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Permanent link (DOI): https://doi.org/10.7939/R3CH3K

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Study of the Rag Layer: Characterization of Solids Open Access

Descriptions

Other title
Subject/Keyword
Froth Treatment
Wettability
XRD
Siderite
Film flotation
Hydrophobicity
Hydrocyclone
Rag layer
Pyrite
FTIR
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Madjlessikupai, Morvarid (April)
Supervisor and department
Dr. Masliyah, Jacob (Chemical and Materials Engineering)
Dr. Xu, Zhenghe (Chemical and Materials Engineering)
Examining committee member and department
Dr. Masliyah, Jacob (Chemical and Materials Engineering)
Dr. Xu, Zhenghe (Chemical and Materials Engineering)
Dr. Leung, Juliana (Civil and Environmental Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2012-06-21T10:10:00Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
During separation of emulsified water from oil, a viscous intermediate layer builds up between water and oil phases. This layer which is referred to as rag layer disrupts emulsion destabilization and water removal. The present research is intended to better understand the formation of a rag layer and its properties, so that rag layer formation can be prevented. Two industrial froth samples are considered: one readily forms a rag layer and the other does not. Characterization of emulsion and contained solids is completed to elucidate the key properties that result in rag layer formation. Key differences between the solids that formed and did not form rag layer were identified as: (i) organic contaminates of rag-forming-solids contain more aromatic compounds as compared with those of the non-rag-forming solids; and (ii) rag-forming solids are more hydrophobic. Moreover, mineralogy analysis of these two solids showed that rag-forming-solids contain a considerable amount of iron-based minerals, such as siderite and pyrite. Such research has provides a better understanding of these complicated, troublesome systems.
Language
English
DOI
doi:10.7939/R3CH3K
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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