A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Geotechnical properties of polymer-amended tailings solvent recovery unit (TSRU) oil sands tailings
Fine tailings from the tailings solvent recovery unit (TSRU) in the Athabasca oil sands are known to contain a relatively high pyrite content and a high residual hydrocarbon content, which may alter their geotechnical properties. Little is known about TSRU tailings properties and therefore the potential for subaerial deposition. The goal of this study was to investigate the geotechnical properties of untreated, polymer-amended, and sand-mixed TSRU tailings to provide information for the consideration of subaerial deposition and increase the general knowledge about these unique tailings. The polymer-amended tailings had more desirable properties for subaerial deposition, including a lower final void ratio, less energy required to desaturate, and higher compressibility, when compared with the untreated tailings. The sand-mixed samples enhanced these properties, but may pose issues for transportation. The mineralogy indicated that the polymer-amended TSRU tailings have a high-enough pyrite content for acid generation, which may pose environmental issues for subaerial deposition. Overall, TSRU tailings exhibited different geotechnical properties when compared with the well-studied mature fine tailings, highlighting the need for further studies to provide information for the management of TSRU tailings.
Geotechnical properties of polymer-amended tailings solvent recovery unit (TSRU) oil sands tailings
Fine tailings from the tailings solvent recovery unit (TSRU) in the Athabasca oil sands are known to contain a relatively high pyrite content and a high residual hydrocarbon content, which may alter their geotechnical properties. Little is known about TSRU tailings properties and therefore the potential for subaerial deposition. The goal of this study was to investigate the geotechnical properties of untreated, polymer-amended, and sand-mixed TSRU tailings to provide information for the consideration of subaerial deposition and increase the general knowledge about these unique tailings. The polymer-amended tailings had more desirable properties for subaerial deposition, including a lower final void ratio, less energy required to desaturate, and higher compressibility, when compared with the untreated tailings. The sand-mixed samples enhanced these properties, but may pose issues for transportation. The mineralogy indicated that the polymer-amended TSRU tailings have a high-enough pyrite content for acid generation, which may pose environmental issues for subaerial deposition. Overall, TSRU tailings exhibited different geotechnical properties when compared with the well-studied mature fine tailings, highlighting the need for further studies to provide information for the management of TSRU tailings.
Geotechnical properties of polymer-amended tailings solvent recovery unit (TSRU) oil sands tailings
Siddiqua, Sumi (author) / Dean, Courtney / Roberts, Deborah June
2017
Article (Journal)
English
Transportation , Tailings (Metallurgy) , Deposition , Solvents , polymer , Void ratio , Pyrite , polymère , Studies , soil-water characteristic curve (SWCC) , Compressibility (powder) , unité de récupération de solvants des résidus (TSRU) , Oil , tailings solvent recovery unit (TSRU) , Geotechnics , Sands , résidus de sables bitumineux , Information management , Compressibility , retrait , shrinkage , Geotechnology , Oil sands , Mine tailings , Sediment properties , Polymers , Recovery , courbe de caractéristique sol-eau de séchage (SWCC) , Mineralogy , non saturé , Energy , oil sands tailings , unsaturated , Properties , Tailings , Sand , Properties (attributes)
Geotechnical properties of polymer-amended tailings solvent recovery unit (TSRU) oil sands tailings
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