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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14691
Title: Dissolved organic matter in steam assisted gravity drainage boiler blow-down water
Authors: Guha Thakurta S.
Maiti, Abhijit
Pernitsky D.J.
Bhattacharjee S.
Published in: Energy and Fuels
Abstract: Steam assisted gravity drainage (SAGD) boiler blow-down (BBD) water contains high concentrations of dissolved organic matter (DOM) and total dissolved solids (TDS). A detailed understanding of the BBD chemistry, particularly the DOM composition, is important for better management and recycle of this water. In this study, we fractionated the dissolved organic matter in the BBD using DAX-8, Dowex, and Duolite resins into hydrophobic and hydrophilic fractions of acid, base, and neutral compounds. Additionally, the DOM was fractionated on the basis of size by filtering the BBD through a series of membranes with progressively tighter molecular weight cutoffs of 10, 3, and 0.5 kDa. Fluorescence excitation-emission matrix spectroscopy (EEMs), specific UV absorbance (SUVA), and FTIR were used to characterize the water samples and the different fractions. The ion exchange fractionation revealed that the DOM contained a high percentage of hydrophobic acids (39%) and hydrophilic neutrals (28.5%). The different ion exchange fractions had distinct fluorescence excitation-emission signatures. The permeate samples from the membrane fractionation, on the other hand, did not reveal any significant difference in the fluorescence EEM spectra, indicating that the hydrophilic and hydrophobic constituents of the DOM could not be separated on the basis of pore size by these membranes. The SAGD boiler blow-down water was found to be significantly concentrated in DOM compared to oil sands mining process affected water. © 2013 American Chemical Society.
Citation: Energy and Fuels (2013), 27(7): 3883-3890
URI: https://doi.org/10.1021/ef4002154
http://repository.iitr.ac.in/handle/123456789/14691
Issue Date: 2013
ISSN: 8870624
Author Scopus IDs: 55364757700
23994098600
6507807277
7102305872
Author Affiliations: Guha Thakurta, S., Department of Mechanical Engineering, University of Alberta, Edmonton T6G 2G8, Canada
Maiti, A., Department of Mechanical Engineering, University of Alberta, Edmonton T6G 2G8, Canada
Pernitsky, D.J., Suncor Energy Inc., 150 Sixth Avenue SW, Calgary, AB T2P 3E3, Canada
Bhattacharjee, S., Department of Mechanical Engineering, University of Alberta, Edmonton T6G 2G8, Canada
Corresponding Author: Bhattacharjee, S.; Department of Mechanical Engineering, University of Alberta, Edmonton T6G 2G8, Canada; email: subir.b@ualberta.ca
Appears in Collections:Journal Publications [PE]

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