ChemInform Abstract: Water‐Soluble Polymers for Oil Sands
Dep. Chem. Mater. Eng., Univ. Alberta, Edmonton, Alberta T6G 2G6, Can. Search for more papers by this author
Water-soluble polymers for oil sands tailing treatment: A Review. Abstract Efficient dewatering of oil sands tailings is imperative to reduce the environmental footprint of oil sands operators. Currently there is no mature technology capable of effectively treating oil sands tailings and completely eliminating the use of tailings ponds.
Water‐soluble polymers for oil sands tailing treatment: A
Water‐soluble polymers for oil sands tailing treatment: A Review Diógenes R. L. Vedoy Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 2V4 Canada
Water-soluble polymers have been used in many applications in the oil sand and heavy oil industries, including drilling, enhanced oil recovery, tailings treatment, and water treatment.
Review of characterization methods for water-soluble
Water-soluble polymers have been used in many applications in the oil sand and heavy oil industries, including drilling, enhanced oil recovery, tailings treatment, and water treatment. Because they are water soluble, residual polymer can remain with the aqueous phase, potentially leading to environmental impacts. Investigating the environmental fate of these water-soluble polymers is particularly important as they may be toxic to aquatic biota or terrestrial animal life.
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.
Water Management in Oil Sands Mining Facilities | Oil
The oil sands to water ratio is typically about 1-to-1 (or 50% water in the average slurry stream). A typical oil sands mining facility requires 9 barrels of water per barrel of bitumen produced. However, most of this water is recycled internally, with fresh water requirements closer to 3 barrels per barrel of bitumen.
Copolymers of acrylamide and cationic comonomers such as diallyldimethylammonium chloride can effectively dewater solid suspensions containing negatively charged fine particles. A good example of such suspensions is oil sands mature fine tailings (MFTs). However, little is known about the impact of the microstructure of copolymers in dewatering performance. In this study, we used a surface
Dewatering Oil Sands Mature Fine Tailings (MFTs) with Poly
Copolymers of acrylamide and cationic comonomers such as diallyldimethylammonium chloride can effectively dewater solid suspensions containing negatively charged fine particles. A good example of such suspensions is oil sands mature fine tailings (MFTs). However, little is known about the impact of the microstructure of copolymers in dewatering performance.
Over the last 5 years, the group designed, synthesized, and tested several novel polymer flocculants tailored for oil sands tailings treatment. This feature article communicates recent
Paper: The effect of preconditioning of tailings prior
Vedoy, DRL & Soares, JBP 2015, ‘Water-soluble polymers for oil sands tailing treatment: a review’, The Canadian Journal of Chemical Engineering, vol. 93, pp. 888–904. Walker, S 2015, ‘Tailings management strategies to meet today's demands’, Engineering & Mining Journal, vol. 216, no. 11,
However, the coarse fraction of oil sands fluid fine tailings is mostly quartz, K-feldspar, and bitumen–clay aggregates. Solids in both coal and oil sands tailings are entrained in slightly alkaline process waters, with pH ranging between 7.5–8.5 and 7.7–8.8, respectively (de Kretser et al., 1997, Allen, 2008).
- What is thermal stability of water soluble polyacrylamide (PAM) and partially hydrolyzed polymers?
- Thermal stability of water-soluble polyacrylamide (PAM) and partially hydrolyzed polyacrylamide (HPAM) polymers under various solution conditions have been studied utilizing Quantum Mechanics Density Functional Theory (DFT) computational modeling method.
- Does hydrochloric acid degrade acrylamide based polymers?
- Of the studied solutions, AM-AMPS exhibited the best viscosity maintenance in 10 wt% HCl. The changes in polymer molecular weight indicate that the high concentrations of hydrochloric acid gradually degraded the four acrylamide-based polymers, demonstrating that the modification will have significant effect on their acid resistance.
- What causes emulsion in modified acrylamide-based polymers?
- Emulsion occurs as a result of the product generated by the degradation product and the surface active, as shown in Fig. 4 h. 4. Conclusions In this work, the stability of different modified acrylamide-based polymers in high concentrations of hydrochloric acid was comprehensively investigated.
- What causes acrylamide based polymers to degrade?
- Degradation situation It is generally known that acrylamide based polymers will degrade by oxidative, thermal and photodynamic effects. Additionally, the stability of divalent ions will reduce in aqueous solutions , , , , , , , .
