dual polymer flocculants for mature fine tailings dewatering

Dual polymer flocculants for mature fine tailings …

A cationic polymer, polydiallyldimethylammonium chloride (polyDADMAC), and an anionic (hydrolyzed) polyacrylamide (PAM), were used in sequence to treat the mature fine tailings (MFT) from the oil sa…,Dual polymer flocculants for mature fine tailings … ,A cationic polymer, polydiallyldimethylammonium chloride (polyDADMAC), and an anionic (hydrolyzed) polyacrylamide (PAM), were used in sequence to treat the mature fine tailings (MFT) from the oil sands operations in Alberta, Canada.,Dual polymer flocculants for mature fine tailings … ,Zhu et . (2017) reported about dual polymer flocculation for dewatering oil sands tailings. The structure of untreated tailings was reported to be relatively dense with small pores size 5-5.5 µm,…

Dual polymer flocculants for mature fine tailings …

Dual polymer flocculants for mature fine tailings dewatering Buy Article: … chloride (polyDADMAC), and an anionic (hydrolyzed) polyacrylamide (PAM), were used in sequence to treat the mature fine tailings (MFT) from the oil sands operations in Alberta, Canada.,Dual polymer flocculants for mature fine tailings dewatering ,Dual polymer flocculants for mature fine tailings dewatering ABSTRACT A cationic polymer, polydiallyldimethylammonium chloride (polyDADMAC), and an anionic (hydrolyzed) polyacrylamide (PAM), were used in sequence to treat the mature fine tailings (MFT) from the oil sands operations in Alberta, Canada.,Dual polymer flocculants for mature fine tailings … ,A cationic polymer, polydiallyldimethylammonium chloride (polyDADMAC), and an anionic (hydrolyzed) polyacrylamide (PAM), were used in sequence to treat the mature fine tailings (MFT) from the oil sands operations in Alberta, Canada. Capillary suction time (CST), specific resistance to filtration (SRF), and filter cake solid content were measured, and cryogenic scanning electron microscopic …

dual polymer flocculants for mature fine tailings …

Dual polymer flocculants for mature fine tailings dewatering. Ying Zhu. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T,Dewatering of Oil Sands Mature Fine Tailings by Dual … ,As a result, flocculation by dual polymers can produce more-condensed flocs, higher settling rate, and higher solids content in the sediment, than by single polymers. 18,21, 23, 24 The solids…,Pressure Filtration of Oil Sands Mature Fine Tailings ,Dewatering of the oil sands mature fine tailings (MFT) is studied through pressure filtration following treatment by dual polymer flocculants. Polymer pairs consisting of anionic polyacrylamide (A3335) and cationic polyDADMAC (Alcomer 7115), and A3335 and non-ionic polyethylene oxide (PEO) are tested.

Cationic and Anionic Dual Polymer Pairs for Mature Fine …

DOI: 10.7939/R31V5BN48 Corpus ID: 103884467. Cationic and Anionic Dual Polymer Pairs for Mature Fine Tailings Flocculation and Dewatering @inproceedings{Zhu2016CationicAA, title={Cationic and Anionic Dual Polymer Pairs for Mature Fine Tailings Flocculation and Dewatering}, author={Ying Zhu}, year={2016} },Cationic And Anionic Dual Polymer Pairs For Mature Fine … ,The accumulation of oil sands tailings poses serious environmental issues in Alberta, Canada. In the tailings ponds, the fine clays and residual bitumen form the so-called mature fine tailings (MFT) which contain 30~40 wt% fine solid particles primarily below 44 μm in size, 1~3 wt% residual bitumen with the balance water.,Synergy between Dual Polymers and Sand-to-Fines Ratio for … ,Synergy between Dual Polymers and Sand-to-Fines Ratio for Enhanced Flocculation of Oil Sand Mature Fine Tailings Author: Zhou, Joe, Li, Haihong, Zhang, Xuehua Source: Energy & fuels 2021 v.35 no.10 pp. 8884-8894 ISSN: 1520-5029 Subject: composite polymers, dewatering, electrostatic interactions, energy, flocculants, flocculation, oil sands …

Pressure Filtration of Oil Sands Mature Fine Tailings

Dewatering of the oil sands mature fine tailings (MFT) is studied through pressure filtration following treatment by dual polymer flocculants. Polymer pairs consisting of anionic polyacrylamide (A3335) and cationic polyDADMAC (Alcomer 7115), and A3335 and non-ionic polyethylene oxide (PEO) are tested.,Flocculation and dewatering of kaolinite suspensions and … ,M. H. Haroon, X. Tan and Q. Liu, “Flocculation and Dewatering of Clay Suspension Using Dual Polymer Flocculants”. Chapter 5 of this thesis is being prepared for submission to the journal Energy & Fuels, as M.H. Haroon, X. Tan and Q. Liu, “Floc Size Growth and Water Release During Treatment of Mature Fine Tailings Using Dual Polymers”.,Role of Mixing Energy in the Flocculation of Mature Fine … ,High-molecular-weight polymer flocculants are used for accelerated dewatering of mature fine tailings (MFTs) to reclaim the land occupied by containment ponds. Two anionic polymers were used to flocculate an MFT sample containing 98% by weight of fines smaller than 44 μm in diameter, with 85% of this fraction being clay minerals.

Role of Mixing Energy in the Flocculation of Mature Fine …

High-molecular-weight polymer flocculants are used for accelerated dewatering of mature fine tailings (MFTs) to reclaim the land occupied by containment ponds. Two anionic polymers were used to flo…,Optimal floc structure for effective dewatering of polymer … ,Synthetic polymeric flocculants such as anionic polyacrylamides are widely used for dewatering mature fine tailings (MFT) generated from oil sands mining operations. Many studies have investigated the effects of polymer properties on dewatering efficiency.,Starch-based Polymers as Flocculants of Oil Sands Mature … ,Show simple item record. Starch-based Polymers as Flocculants of Oil Sands Mature Fine Tailings and for Extraction of Bitumen from Oil Sands

Dewatering of Oil Sands Mature Fine Tailings by Dual …

Dewatering of Oil Sands Mature Fine Tailings by Dual Polymer Flocculation and Pressure Plate Filtration Author: Loerke, Rosalynn, Tan, Xiaoli, Liu, Qi Source: Energy & fuels 2017 v.31 no.7 pp. 6986-6995 ISSN: 1520-5029 Subject:,[PDF] Flocculation And Dewatering Of Kaolinite Suspensions … ,flocculation and dewatering of kaolinite suspensions and oil sands mature fine tailings using dual polymers . Download or Read online Flocculation And Dewatering Of Kaolinite Suspensions And Oil Sands Mature Fine Tailings Using Dual Polymers full HQ books.,Cationic And Anionic Dual Polymer Pairs For Mature Fine … ,The accumulation of oil sands tailings poses serious environmental issues in Alberta, Canada. In the tailings ponds, the fine clays and residual bitumen form the so-called mature fine tailings (MFT) which contain 30~40 wt% fine solid particles primarily below 44 μm in size, 1~3 wt% residual bitumen with the balance water.

Synergy between Dual Polymers and Sand-to-Fines Ratio …

The current challenges in dewatering oil sand mature fine tailings (MFTs) by flocculation using a single flocculant include the requirement of very high doses and high cost, inefficient flocculation, and low content of solids in sediment. The obtained …,Dewatering Wet Tailings Generated From Oil Sands … – NRCan ,Cryo-SEM image of mature fine tailings treated by dual polymer flocculants, showing more porous structure. Text version.,Role of Mixing Energy in the Flocculation of Mature Fine … ,High-molecular-weight polymer flocculants are used for accelerated dewatering of mature fine tailings (MFTs) to reclaim the land occupied by containment ponds. Two anionic polymers were used to flo…

Fines-Dominated Tailings Dewatering

Fines-Dominated Tailings Dewatering Background Fine dominated tailings, defined as over 50 wt% of <44 µm size fraction in tailings, are challenging to manage. Fine tailings usually contain significant amount of clays, which make them difficult to dewater and consolidate due to low permeability.,Dewatering Oil Sands Tailings with Degradable Polymer … ,We synthesized hydrolytically degradable cationic polymers by micellar radical polymerization of a short-chain polyester macromonomer, polycaprolactone choline iodide ester methacrylate (PCL 2 ChMA) with two polyester units, and used them to flocculate oil sands mature fine tailings (MFT). We evaluated the flocculation performance of the homopolymer and copolymers with 30 mol % acrylamide (AM …,Cellulose Nanocrystals‐Based Polyacrylamide as … ,Consolidation and Hydraulic Conductivity of Oil Sand Mature Fine Tailings Dewatered by Using Super Absorbent Polymer Journal of Geotechnical and Geoenvironmental Engineering 10.1061/(asce)gt.1943-5606.0001101

[PDF] Flocculation And Dewatering Of Kaolinite Suspensions …

flocculation and dewatering of kaolinite suspensions and oil sands mature fine tailings using dual polymers . Download or Read online Flocculation And Dewatering Of Kaolinite Suspensions And Oil Sands Mature Fine Tailings Using Dual Polymers full HQ books.,Dewatering of Oil Sands Mature Fine Tailings by Dual … ,Dewatering of Oil Sands Mature Fine Tailings by Dual Polymer Flocculation and Pressure Plate Filtration Author: Loerke, Rosalynn, Tan, Xiaoli, Liu, Qi Source: Energy & fuels 2017 v.31 no.7 pp. 6986-6995 ISSN: 1520-5029 Subject:,… and dewatering performance of dual polymers for treating … ,Previous research has demonstrated that the addition of dual polymers is more efficient than using a single polymer to flocculate the fine tailings particles. Different from studies that took sophisticated procedures to assess the flocculation and dewatering efficiency of dual polymers, readily available and simple but effective experiments were conducted in this work.

Synergy between Dual Polymers and Sand-to-Fines Ratio …

The current challenges in dewatering oil sand mature fine tailings (MFTs) by flocculation using a single flocculant include the requirement of very high doses and high cost, inefficient flocculation, and low content of solids in sediment. The obtained …,Challenges in developing polymer flocculants to improve … ,Of particular interest are polymer flocculants that have been used in the oil sands industry to treat FFT and mature fine tailings (MFT), a topic covered in recent reviews (Vedoy and Soares 2015; Vajihinejad et al. 2019).,POLYMERS FOR FLOCCULATION, DEWATERING AND CONSOLIDATION OF … ,The polymer may be formed from water-soluble monomer units and monomers units which are insoluble or less-soluble in water than the water-soluble monomers. When used with mature fine tailings (MFT), reclaimable MFT may be formed by dewatering the treated slurry.

Dewatering Oil Sands Tailings with Degradable Polymer …

We synthesized hydrolytically degradable cationic polymers by micellar radical polymerization of a short-chain polyester macromonomer, polycaprolactone choline iodide ester methacrylate (PCL2ChMA) with two polyester units, and used them to flocculate oil sands mature fine tailings (MFT). We evaluated the flocculation performance of the homopolymer and copolymers with 30 mol % acrylamide (AM …,Investigating the effects of different cationic charge … ,Two polymer flocculants were used, FLOPAM 4650 and FLOPAM 4800. FLOPAM 4650 has a medium cationicity of 55%, and FLOPAM 4800 a high cationicity of 80%.,Role of Preconditioning Cationic Zetag Flocculant in … ,The ongoing generation of mature fine tailings (MFT) or fluid fine tailings (FFT) from surface mining activities of the oil sands industry in Canada has been a contentious issue for many years. In the absence of large-scale processing facilities, many far-reaching consequences from extensive stockpiling of FFT will plague the industry for many years to come.