ERA

Download the full-sized PDF of Thermogravimetric Analysis of Solvent Interaction with Model TSRU Tailings ComponentsDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R3FH83

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Graduate Studies and Research, Faculty of

Collections

This file is in the following collections:

Theses and Dissertations

Thermogravimetric Analysis of Solvent Interaction with Model TSRU Tailings Components Open Access

Descriptions

Other title
Subject/Keyword
asphaltenes
solvent recovery
paraffinic solvent
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Ansari, Nesma Nasir
Supervisor and department
Xu, Zhenghe (Chemical and Materials Engineering)
Liu, Qingxia (Chemical and Materials Engineering)
Examining committee member and department
Xu, Zhenghe (Chemical and Materials Engineering)
Liu, Qingxia (Chemical and Materials Engineering)
Trivedi, Japan (Civil and Environmental Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2013-01-28T15:48:51Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
Solvents are ubiquitously used in oil sands extraction industry to enhance the separation of bitumen froth. With developing new technologies such as non-aqueous bitumen extraction, the need to track solvent interactions with oil sands components throughout the extraction process and to identify potential causes of solvent loss is becoming increasingly important. While the use of solvents offers substantial processing gains, the loss of solvents to waste streams is not only expensive but also poses environmental concerns. Tailings solvent recovery units (TSRU) are used to recover solvent from the froth treatment tailings stream. With less than 100% solvent recovered, further research is required to better understand the unrecovered solvent. In the current study, the interaction of solvent with model tailings components is studied using thermal gravimetric analysis (TGA). The studies on solvent interaction with clays, asphaltenes and mixed systems confirm that operating temperatures higher than 100 oC are required to recover all the solvent. While unassociated or surface-wet solvent is easily removed, a small fraction of the solvent (paraffinic - 60% n-pentane, 40% i-pentane by mass) can be considered to interact with clays and strongly interact with asphaltenes. Approximately ~10% of the solvent interacts with asphaltenes and less than ~1% with ‘clean’ clays.
Language
English
DOI
doi:10.7939/R3FH83
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.
Citation for previous publication

File Details

Date Uploaded
Date Modified
2014-05-01T01:48:23.034+00:00
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 2452884
Last modified: 2015:10:12 17:24:53-06:00
Filename: Ansari_Nesma_Spring2013.pdf
Original checksum: 46444ad5470976c58d90e311f62a9287
Well formed: true
Valid: true
File author: Nesma
Page count: 111
File language: en-US
Activity of users you follow
User Activity Date