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Permanent link (DOI): https://doi.org/10.7939/R32N4ZQ6F

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Understanding and Developing New Methods for Treating Oil Sands Tailings Open Access

Descriptions

Other title
Subject/Keyword
Polymer
Oil sands Tailings
Fine tailings
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Kaura, Aditya
Supervisor and department
Xu, Zhenghe (Chemical and Materials Engineering)
Examining committee member and department
Trivedi, Japan (Civil and Environmental Engineering)
Gupta, Rajender (Chemical and Materials Engineering)
Xu, Zhenghe (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2014-08-11T10:05:24Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
Management of oil sands tailings from bitumen extraction operations remains a challenge for mineable oil sands producers. Promoting fine solids settling in tailings ponds is key to treating oil sands tailings. Present study explores two methods of tailings treatment – ATA process and polymer assisted CT process. ATA (Anchor-Tether-Activator) process involves anchor of particles usually coarse solids with tethering polymer and adding an activator polymer to tailings slurry. MF1011 was used as activator polymer, while in-house synthesized Al-PAM and commercially available pDADMAC were used as tethering polymers. Both Al-PAM and pDADMAC were able to produce non-segregated tailings, but the initial settling rate was higher with the use of Al-PAM while the turbidity of supernatant was lowest with the use of pDADMAC. A novel method for treating oil sands tailings using only coarse sand and tethered polymer pDADMAC was developed. This new process is capable of producing clear water for extraction and sediment bed of high yield stresses at significantly reduced consumption of polymers.
Language
English
DOI
doi:10.7939/R32N4ZQ6F
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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