In Situ Bioremediation of Naphthenic Acids Contaminated Tailing Pond Waters in the Athabasca Oil Sands Region—Demonstrated Field Studies and Plausible Options: A Review

2005 ◽  
Vol 40 (3) ◽  
pp. 685-722 ◽  
Author(s):  
E. K. Quagraine ◽  
H. G. Peterson ◽  
J. V. Headley
Keyword(s):  
Oil Sands ◽  
Field Studies ◽  
Naphthenic Acids ◽  
Tailing Pond ◽  
Athabasca Oil Sands ◽  
In Situ Bioremediation ◽  
Athabasca Oil Sands Region

Characterization of Naphthenic Acids and Other Dissolved Organics in Natural Water from the Athabasca Oil Sands Region, Canada

2017 ◽  
Vol 51 (17) ◽  
pp. 9524-9532 ◽  
Author(s):  
Chenxing Sun ◽  
William Shotyk ◽  
Chad W. Cuss ◽  
Mark W. Donner ◽  
Jon Fennell ◽  
...  
Keyword(s):  
Natural Water ◽  
Oil Sands ◽  
Naphthenic Acids ◽  
Athabasca Oil Sands ◽  
Athabasca Oil Sands Region ◽  
Dissolved Organics

scholarly journals Airborne and ground-based measurements of aerosol optical depth of freshly emitted anthropogenic plumes in the Athabasca Oil Sands Region

2021 ◽  
Vol 21 (13) ◽  
pp. 10671-10687
Author(s):  
Konstantin Baibakov ◽  
Samuel LeBlanc ◽  
Keyvan Ranjbar ◽  
Norman T. O'Neill ◽  
Mengistu Wolde ◽  
...  
Keyword(s):  
Aerosol Optical Depth ◽  
Optical Depth ◽  
Oil Sands ◽  
Dominant Factor ◽  
Aerosol Formation ◽  
Athabasca Oil Sands ◽  
Athabasca Oil Sands Region ◽  
Fine Mode ◽  
Horizontal Inhomogeneity

Abstract. In this work we report the airborne aerosol optical depth (AOD) from measurements within freshly emitted anthropogenic plumes arising from mining and processing operations in the Athabasca Oil Sands Region (AOSR) in the context of ground-based AERONET climatological daily averaged AODs at Fort McMurray (Alberta, Canada). During two flights on 9 and 18 June 2018, the NASA airborne 4STAR (Spectrometers for Sky-Scanning, Sun-Tracking Atmospheric Research) Sun photometer registered high fine-mode (FM, <1 µm) in-plume AODs of up to 0.4 and 0.9, respectively, in the vicinity of the plume source (<20 km). Particle composition shows that the plumes were associated with elevated concentrations of sulfates and ammonium. These high AODs significantly exceed climatological averages for June and were not captured by the nearby AERONET instrument (mean daily AODs of 0.10±0.01 and 0.07±0.02, maximum AOD of 0.12) due possibly to horizontal inhomogeneity of the plumes, plume dilution and winds which in certain cases were carrying the plume away from the ground-based instrument. The average 4STAR out-of-plume (background) AODs deviated only marginally from AERONET daily averaged values. While 4STAR AOD peaks were generally well correlated in time with peaks in the in situ-measured particle concentrations, we show that differences in particle size are the dominant factor in determining the 4STAR-derived AOD. During the two flights of 24 June and 5 July 2018 when plumes likely travelled distances of 60 km or more, the average 4STAR FM AOD increased by 0.01–0.02 over ∼50 km of downwind particle evolution, which was supported by the increases in layer AODs calculated from the in situ extinction measurements. Based on these observations as well as the increases in organic mass, we attribute the observed AOD increase, at least in part, to secondary organic aerosol formation. The in-plume and out-of-plume AODs for this second pair of flights, in contrast to clear differences in in situ optical and other measurements, were practically indistinguishable and compared favourably to AERONET within 0.01–0.02 AOD. This means that AERONET was generally successful in capturing the background AODs, but missed some of the spatially constrained high-AOD plumes with sources as close as 30–50 km, which is important to note since the AERONET measurements are generally thought to be representative of the regional AOD loading. The fact that industrial plumes can be associated with significantly higher AODs in the vicinity of the emission sources than previously reported from AERONET can potentially have an effect on estimating the AOSR radiative impact.

scholarly journals The Effects of Plume Episodes on PAC Profiles in the Athabasca Oil Sands Region

2021 ◽  
pp. 117014
Author(s):  
Narumol Jariyasopit ◽  
Tom Harner ◽  
Cecilia Shin ◽  
Richard Park
Keyword(s):  
Oil Sands ◽  
Athabasca Oil Sands ◽  
Athabasca Oil Sands Region

scholarly journals Quantification of methane sources in the Athabasca Oil Sands Region of Alberta by aircraft mass balance

2018 ◽  
Vol 18 (10) ◽  
pp. 7361-7378 ◽  
Author(s):  
Sabour Baray ◽  
Andrea Darlington ◽  
Mark Gordon ◽  
Katherine L. Hayden ◽  
Amy Leithead ◽  
...  
Keyword(s):  
Mass Balance ◽  
Oil Sands ◽  
Surface Mining ◽  
Open Pit ◽  
Emission Rates ◽  
Athabasca Oil Sands ◽  
Emissions Inventory ◽  
Athabasca Oil Sands Region ◽  
Major Surface ◽  
Tailings Ponds

Abstract. Aircraft-based measurements of methane (CH4) and other air pollutants in the Athabasca Oil Sands Region (AOSR) were made during a summer intensive field campaign between 13 August and 7 September 2013 in support of the Joint Canada–Alberta Implementation Plan for Oil Sands Monitoring. Chemical signatures were used to identify CH4 sources from tailings ponds (BTEX VOCs), open pit surface mines (NOy and rBC) and elevated plumes from bitumen upgrading facilities (SO2 and NOy). Emission rates of CH4 were determined for the five primary surface mining facilities in the region using two mass-balance methods. Emission rates from source categories within each facility were estimated when plumes from the sources were spatially separable. Tailings ponds accounted for 45 % of total CH4 emissions measured from the major surface mining facilities in the region, while emissions from operations in the open pit mines accounted for ∼ 50 %. The average open pit surface mining emission rates ranged from 1.2 to 2.8 t of CH4 h−1 for different facilities in the AOSR. Amongst the 19 tailings ponds, Mildred Lake Settling Basin, the oldest pond in the region, was found to be responsible for the majority of tailings ponds emissions of CH4 (> 70 %). The sum of measured emission rates of CH4 from the five major facilities, 19.2 ± 1.1 t CH4 h−1, was similar to a single mass-balance determination of CH4 from all major sources in the AOSR determined from a single flight downwind of the facilities, 23.7 ± 3.7 t CH4 h−1. The measured hourly CH4 emission rate from all facilities in the AOSR is 48 ± 8 % higher than that extracted for 2013 from the Canadian Greenhouse Gas Reporting Program, a legislated facility-reported emissions inventory, converted to hourly units. The measured emissions correspond to an emissions rate of 0.17 ± 0.01 Tg CH4 yr−1 if the emissions are assumed as temporally constant, which is an uncertain assumption. The emission rates reported here are relevant for the summer season. In the future, effort should be devoted to measurements in different seasons to further our understanding of the seasonal parameters impacting fugitive emissions of CH4 and to allow for better estimates of annual emissions and year-to-year variability.

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