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Skip to Search Results- 1Collins, Catherine
- 1Collins, Catherine Elizabeth Victoria
- 1Ifill, Roy O.
- 1Moran Nava, Daniel A
- 1Salehi, Mohammadreza
- 1Thomas, Tenny
- 2Masliyah, Jacob (Chemical and Materials Engineering)
- 2Siddique, Tariq (Renewable Resources)
- 2Xu, Zhenghe (Chemical and Materials Engineering)
- 1Dr. Leonidas Perez Estrada,Civil & Environmental Engineering
- 1Dr. Yang Liu, Civil & Environmental Engineering
- 1Etsell, Thomas H. (Chemical and Materials Engineering)
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Spring 2010
Poor settling of solids increases land requirement for tailings containment and imposes severe constraints on the water balance. Consequent to these considerations, the alternating current electrocoagulation (AC/EC) technique emerged as a candidate for enhancing the settling behaviour of...
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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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Fall 2014
The oil sands tailings generated after bitumen extraction are permanently contained in lake-size ponds. Primarily the tailings ponds are used to settle the solid particles so the cap water could be recycle back to the extraction operations, while the tailings with higher concentration of...
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Spring 2011
Bitumen recovery by the water-based extraction process produces waste streams known as tailings. When discharged into the tailing ponds, the coarse solids in the tailings stream settle out quickly, while the fine solids accumulate over years of settling to a solids content of 30-35% by weight....
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Spring 2012
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...
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Methane Production and Emission Mitigation in Oil Sands Tailings Concurrent with Hydrocarbon Degradation under Nitrogen Limited Conditions
DownloadFall 2020
Alberta’s oil sands generate large volumes of tailings from bitumen ore processing. These tailings ponds produce biogenic methane, which can be measured across 60-80% of the tailings surface. Based on current surface area data and emissions studies, tailings ponds could account for 8% of Canada’s...
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Fall 2013
Collins, Catherine Elizabeth Victoria
Surface mining for bitumen extraction results in production of tailings that are deposited into large ponds. Tailings in the ponds support diverse microbial communities capable of metabolizing organic compounds and producing biogenic gases (methane, CH4 and carbon dioxide, CO2). Because of low...
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Spring 2017
Mature fine tailings (MFT) are one of the major problems of the oil sands industry in Alberta, specifically due to the reclamation of the land filled with them. Stepping away from the most common approach of dewatering processes, this research is based on the manufacture of useful composite...