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- 1Amoako, Kwaku Akrofi
- 1Beier, Nicholas A
- 1Davey, Stepheney
- 1Gumfekar, Sarang P.
- 1Haroon, M Hasin
- 1Laberge, Scott
- 1Beier, Nicholas (Civil and Environmental Engineering)
- 1Dr. Qi Liu (Chemical and Materials Engineering)
- 1Joseph, Tim (Mining Engineering)
- 1Liu, Qi (Chemical and Materials Engineering)
- 1Morgenstern, Norbert (Department of Civil and Environmental Engineering)
- 1Morgenstern, Norbert R. (Civil and Environmental Engineering)
Amylopectin-graft-hydrolyzed-poly(methyl acrylate) (AP-g-H-PMA) Flocculants for the Treatment of Oil Sands TailingsDownload
The extraction of bitumen from the Alberta oil sands reserves has long been a major economic contributor to the Canadian society, but the impact this industry has had on the environment has raised concerns worldwide. The main problems are how to reclaim the area and reduce the number of tailings...
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...
The accumulation of oil sands tailings poses serious environmental issues in Alberta, Canada. In the tailings ponds, the fine clays and residual bitumen form the so-called mature fine tailings (MFT) which contain 30~40 wt% fine solid particles primarily below 44 µm in size, 1~3 wt% residual...
This research aims to assist in the assessment of tailings management technologies through the development of a dynamic simulation model. The developed model (TMSim) incorporates the mine plan, various stages of dewatering including classification, pre- and post-deposition dewatering, and an...
Flocculation and dewatering of kaolinite suspensions and oil sands mature fine tailings using dual polymersDownload
The development of a method to consolidate and dewater Athabasca oil sands mature fine tailings (MFT) is one of the major challenges facing Alberta’s oil sands industry. This thesis presents studies performed on the flocculation and dewatering of kaolinite suspensions (the major clay component...
Reclamation of oil sands fluid fine tailings (FFT) is a challenge for mine operators in Alberta because of their high water content and slow self-weight dewatering. Chemical additives, including polymer flocculants, are used by operators as a treatment technology to reduce volumes and increase...
Tailing ponds in Northern Alberta has covered an area of 170 km2. Directive 074 issued in 2009 set stringent criteria for tailings reclamation. Freeze-thaw dewatering is one of the most promising approaches for dewatering MFT as one cycle of freeze-thaw can release up to 50% pore water. In this...
The focus of the research presented here was to directly measure actual evaporation rates from a tailings surface using a micrometeorological technique known as the eddy covariance method. Depending on the results, it would be determined whether current drying models need to be calibrated with...
Certain areas of oil sands in Canada are mined and processed for bitumen production using hot water processes that produce a slurry waste, referred to as tailings. Sand particles in tailings quickly settle and produce mature fine tailings (MFT), which are stored in large tailing ponds. Currently,...
Stabilization of Centrifuged Fluid Fine Tailings Using Native Vegetation - Supplemental FilesDownload
Contains supplemental data files related to the thesis: "Stabilization of Centrifuged Fluid Fine Tailings Using Native Vegetation", Scott Laberge, 2022.