. To reduce the inventory of MFT through development of novel tailings treatment technologies, it is essential to understand the stabilization mechanism of fine solids in MFT. This project aims at...
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MODELLING THE RHEOLOGY OF COMPLEX FLUIDS : Cases of Bitumen and Heavy Oils at low temperatures.
DownloadFall 2011
As complex fluids such as heavy oil or bitumen pass from the field to process units, structural and compositional changes occur that are intimately linked with pressure (P), temperature (T), and shear histories. In this exploratory work, a modified Structural Kinetics Model is used to calculate...
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Fall 2013
In this thesis, a cellulose nanofibril (CNF) preparation method in the biorefinery platform is described, and the product is characterized and compared to commercially available varieties. CNF is a bundle of cellulose microfibrils with diameter in 5-100 nanometer range and length reaching to...
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Fall 2014
Mineral carbon sequestration (MCS) is a type of carbon storage based on natural rock weathering processes where CO2, dissolved in rainwater, reacts with alkaline minerals to form solid carbonates. Although MCS has advantages over other carbon storage techniques, an economic MCS process has not...
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Hydrothermal Treatment of Low Rank Coal for Making High Solid Loading and Stable Coal Water Slurries
DownloadFall 2014
The objective of this research is to understand the effect of hydrothermal dewatering (HTD) on surface properties, stability and rheological behavior of lignite water slurry (LWS). The surface forces between coal particles are found to be attractive after HTD, which is proven by contact angle and...
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Rheology of Bitumen at the Onset of Asphaltene Aggregation and its Effects on the Stability of Water-in-Oil Emulsion
DownloadFall 2015
Asphaltenes are the heaviest fraction of bitumen. Asphaltenes not only play an important role in the high viscosity of bitumen but also in the water-in-oil (W/O) emulsion stability. Nevertheless, their exact function in the stability mechanism of W/O emulsion still remains unresolved. It is...
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Fall 2015
The rheological properties of heavy oil and bitumen depend on factors such as temperature, pressure, diluent type and diluent composition, as well as sample shear and thermal histories and shear conditions during measurements. Each of these factors can affect the value of apparent viscosity...
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Spring 2016
Thickened tailings technology is implemented in some oil sands operations in order to recycle warm process water, thereby reducing net water draw, and to reduce the size of tailings impoundment areas. The rheology of thickened tailings is complex and time-dependent, and the underlying mechanism...
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High-Float Emulsion Residue: A New Rheological Model Based on the Existence of a Yield Stress
DownloadFall 2016
“High-float” (HF) emulsions are dispersions of micron-sized bitumen droplets in water, with a special type of anionic surfactant functioning as stabilizer. By allowing the water to evaporate from an HF emulsion, what remains is called a “high-float emulsion residue.” Although indistinguishable in...
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Fall 2018
The production of a tailings waste stream is ubiquitous to mining and mineral processing operations, especially in Alberta’s oil sands industry. Due to the presence of colloidal clays such as kaolinite, which do not naturally sediment in suspension, water recycling and land reclamation remain...