water‐soluble polymers for oil sands tailing treatment: a

Water‐soluble polymers for oil sands tailing treatment: A

Currently there is no mature technology capable of effectively treating oil sands tailings and completely eliminating the use of tailings ponds. Consolidated tailings and paste technology are the most extensively used dewatering methods.

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water‐soluble polymers for oil sands tailing treatment: a

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

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water-soluble polymers for oil sands tailing treatment: a

Water-Soluble Polymers for Oil Sands Tailing Treatment: A

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.

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cheminform abstract: water‐soluble polymers for oil sands

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

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water-soluble polymers for oil sands tailing treatment: a

Water-soluble polymers for oil sands tailing treatment: A

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.

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review of characterization methods for water-soluble

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.

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multifunctional water-soluble polymers for dewatering

Multifunctional Water-Soluble Polymers for Dewatering

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.

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water management in oil sands mining facilities | oil

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.

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dewatering oil sands mature fine tailings (mfts) with poly

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. In this study, we used a surface

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dewatering oil sands mature fine tailings (mfts) with poly

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.

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monitoring polymer flocculation in oil sands tailings: a

Monitoring Polymer Flocculation in Oil Sands Tailings: A

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

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paper: the effect of preconditioning of tailings prior

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,

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current state of fine mineral tailings treatment: a

Current state of fine mineral tailings treatment: A

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).

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the influence of tailings composition on flocculation

The Influence of Tailings Composition on Flocculation

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

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seminar - “flocculation of mature fine tailings: is there

Seminar - “Flocculation of Mature Fine Tailings: Is there

ABSTRACT: Oil sands are a strategic resource for Canada, but despite technological advances in extraction techniques, the treatment of tailing ponds resulting from bitumen extraction is plagued by many environmental challenges.The crucial technical challenge is to separate bitumen from the sand and clay particles, then flocculate or stack the clay particles to release water that can be

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process water treatment in canada’s oil sands industry: ii

Process water treatment in Canada’s oil sands industry: II

Canada’s oil sands industry uses large volumes of freshwater to extract bitumen from surface-mined ore. With oil production expected to increase 3-fold over the next decade, process water treatment has become a critical issue for oil sands operators, both in terms of sustaining bitumen recovery and protecting freshwater resources.

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us20160280572a1 - polymers for flocculation, dewatering

US20160280572A1 - Polymers for flocculation, dewatering

A method of treating a solid particulate suspension, such as fluid fine tailings, to form a flocculated slurry by mixing with the suspension with a polymer having a solubility in water which is temperature responsive, having an upper critical solution temperature between about 0° C. and about 80° C. The polymer may be formed from water-soluble monomer units and monomers units which are

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multifunctional water-soluble polymers for dewatering

Multifunctional Water-Soluble Polymers for Dewatering

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.

Get Price
improving oil sands processability using a temperature

Improving Oil Sands Processability Using a Temperature

A temperature-sensitive polymer, poly(N-isopropylacrylamide), was tested as a process aid to process a low-grade, high-fines oil sand ore. Two sets of bitumen extraction tests were carried out. In test set I, both oil sands slurry conditioning and bitumen flotation were conducted at 23 °C. In test set II, the slurry was conditioned at 23 °C, and, however, the bitumen flotation step was

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study of thermoresponsive hybrid polymer for oil sands

Study of Thermoresponsive Hybrid Polymer for Oil Sands

Many tailings treatment technologies rely on the use of water-soluble polyacrylamides (PAM) to flocculate fine solids. However, PAM-induced flocs are often loosely-structured and retain significant volume of water due to the hydrophilicity of PAM and fine clays in oil sands fine tailings.

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us10513451b2 - treatment of mature fine tailings

US10513451B2 - Treatment of mature fine tailings

A process for drying mature fine tailings is provided. A low molecular weight anionic organic polymer is contacted with a tailings stream to flocculate mature fine tailings and enhance dewatering. The tailings stream can contain, for example, water, sand, silt and fines clays produced from a bitumen extraction process for oil sands ore.

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investigation on the flocculation of oil sands mature fine

Investigation on the flocculation of oil sands mature fine

1. Introduction. Canada has huge oil sands deposits in northern Alberta, which are estimated to be the third largest in the world. Oil sands represent 97% of Canada’s total oil reserves (Olsson, 2012), constituting an important economic benefit, both nationally and globally, that is expected to increase because the global demand for energy is projected to increase by 48% from 2012 to 2040 (U

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quantifying the effect of polyacrylamide dosage, na+

Quantifying the effect of polyacrylamide dosage, Na+

1. Introduction. Tailings are mainly composed of sand, clays, fine silt, water, and residual hydrocarbons. They are the by-product of the Clark Hot Water extraction process, used to separate oil from sand and clay in oil sands exploration.

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polymers for flocculation, dewatering and consolidation of

POLYMERS FOR FLOCCULATION, DEWATERING AND CONSOLIDATION OF

CROSS REFERENCE TO RELATED APPLICATIONS. This application claims the priority benefit of U.S. Provisional Patent Application No. 62/139,134 filed on Mar. 27, 2015 entitled “Polymers for Flocculation, Dewatering and Consolidation of Oil Sands Fluid Fine Tailings, Mine Tailings and Solid Particulate Suspensions”, the contents of which are incorporated herein by reference.

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dewatering oil sands mature fine tailings (mfts) with poly

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. In this study, we used a surface

Get Price
us10513451b2 - treatment of mature fine tailings

US10513451B2 - Treatment of mature fine tailings

A process for drying mature fine tailings is provided. A low molecular weight anionic organic polymer is contacted with a tailings stream to flocculate mature fine tailings and enhance dewatering. The tailings stream can contain, for example, water, sand, silt and fines clays produced from a bitumen extraction process for oil sands ore.

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amylopectin-graft-polyacrylamide for the flocculation

Amylopectin-graft-polyacrylamide for the flocculation

Oil sands tailings are composed of water, solids, and chemicals that may be harmful if released in the environment. The solids in tailings consist of sand, silt, and negatively-charged clays (mainly kaolinite and illite). Alberta’s oil sands tailings inventory exceeds 1.2 trillion liters.

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a model study on water soluble polymeric nanofibers

A Model Study on Water Soluble Polymeric Nanofibers

Recently, rapid flocculation and dewatering of oil sands tailings using polymeric nanofibers has been considered. Water-soluble polymers, combined with flocculation techniques, have been used in the industry to efficiently release entrapped water by bridging small particles to create large, heavier flocs, which can then settle.

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probing adsorption of polyacrylamide-based polymers

Probing Adsorption of Polyacrylamide-Based Polymers

The Influence of Tailings Composition on Flocculation. The Canadian Journal of Chemical Engineering 2015, 93 (9) , 1514-1523. DOI: 10.1002/cjce.22241. Diógenes R. L. Vedoy, João B. P. Soares. Water-soluble polymers for oil sands tailing treatment: A Review.

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ca2767510c - fluid tailings flocculation and dewatering

CA2767510C - Fluid tailings flocculation and dewatering

CA2767510C CA2767510A CA2767510A CA2767510C CA 2767510 C CA2767510 C CA 2767510C CA 2767510 A CA2767510 A CA 2767510A CA 2767510 A CA2767510 A CA 2767510A CA 2767510 C CA2767510 C CA 2767510C Authority CA Canada Prior art keywords method tailings ppmw tailings stream treated Prior art date 2012-02-15 Legal status (The legal status is an assumption and is not a legal conclusion.

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profiling oil sands mixtures from industrial developments

Profiling Oil Sands Mixtures from Industrial Developments

The objective of this study was to identify chemical components that could distinguish chemical mixtures in oil sands process-affected water (OSPW) that had potentially migrated to groundwater in the oil sands development area of northern Alberta, Canada. In the first part of the study, OSPW samples from two different tailings ponds and a broad range of natural groundwater samples were

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investigation on the flocculation of oil sands mature fine

Investigation on the flocculation of oil sands mature fine

1. Introduction. Canada has huge oil sands deposits in northern Alberta, which are estimated to be the third largest in the world. Oil sands represent 97% of Canada’s total oil reserves (Olsson, 2012), constituting an important economic benefit, both nationally and globally, that is expected to increase because the global demand for energy is projected to increase by 48% from 2012 to 2040 (U

Get Price