ERA

Download the full-sized PDF of Role of Carbon Dioxide in Densification of Oil Sands TailingsDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R3P036

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

Role of Carbon Dioxide in Densification of Oil Sands Tailings Open Access

Descriptions

Other title
Subject/Keyword
oil sands tailings
carbon dioxide
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Zhu, Ren
Supervisor and department
Xu, Zhenghe (Chemical and Materials Engineering)
Liu, Qingxia (Chemical and Materials Engineering)
Examining committee member and department
Liu, Qingxia (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
2011-09-27T20:08:43Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
Carbon dioxide (CO2) was shown as a promising alternative for oil sands tailings treatment with economical and environmental benefits. This thesis aims to understand the role of CO2 addition in settling and densification of oil sands tailings. In this study, CO2 was pressurized into two industrial whole tailings. The optimal initial settling rate, supernatant clarity and solids content of sediment were achieved at CO2 partial pressure of about 100 kPa. Increasing the processing temperature improved the effects of CO2 on the settling of tailings. The improvement on settling and densification of tailings by CO2 was mainly attributed to pH reduction, which led to a decrease in the value of zeta potential of the fines. On the other hand, CO2 bubbles formed by dissolved gas under super-saturation pressure caused a less clear supernatant by disturbing the formed sediments. The limit of CO2 sequestration by oil sands tailings was experimentally evaluated.
Language
English
DOI
doi:10.7939/R3P036
Rights
License granted by Ren Zhu (rzhu2@ualberta.ca) on 2011-09-26T18:38:03Z (GMT): 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 the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein 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
2014-05-01T04:17:04.681+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: 735057
Last modified: 2015:10:12 21:21:35-06:00
Filename: Thesis_Robin_20110926.pdf
Original checksum: e2ca096b27a6619a6f115a60d7ea7534
Well formed: false
Valid: false
Status message: Invalid page tree node offset=601949
Status message: Unexpected error in findFonts java.lang.ClassCastException: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject cannot be cast to edu.harvard.hul.ois.jhove.module.pdf.PdfDictionary offset=2552
Status message: Invalid Annotation list offset=695016
Status message: Outlines contain recursive references.
File title: University of Alberta
Activity of users you follow
User Activity Date