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Degradation of Naphthenic Acids in Athabasca Oil Sands Process-Affected Water Using Ozone Open Access


Other title
ozone, oil sands, naphthenic acids, tailings ponds, process-affected water
Type of item
Degree grantor
University of Alberta
Author or creator
Hongjing , Fu
Supervisor and department
Smith, Daniel (Civil and Environmental Engineering)
Galmal El-Din, Mohamed (Civil and Environmental Engineering)
Examining committee member and department
Kang, Seoktae (Civil and Environmental Engineering)
Belosevic, Mike (Biological Sciences)
Department of Civil and Environmental Engineering

Date accepted
Graduation date
Master of Science
Degree level
In order to determine the degradation of Naphthenic Acids (NAs) in oil sands process-affected water (OSPW), a series of semi-batch ozonation experiments have been conducted resulting in a maximum reduction of NAs greater than 99%. Compared to the high NAs removal, the reduction of both COD and DOC was much lower under the same conditions. Following ozone treatments of approx. 80 mg/L, the cBOD5 and cBOD5/COD tripled as compared to original OSPW measurements, suggesting ozone-treated OSPW has a higher biodegradability. The ozone treatments also detoxified the OSPW; with an ozone treatment of approx. 100 mg/L, the treated OSPW showed no toxicity using the Mircotox® bioassay. Additionally, the coke-treated OSPW, treated using a coke/water slurry process, was found to be non-toxic with an ozone treatment of approx. 20 mg/L. The results obtained during this study shows the great potential ozonation may offer as a possible water treatment application for oil sands water management.
License granted by Hongjing Fu ( on 2011-01-28T04:09:26Z (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.
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File title: Alberta contains the second largest proven concentration of oil in the world, the vast majority of which is found in oil sands deposits
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