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- 20Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 2Helmholtz-Alberta Initiative
- 2Helmholtz-Alberta Initiative/Journal Articles & Research Abstracts (Helmholtz-Alberta Initiative)
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- 1Ania C. Ulrich (Civil and Environmental Engineering)/ Tong Yu (Civil and Environmental Engineering)
- 1Beier, Nicholas (GeoEnvironmental Engineering)
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Anaerobic biodegradation of hydrocarbons in different oil sands tailings ponds: key microbial players and main activation pathway of hydrocarbon biodegradation
DownloadFall 2016
Anaerobic biodegradation of hydrocarbons is an important process in oil sands tailings ponds, which directly affects consolidation of tailings and extent of greenhouse gas emissions from tailings ponds. Since tailings ponds from different operators differ due to extraction process, age of...
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Spring 2014
The objective of this study was to determine if there was any difference in the bioremediation of oil sands process-affected water (OSPW) and to quantify and identify bacteria present in different scenarios. Two reactors were compared in this study: an acetic acid amended OSPW bioreactor, (AAAO...
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Fall 2013
One of the current technologies used by the oil sands industry to reduce the volume of fluid fine tailings and create a dry landscape is production of CT (Composite Tailings) and NST (Non-Segregating Tailings). CT and NST are engineered tailings streams obtained by recombination of fines (MFT or...
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Assessing the mobility of metals and dissolved organics in pit-lake models containing PASS-treated fluid tailings
DownloadSpring 2024
Oil sands surface mining produces considerable quantities of fine fluid tailings (FFT). Several reclamation strategies are being investigated to address the environmental concerns related to long-term FFT storage. One promising sustainable tailings management approach is End Pit Lake (EPL);...
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Spring 2015
A large amount of fluid fine tailings (FFT) is stored in tailings ponds and is continuously accumulating from the extraction of bitumen from oil sands ore in northern Alberta. The FFT are high in water content and have a very slow dewatering behavior that requires many years for them to fully...
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Effect of Diluent Levels on Greenhouse Gases and Reduced Sulfur Compound Emissions from Oil Sands Tailings
DownloadSpring 2016
A well-known issue of tailings is that they have poor consolidation properties, which, in situ, may require several decades or more before the material can be reclaimed. With the accumulation of tailings in the tailings ponds, one unintended consequence of this long-term storage is the evolution...
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Effects of Enhanced Non-segregated Tailings, Root Hypoxia, and Salinity on the Growth of Commonly Used Oil Sands Reclamation Plant Species and Halophytes
DownloadFall 2023
In Alberta, Canada, oil sands mining activities have disturbed many boreal forest habitats and produced large amounts of tailings. Recently, a novel oil sands tailings management technology of the enhanced non-segregated tailings (eNST) has been developed, which uses polymers to accelerate...
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Spring 2022
This study investigated the mechanisms driving the dewatering and strength behaviour of polymer amended treated (centrifuged and in-line thickened tailings/ILTT) deep tailings deposits undergoing seasonal weathering dominated by a) multiple freeze-thaw cycles and b) alternating freeze-thaw and...
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Spring 2010
This research is an experimental, field and numerical study of the sedimentation and consolidation of in-line thickened oil sands fine tailings. In-line thickening is a process that adds flocculant and coagulant into a modified tailings pipeline in a multi stage fashion to improve the dewatering...
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In-Situ Real-Time Solids Content Measurement of Settling Oil Sands Tailings Based on a Light Scattering Technique
DownloadFall 2022
Subsurface solids content measurement of oil sands tailings ponds is essential for tailings management and land reclamation activities. Currently, solids content is primarily measured by manual sampling and offline analytical methods. Light scattering can be used to determine particle sizes and...