Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates.
Increasing use of rare earth elements (REEs) in modern technologies and existing or expected imbalances between demand and supply have led many countries, including Canada, to consider the exploitation of their own REEs primary sources. The objective of this study is a thorough characterization of t...
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Online Access: | https://espace.inrs.ca/id/eprint/11412/ https://doi.org/10.1016/j.scitotenv.2020.139225 |
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ftinrsquebec:oai:espace.inrs.ca:11412 2023-05-15T15:00:02+02:00 Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. Costis, Sophie Coudert, Lucie Mueller, Kristin K. Cecchi, Emmanuelle Neculita, Carmen Mihaela Blais, Jean-François 2020 https://espace.inrs.ca/id/eprint/11412/ https://doi.org/10.1016/j.scitotenv.2020.139225 unknown Costis, Sophie, Coudert, Lucie, Mueller, Kristin K., Cecchi, Emmanuelle, Neculita, Carmen Mihaela et Blais, Jean-François orcid:0000-0003-3087-4318 (2020). Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. Science of The Total Environment , vol. 732 . p. 139225. DOI:10.1016/j.scitotenv.2020.139225 <https://doi.org/10.1016/j.scitotenv.2020.139225>. doi:10.1016/j.scitotenv.2020.139225 rare earth elements weathering cells flotation tailings mine drainage leaching potential Article Évalué par les pairs 2020 ftinrsquebec https://doi.org/10.1016/j.scitotenv.2020.139225 2023-02-10T11:46:40Z Increasing use of rare earth elements (REEs) in modern technologies and existing or expected imbalances between demand and supply have led many countries, including Canada, to consider the exploitation of their own REEs primary sources. The objective of this study is a thorough characterization of the flotation tailings generated during the pre-concentration of REEs from a carbonatite type deposit with the aim of predicting their geochemical behaviour over time. These tailings were characterized based on physicochemical and mineralogical properties. Weathering cells were also used to assess the impact of temperature (3 and 19 °C) on the geochemical behaviour of the tailings exposed to a sub-arctic climate. Because the tailings consisted mainly of carbonates (97.4%) and had very high neutralization potential (859 kg CaCO₃/t) relative to their acidity potential (3.94 kg CaCO₃/t), no acid mine drainage (AMD) is anticipated. Compared to regional environmental standards and guidelines, the concentrations of Cd (0.20 μg/l), Zn (17 μg/l), and Pb (close to 4 μg/l) in leachates obtained during kinetic testing may be considered as potentially problematic. Finally, the results of the weathering cells at 3 °C indicate that the exposure to low temperatures may increase the concentrations of elements leached from the tailings. This study confirms that low temperatures and freeze-thaw events, which occur readily in a sub-arctic climate, may impact the geochemical behaviour of tailings produced from the extraction of REEs from carbonatite type deposit. Article in Journal/Newspaper Arctic Institut national de la recherche scientifique, Québec: Espace INRS Arctic Canada Science of The Total Environment 732 139225 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
unknown |
topic |
rare earth elements weathering cells flotation tailings mine drainage leaching potential |
spellingShingle |
rare earth elements weathering cells flotation tailings mine drainage leaching potential Costis, Sophie Coudert, Lucie Mueller, Kristin K. Cecchi, Emmanuelle Neculita, Carmen Mihaela Blais, Jean-François Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. |
topic_facet |
rare earth elements weathering cells flotation tailings mine drainage leaching potential |
description |
Increasing use of rare earth elements (REEs) in modern technologies and existing or expected imbalances between demand and supply have led many countries, including Canada, to consider the exploitation of their own REEs primary sources. The objective of this study is a thorough characterization of the flotation tailings generated during the pre-concentration of REEs from a carbonatite type deposit with the aim of predicting their geochemical behaviour over time. These tailings were characterized based on physicochemical and mineralogical properties. Weathering cells were also used to assess the impact of temperature (3 and 19 °C) on the geochemical behaviour of the tailings exposed to a sub-arctic climate. Because the tailings consisted mainly of carbonates (97.4%) and had very high neutralization potential (859 kg CaCO₃/t) relative to their acidity potential (3.94 kg CaCO₃/t), no acid mine drainage (AMD) is anticipated. Compared to regional environmental standards and guidelines, the concentrations of Cd (0.20 μg/l), Zn (17 μg/l), and Pb (close to 4 μg/l) in leachates obtained during kinetic testing may be considered as potentially problematic. Finally, the results of the weathering cells at 3 °C indicate that the exposure to low temperatures may increase the concentrations of elements leached from the tailings. This study confirms that low temperatures and freeze-thaw events, which occur readily in a sub-arctic climate, may impact the geochemical behaviour of tailings produced from the extraction of REEs from carbonatite type deposit. |
format |
Article in Journal/Newspaper |
author |
Costis, Sophie Coudert, Lucie Mueller, Kristin K. Cecchi, Emmanuelle Neculita, Carmen Mihaela Blais, Jean-François |
author_facet |
Costis, Sophie Coudert, Lucie Mueller, Kristin K. Cecchi, Emmanuelle Neculita, Carmen Mihaela Blais, Jean-François |
author_sort |
Costis, Sophie |
title |
Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. |
title_short |
Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. |
title_full |
Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. |
title_fullStr |
Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. |
title_full_unstemmed |
Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. |
title_sort |
assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. |
publishDate |
2020 |
url |
https://espace.inrs.ca/id/eprint/11412/ https://doi.org/10.1016/j.scitotenv.2020.139225 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Costis, Sophie, Coudert, Lucie, Mueller, Kristin K., Cecchi, Emmanuelle, Neculita, Carmen Mihaela et Blais, Jean-François orcid:0000-0003-3087-4318 (2020). Assessment of the leaching potential of flotation tailings from rare earth mineral extraction in cold climates. Science of The Total Environment , vol. 732 . p. 139225. DOI:10.1016/j.scitotenv.2020.139225 <https://doi.org/10.1016/j.scitotenv.2020.139225>. doi:10.1016/j.scitotenv.2020.139225 |
op_doi |
https://doi.org/10.1016/j.scitotenv.2020.139225 |
container_title |
Science of The Total Environment |
container_volume |
732 |
container_start_page |
139225 |
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1766332132730339328 |