| Titre | SOURCES: waterborne contamination in the oil sands region / Contamination par transport aqueux dans la région des sables bitumineux |
| Télécharger | Téléchargement (publication entière) |
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| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Gammon, P |
| Source | Public presentations of May 8th, 2018: Environmental Geoscience Program, current status of research projects, May 2018; par Jacob, N; Kao, H ; Galloway, J; Parsons, M; White, D; Larmagnat, S; Rivard, C; Gammom, P; Savard, M M; Commission géologique du Canada, Présentation scientifique 88, 2018 p. 108-124, https://doi.org/10.4095/308301  Accès ouvert |
| Année | 2018 |
| Éditeur | Ressources naturelles Canada |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/308301 |
| Media | en ligne; numérique |
| Référence reliée | Cette publication est contenue dans Public
presentations of May 8th, 2018: Environmental Geoscience Program, current status of research projects, May 2018 |
| Référence reliée | Cette publication est reliée à SOURCES: a
geochemical map of an oil sands plume - initial results |
| Formats | pdf |
| Province | Alberta |
| SNRC | 73M/13; 73M/14; 73M/15; 73M/16; 74D; 74E; 74L/01; 74L/02; 74L/03; 74L/04; 74L/05; 74L/06; 74L/07; 74L/08; 83P/14; 83P/15; 83P/16; 84A/01; 84A/02; 84A/03; 84A/06; 84A/07; 84A/08; 84A/09; 84A/10; 84A/11;
84A/14; 84A/15; 84A/16; 84H/01; 84H/02; 84H/03; 84H/06; 84H/07; 84H/08; 84H/09; 84H/10; 84H/11; 84H/14; 84H/15; 84H/16; 84I/01; 84I/02; 84I/03; 84I/06; 84I/07; 84I/08 |
| Région | Rivière Athabasca; Fort McKay; Fort McMurray; Muskeg River |
| Lat/Long OENS | -113.5000 -110.0000 58.5000 55.7500 |
| Sujets | etudes de l'environnement; effets sur l'environnement; substances polluantes; métaux; régions émettrices; établissement de modèles; modèles; milieu hydrologique; analyses géochimiques; interprétations
géochimiques; analyses hydrauliques; etudes isotopiques; chlorure; matières organiques; écosystèmes; terres humides; biodégradation; attenuation; concentration; géochimie de l'eau; géochimie des eaux souterraines; eaux de surface; exploitation
minière; sables bitumineux; résidus; analyses des résidus; ressources pétrolières; hydrocarbures; distribution des éléments; bassins versants; regimes d'écoulement; Formation de Mcmurray ; Évaluation des risques; géologie de l'environnement;
combustibles fossiles; hydrogéologie; géochimie |
| Illustrations | cartes de localisation; cartes géolscientiques généralisées; graphiques; photographies; organigrammes; diagrammes schématiques; diagrammes |
| Programme | Géosciences environnementales Gestion du programme |
| Diffusé | 2018 06 27; 2018 07 04 |
| Résumé | (disponible en anglais seulement)
The aim of the Sources Project is to quantify the environmental risks associated with the large extractive Athabasca oil sands industry, including the
development of methods to apportion emissions to their original source. To accomplish either of these tasks for waterborne emissions requires knowing two principle characteristics: the flux (amount) of the emissions and the reactions those emissions
undergo within the receiving environment. A Reactive Transport Model (RTM) defines both of these through coupled hydrologic and geochemical models. An RTM is under development for a wetland test site that is down hydraulic gradient from a large,
long?lived oil sands tailings pond (TP). Waterborne emissions enter the test site from the western edge and then flow southward along a preferred conglomeratic subsurface conduit. From the conduit emissions spread both laterally and rise to the
surface then spread laterally into wetland surface environments. The identification and apportionment of these emissions indicates that multiple metals and isotopic signatures identify the extent of the emissions. However, chloride is the traditional
ion used to identify emissions in oil sands monitoring, but it fails to distinguish emissions sources in the test area due to the plethora of potential saline inputs. The geochemical model indicates metal constituents undergo sorption and attenuation
along the flow path, with organometallic complexes playing an important but previously unrecognized role. Fluxes will be calculated once the hydraulic model has completed numerical verification. The organic constituents within emissions, primarily
napthanic acids (NAs), are commonly regarded as posing the greatest environmental risk from waterborne emissions. However, defining their geochemical behaviour in environmental systems remains problematic. To address this issue an experiment was
performed to see if biodegradation was attenuating NAs. Biotraps were installed with an isotopically labelled adamantine structured NA. Extracted phospholipids from the microbes that populated the biotraps demonstrated strong evidence for
methanotrophic metabolic pathways, with no evidence the microbiome were biodegrading the NA. This suggests that these adamantine-structured Nas would persist within the Athabasca environment. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Le programme de géosciences environnementales (PGE) permet par l'entremise des projets de recherche des scientifiques de la Commission
géologique du Canada de faire avancer les connaissances en lien avec le développement des ressources naturelles du Canada. Les avancées scientifiques présentées lors de cette rencontre annuelle du PGE sont à la base d'une gestion responsable des
ressources par le secteur des ressources naturelles. L'ensemble des recherches contribuent également à la mise en place de réglementations servant à la protection des canadiens et de leur environnement. |
| GEOSCAN ID | 308301 |
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