|Title:||Characterization of boiler blowdown water from steam-assisted gravity drainage and silica-organic coprecipitation during acidification and ultrafiltration|
Guha Thakurta 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|
|Author Scopus IDs:||23994098600|
|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: email@example.com|
|Appears in Collections:||Journal Publications [PE]|
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.