Reference number : GC-2017-Q2-00362, amendment number : , agreement type : G, recipient legal name : Dambrowitz, Christopher (Northern Alberta Institute of Technology), recipient country : CA, recipient province : nan, recipient city : Alberta, recipient postal code : nan, program name english : Engage Grants for Colleges, program name french : Subventions d'engagement partenarial pour les collèges, program purpose english : Fluid fine oil sands tailings (FFT) remain suspended in oil sands tailings disposal ponds for decades as a result of the low settlement or consolidation rate. This study explores a method of treating FFT with lime or with lime and carbon dioxide to improve FFT dewatering, strength and release water quality and to demonstrate benefits for non-segregating tailings technologies. Graymont Western Canada Inc., a North American leader in  the supply of lime and limestone products, wishes to investigate the process performance using one of its lime products. NAIT's Centre for Oil Sands Sustainability (COSS), in collaboration with Graymont, will determine the impact of varying a) lime dosages and b) adjusting pH using CO2 on short- and long-term volume reduction as well as strength development in treated FFT. The residual bitumen removal from the treated FFT will also be recorded. This project builds a foundation for long-term collaboration as Graymont seek to position their technology into the Alberta oil sands marketplace. The technology has a strong potential to enhance economic and environmental sustainability in the oil sands industry. The objective of this project is to evaluate the suitability of adding lime, and lime plus CO2 in non-segregating and polymer-flocculated thickened tailings treatment processes. The suitability will be evaluated by investigating the impacts of iterative lime, and CO2, and polymer treatments on settling rate and final solids content, material strength, static yield stress, flow properties, rheology, and bitumen removal., program purpose french : Fluid fine oil sands tailings (FFT) remain suspended in oil sands tailings disposal ponds for decades as a result of the low settlement or consolidation rate. This study explores a method of treating FFT with lime or with lime and carbon dioxide to improve FFT dewatering, strength and release water quality and to demonstrate benefits for non-segregating tailings technologies. Graymont Western Canada Inc., a North American leader in  the supply of lime and limestone products, wishes to investigate the process performance using one of its lime products. NAIT's Centre for Oil Sands Sustainability (COSS), in collaboration with Graymont, will determine the impact of varying a) lime dosages and b) adjusting pH using CO2 on short- and long-term volume reduction as well as strength development in treated FFT. The residual bitumen removal from the treated FFT will also be recorded. This project builds a foundation for long-term collaboration as Graymont seek to position their technology into the Alberta oil sands marketplace. The technology has a strong potential to enhance economic and environmental sustainability in the oil sands industry. The objective of this project is to evaluate the suitability of adding lime, and lime plus CO2 in non-segregating and polymer-flocculated thickened tailings treatment processes. The suitability will be evaluated by investigating the impacts of iterative lime, and CO2, and polymer treatments on settling rate and final solids content, material strength, static yield stress, flow properties, rheology, and bitumen removal., agreement title english : Use of Lime as a Coagulant in Oil Sands Tailings Treatment, agreement title french : Use of Lime as a Coagulant in Oil Sands Tailings Treatment, agreement number : CARD1, agreement value : 25000.0, agreement start date : 2017-08-23, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada