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Waste Containment Ponds Are a Major Source of Secondary Organic Aerosol Precursors from Oil Sands Operations
Name
Drollette_OS_Manuscript_clean copy.pdf
Description
Accepted version
Size
987.61 KB
Format
Adobe PDF
Checksum (MD5)
6b224c1c281d30d36a5aa082bb333451
Author(s)
Drollette, Brian D
Gentner, Drew R
Plata, Desiree L
Date Issued
2020
Journal
Environmental Science and Technology
Publisher
American Chemical Society (ACS)
Citation
Drollette, Brian D, Gentner, Drew R and Plata, Desiree L. 2020. "Waste Containment Ponds Are a Major Source of Secondary Organic Aerosol Precursors from Oil Sands Operations." Environmental Science and Technology, 54 (16).
Version
Author's final manuscript
Abstract
Copyright © 2020 American Chemical Society. The surface mining and bitumen extraction of oil sands (OS) generates over one million barrels of heavy oil each day in the Alberta Oil Sands Region of Canada. Recent observations suggest that emissions from OS development contribute to secondary organic aerosol (SOA) formation, but the chemical composition, mass fluxes, and sources of those emissions are poorly delineated. Here, we simulated OS extraction and used comprehensive two-dimensional gas chromatography to quantify and characterize direct air emissions, bitumen froth, residual wastewater, and tailings components, ultimately enabling fate modeling of over 1500 chromatographic features simultaneously. During the non-ice cover season, tailings ponds emissions contributed 15000-72000 metric tonnes of hydrocarbon SOA precursors, translating to 3000-13000 tonnes of SOA, whereas direct emissions during the extraction process itself were notably smaller (960 ± 500 tonnes SOA yr-1). These results suggest that tailings pond waste management practices should be targeted to reduce environmental emissions.
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
10.1021/ACS.EST.0C01735
