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Permanent link (DOI): https://doi.org/10.7939/R39C8G

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Polymer Aids for Settling and Filtration of Oil Sands Tailings Open Access

Descriptions

Other title
Subject/Keyword
Tailings, filtration, settling, polymer, flocculation, Al-PAM
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Wang, Xiaoyan
Supervisor and department
Xu, Zhenghe (Chemical and Materials Engineering)
Masliyah, Jacob (Chemical and Materials Engineering)
Examining committee member and department
Masliyah, Jacob (Chemical and Materials Engineering)
Xu, Zhenghe (Chemical and Materials Engineering)
Liu, Yang (Civil and Environmental Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2009-12-11T16:10:21Z
Graduation date
2010-06
Degree
Master of Science
Degree level
Master's
Abstract
Commercial Magnafloc 1011and in-house synthesized Al-PAM were used as flocculants for model tailings, laboratory extraction tailings and tailings from paraffin froth treatment unit. The polymers were tested for their flocculation ability in settling and filtration. For model tailings, both polymers showed excellent ability to improve the settling and filtration performance. Magnafloc 1011 is found sensitive to overdosing, but Al-PAM is not sensitive to the dosage within the tested range. For the laboratory extraction tailings, both polymers showed excellent ability to enhance settling. Al-PAM performed very well as a filtration aid. The moisture of the cake obtained from tailings derived from a low fines ore was 6.6 ± 1.2wt% and that from a high fines ore was 16.9 ± 0.8wt%. However, Magnafloc 1011 was found not effective as a filtration aid. For the froth treatment tailings, Al-PAM improved the settling and filterability dramatically. Although the moisture of the cake obtained was 42.5wt%, no free water is seen visually in the cake. The solid cake is self-supportive and remains intact. This class of Al-PAM polymers can provide an alternative approach for oil sands tailings disposal that can potentially eliminate tailings ponds.
Language
English
DOI
doi:10.7939/R39C8G
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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