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The Source, Mobilit...
The Source, Mobility and Fate of Bismuth (Bi) in Legacy Mine Waste, Yxsjöberg, Sweden
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- Hällström, Lina P. B. (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Gustafsson, Jon Petter (författare)
- Department of Soil and Environment, Swedish University of Agricultural Sciences, Box 7014, 750 07 Uppsala, Sweden
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(creator_code:org_t)
- Mdpi, 2024
- 2024
- Engelska.
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Ingår i: Minerals. - : Mdpi. - 2075-163X. ; 14:2
- Relaterad länk:
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https://doi.org/10.3...
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visa fler...
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https://ltu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.3...
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visa färre...
Abstract
Ämnesord
Stäng
- The usage of bismuth (Bi), a critical and strategic raw material, has increased in the last 10 years. At present, the knowledge of Bi geochemistry is too limited to develop accurate mine waste and water management strategies to prevent environmental impact. Therefore, its geochemistry was studied in historical tailings in Yxsjoberg, Sweden. Intact tailings cores and shore samples were geochemically and mineralogically analyzed. Groundwater was sampled between 2016 and 2021 and analyzed for 71 elements and (SO4, F, Cl). The results were correlated with metals and dissolved organic matter (DOC), which have been previously published. The total concentrations, sequential extraction and scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS) mapping indicated that Bi had been mobilized from the primary mineral bismuthinite (Bi2S3). In the oxidized tailings from both the cores and shore, Bi was hypothesized to have adsorbed to iron (Fe) (hydr)oxides, which prohibited high concentrations of Bi leaching into the groundwater and surface water. Dissolved Bi in groundwater was significantly correlated with DOC. In surface water, dissolved Bi was transported more than 5 km from the tailings. This study indicates that Bi can become mobile from legacy mine waste due to the oxidation of bismuthinite and either be scavenged by adsorption of Fe (hydr)oxides or kept mobile in groundwater and surface water due to complexation with DOC.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- bismuth (Bi) mobility
- DOC complexation
- Fe (hydr)oxides
- bismuthinite
- historical tailings
- Applied Geochemistry
- Tillämpad geokemi
- Centrumbildning - Centrum för avancerad gruvteknik och metallurgi (CAMM)
- Centre - Centre for Advanced Mining & Metallurgy (CAMM)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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