Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System
Selenium can be highly toxic in excess for both animals and humans. However, since its mobile forms can be easily adsorbed with ferric minerals, its mobility in the natural oxic environment is generally not an issue. Still, the removal and immobilization of the long-lived radioactive isotope <sup...
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MDPI AG
2022-12-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/24/1/315 |
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| author | Michaela Matulová Eva Duborská Peter Matúš Martin Urík |
| author_facet | Michaela Matulová Eva Duborská Peter Matúš Martin Urík |
| author_sort | Michaela Matulová |
| collection | DOAJ |
| description | Selenium can be highly toxic in excess for both animals and humans. However, since its mobile forms can be easily adsorbed with ferric minerals, its mobility in the natural oxic environment is generally not an issue. Still, the removal and immobilization of the long-lived radioactive isotope <sup>79</sup>Se from the contaminated anoxic waters is currently a significant concern. <sup>79</sup>Se can be accessible in the case of radionuclidesˈ leaching from radioactive waste disposals, where anoxic conditions prevail and where ferrous ions and Fe(II)-bearing minerals predominate after corrosion processes (e.g., magnetite). Therefore, reductive and adsorptive immobilizations by Fe(II)-bearing minerals are the primary mechanisms for removing redox-sensitive selenium. Even though the information on the sorptive interactions of selenium and Fe(II)-bearing minerals seems to be well documented, this review focuses specifically on the state of the available information on the effects of the redox properties of Fe(II)-bearing solid phases (e.g., ferrous oxides, hydroxides, sulfides, and carbonates) on selenium speciation via redox transformation and co-occurring coprecipitation. |
| first_indexed | 2024-03-11T10:00:02Z |
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| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-11T10:00:02Z |
| publishDate | 2022-12-01 |
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| series | International Journal of Molecular Sciences |
| spelling | doaj.art-9d2fa15020294858be540ed65c37071c2023-11-16T15:31:35ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-12-0124131510.3390/ijms24010315Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal SystemMichaela Matulová0Eva Duborská1Peter Matúš2Martin Urík3Radioactive Waste Repository Authority (SÚRAO), Dlážděná 6, 11000 Prague 1, Czech RepublicInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaSelenium can be highly toxic in excess for both animals and humans. However, since its mobile forms can be easily adsorbed with ferric minerals, its mobility in the natural oxic environment is generally not an issue. Still, the removal and immobilization of the long-lived radioactive isotope <sup>79</sup>Se from the contaminated anoxic waters is currently a significant concern. <sup>79</sup>Se can be accessible in the case of radionuclidesˈ leaching from radioactive waste disposals, where anoxic conditions prevail and where ferrous ions and Fe(II)-bearing minerals predominate after corrosion processes (e.g., magnetite). Therefore, reductive and adsorptive immobilizations by Fe(II)-bearing minerals are the primary mechanisms for removing redox-sensitive selenium. Even though the information on the sorptive interactions of selenium and Fe(II)-bearing minerals seems to be well documented, this review focuses specifically on the state of the available information on the effects of the redox properties of Fe(II)-bearing solid phases (e.g., ferrous oxides, hydroxides, sulfides, and carbonates) on selenium speciation via redox transformation and co-occurring coprecipitation.https://www.mdpi.com/1422-0067/24/1/315seleniumferrous mineralsnuclear wastesorptionreduction processes |
| spellingShingle | Michaela Matulová Eva Duborská Peter Matúš Martin Urík Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System International Journal of Molecular Sciences selenium ferrous minerals nuclear waste sorption reduction processes |
| title | Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System |
| title_full | Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System |
| title_fullStr | Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System |
| title_full_unstemmed | Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System |
| title_short | Solid–Water Interface Interaction of Selenium with Fe(II)-Bearing Minerals and Aqueous Fe(II) and S(-II) Ions in the Near-Field of the Radioactive Waste Disposal System |
| title_sort | solid water interface interaction of selenium with fe ii bearing minerals and aqueous fe ii and s ii ions in the near field of the radioactive waste disposal system |
| topic | selenium ferrous minerals nuclear waste sorption reduction processes |
| url | https://www.mdpi.com/1422-0067/24/1/315 |
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