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Permanent link (DOI): https://doi.org/10.7939/R3KD9P

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Effect of Sonication on the Particle Size of Kaolinite Clays Open Access

Descriptions

Other title
Subject/Keyword
Effect of sonication
Clay Particle Size
Kaolinite Particle Size
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Marefatallah, Maedeh
Supervisor and department
Sanders, Sean (Chemical and Materials Engineering)
Examining committee member and department
Liu, Qi (Chemical and Materials Engineering)
Zeng, Hongbo (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2013-01-03T11:36:39Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
In oil sands mining operations, water-based mixtures containing coarse sand grains and fine mineral solids (including clays) are ubiquitous. The clay fraction can have a detrimental effect on the separation of bitumen from the oil sand matrix, on the hydrotransport pipelines, and on water recycle. As such, the particle size and concentration of the colloidal clay particles and the rheology of aqueous suspension of these particles must be monitored. The Particle Size Distribution (PSD), along with pH and ion concentration in the continuous phase, govern particle-particle and particle-continuous phase interactions. These interactions in turn dictate the overall behavior of mixtures containing clays. Therefore, any factor that can bias or alter the clay PSD of the mineral solids must be investigated. For example these mixtures are typically exposed to sonication before particle size analyses are conducted. In this study, the effect of sonication on the kaolinite clay PSD - as an analog of the clays found in the oil sands - was examined. The size measurements were carried out using a Flow Particle Image Analyzer (Sysmex FPIA-3000). This study demonstrates that sonication results in a reduction of the number of large particles and also an increase in the proportion of the smallest particles. Results of experiments conducted on slurries having different pH, electrolyte concentrations and solids concentrations showed that these factors, along with sonication time and power, have a significant effect on the extent of the particle size reduction.
Language
English
DOI
doi:10.7939/R3KD9P
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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