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Geochemical conditions influence vanadium, nickel, and molybdenum release from oil sands fluid petroleum coke

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dc.contributor.authorAbdolahnezhad, Mojtaba
dc.contributor.authorLindsay, Matthew B. J.
dc.date.accessioned2022-10-24T19:48:03Z
dc.date.available2022-10-24T19:48:03Z
dc.date.issued2022-01-07
dc.description© 2022 Elsevier B.V. All rights reserved.en_US
dc.description.abstractPetroleum coke is a potential source of vanadium (V), nickel (Ni), and molybdenum (Mo) to water resources in Athabasca Oil Sands Region (AOSR) of northern Alberta, Canada. Large stockpiles of this bitumen upgrading byproduct will be incorporated into mine closure landscapes and understanding the processes and conditions controlling the release and transport of these transition metals is critical for effective reclamation. We performed a series of laboratory column experiments to quantify V, Ni, and Mo release from fluid petroleum coke receiving meteoric water (MW), oil sands process-affected water (OSPW), and acid rock drainage (ARD) influents. We found that influent water chemistry strongly influences metal release, with variations among metals largely attributed to pH-dependent aqueous speciation and surface reactions. Cumulative V, Ni, and Mo mass release was greatest for columns receiving the low-pH ARD influent. Additionally, cumulative V and Mo mass release were greater in columns receiving OSPW compared to MW influent, whereas cumulative Ni mass release was greater in columns receiving MW compared to OSPW influent. Nevertheless, only a small proportion of total V, Ni, and Mo was released during the experiments, with the majority occurring during the first 10 pore volumes (PVs). This study offers insight into geochemical controls on V, Ni, and Mo release from fluid petroleum coke that supports ongoing development of oil sands mine reclamation strategies for landscapes that contain petroleum coke.en_US
dc.description.sponsorshipFunding was provided by Syncrude Canada Ltd. and the Natural Sciences and Engineering Research Council of Canada through the Collaborative Research and Development grants program (Grant No. CRDPJ 476388) and the Industrial Research Chairs Program (Grant No. IRCPJ 428588–11).en_US
dc.description.versionPeer Revieweden_US
dc.identifier.citationAbdolahnezhad, M. & Lindsay, M.B.J. (2022). Geochemical conditions influence vanadium, nickel, and molybdenum release from oil sands fluid petroleum coke. Journal of Contaminant Hydrology, 245: 103955–103955. https://doi.org/10.1016/j.jconhyd.2022.103955en_US
dc.identifier.doi10.1016/j.jconhyd.2022.103955
dc.identifier.urihttps://hdl.handle.net/10388/14264
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rightsAttribution-NonCommercial-NoDerivs 2.5 Canada*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/ca/*
dc.subjectoil sandsen_US
dc.subjectpetroleum cokeen_US
dc.subjectvanadiumen_US
dc.subjectnickelen_US
dc.subjectmolybdenumen_US
dc.subjectreclamationen_US
dc.titleGeochemical conditions influence vanadium, nickel, and molybdenum release from oil sands fluid petroleum cokeen_US
dc.typeArticleen_US

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