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- 18Oil sands tailings
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Anaerobic biodegradation of hydrocarbons in different oil sands tailings ponds: key microbial players and main activation pathway of hydrocarbon biodegradationDownload
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...
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...
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...
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...
Effect of Diluent Levels on Greenhouse Gases and Reduced Sulfur Compound Emissions from Oil Sands TailingsDownload
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...
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...
Metagenomics of hydrocarbon resource environments indicates aerobic taxa and genes to be unexpectedly common
An, D., Oldenburg, T., Klassen, J.,, Agrawal, A., Saidi-Mehrabad, A., Wong, M., Budwill, K., Wolbring, G., Larter, S., Sipahimalani, P., Rochman, F. F., Jack, T. R., Hallam, S. J., Brown, D., Voordouw, G., Leopatra, V., Caffrey, S. M., Page, A. P., Gieg, L. M., Dunfield, P. F., He, Z., Wilson, S., Song, Y. C., Konwar, K. M.,, Foght, J., Nesbo, C. L., Dong, X., Hanson, N. W., Ramos-Padron, E., Kuatsjah, E., Sensen, C. W., Soh, J., Li, C.
Methanogenesis in oil sands tailings: an analysis of the microbial community involved and its effects on tailings densificationDownload
Densification of tailings slurries to mature fine tailings (MFT) is important in the oil sands industry for tailings inventory reduction, pore water recovery and tailings reclamation. The cause of methane release from the tailings pond of Shell Albian Sands (Albian) and the effects this process...