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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14662
Title: Characterization of boiler blowdown water from steam-assisted gravity drainage and silica-organic coprecipitation during acidification and ultrafiltration
Authors: Maiti, Abhijit
Sadrezadeh M.
Guha Thakurta S.
Pernitsky D.J.
Bhattacharjee S.
Published in: Energy and Fuels
Abstract: In thermally enhanced oil recovery operations, particularly in steam-assisted gravity drainage (SAGD), boiler blowdown (BBD) containing high concentrations of dissolved organic matter (DOM), dissolved silica, and total dissolved solids (TDS) is generated. To develop efficient tools for managing this blowdown, a detailed understanding of its chemistry is required. In this study, BBD was evaporated to yield ∼66% condensate and ∼33% concentrate blowdown (CBD). Detailed characterization of the BBD and CBD water was conducted. The effect of acidification was also studied. The acidification coprecipitates the silica and DOM, with over 90% of the silica and over 40% of the DOM precipitating at pH 4. Ultrafiltration treatment was also examined, and a major fraction of the silica and DOM in the CBD was found to foul a 100 kDa ultrafiltration membrane in the pH range of 7.5 to 9. The analysis revealed that the dominant fouling mechanism was cake filtration, indicating the formation of a silica-DOM precipitate layer on the membrane surface. These studies can provide insight regarding management options for SAGD disposal water. © 2012 American Chemical Society.
Citation: Energy and Fuels (2012), 26(9): 5604-5612
URI: https://doi.org/10.1021/ef300865e
http://repository.iitr.ac.in/handle/123456789/14662
Issue Date: 2012
ISSN: 8870624
Author Scopus IDs: 23994098600
55364486200
55364757700
6507807277
7102305872
Author Affiliations: Maiti, A., Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 2G8, Canada
Sadrezadeh, M., Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 2G8, Canada
Guha Thakurta, S., Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 2G8, Canada
Pernitsky, D.J., Suncor Energy, Incorporated, 150 6th Avenue Southwest, Calgary, AB T2P 3E3, Canada
Bhattacharjee, S., Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 2G8, Canada
Corresponding Author: Bhattacharjee, S.; Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 2G8, Canada; email: subir.b@ualberta.ca
Appears in Collections:Journal Publications [PE]

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