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Permanent link (DOI): https://doi.org/10.7939/R3599Z930

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Characterization of silica and dissolved organic matter aggregation in SAGD produced water Open Access

Descriptions

Other title
Subject/Keyword
Humic acids
SAGD produced water
Taguchi
DLS
ANOVA
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Fatema,Jannat
Supervisor and department
Fleck, Brian (Mechanical Engineering)
Examining committee member and department
Kumar,Aloke (Mechanical Engineering)
Zeng,Hongbo (Chemical Engineering)
Maiti,Abhijit (Mechanical Engineering)
Fleck,Brian (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2014-01-03T15:58:56Z
Graduation date
2014-06
Degree
Master of Science
Degree level
Master's
Abstract
Proper understanding of SAGD produced water and boiler blow down (BBD) water in particular is required to propose effective treatment processes for reuse and reduction in the quantity of disposable water. BBD contains high dissolved organic matter (DOM) and total dissolved solid (TDS). This study investigates the interaction of silica and DOM in BBD using different analytical techniques. The roles of different types of organics, salts, and colloids on silica-DOM co-precipitation were studied at different concentrations and pH. In order to study the effects of all factors at three levels and to deter- mine the most influential parameters with a minimum number of experiments Taguchi orthogonal array was employed. Analysis of variance (ANOVA) was performed to evaluate the contribution of each parameter. In the presence of salt, the rate of silica organic co-precipitation varies with the nature of organics. Humic-like fractions of DOM plays a major role in the process of DOM-silica co-precipitation. Light scattering technique applied to examine the aggregation rate at low concentrations of organics and DOM also demonstrates that the presence of organics enhances silica aggregation rate.
Language
English
DOI
doi:10.7939/R3599Z930
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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