This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1016/j.gca.2014.02.044 in citations.
A thermodynamic adsorption/entrapment model for selenium(IV) coprecipitation with calcite
A thermodynamic adsorption/entrapment model for selenium(IV) coprecipitation with calcite
Selenium is an environmentally relevant trace element, while the radioisotope 79Se is of particular concern in the context of nuclear waste disposal safety. Oxidized selenium species are relatively soluble and show only weak adsorption at common mineral surfaces. However, a possible sorption mechani...
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Personal Name(s): | Heberling, Frank (Corresponding Author) |
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Vinograd, Victor / Polly, Robert / Gale, Julian D. / Heck, Stephanie / Rothe, Jörg / Bosbach, Dirk / Geckeis, Horst / Winkler, Björn | |
Contributing Institute: |
Nukleare Entsorgung; IEK-6 |
Published in: | Geochimica et cosmochimica acta, 134 (2014) S. 16 - 38 |
Imprint: |
New York, NY [u.a.]
Elsevier
2014
|
DOI: |
10.1016/j.gca.2014.02.044 |
Document Type: |
Journal Article |
Research Program: |
Safety Research for Nuclear Waste Disposal |
Publikationsportal JuSER |
Selenium is an environmentally relevant trace element, while the radioisotope 79Se is of particular concern in the context of nuclear waste disposal safety. Oxidized selenium species are relatively soluble and show only weak adsorption at common mineral surfaces. However, a possible sorption mechanism for selenium in the geosphere is the structural incorporation of selenium(IV) (selenite, SeO32−) into calcite (CaCO3).In this study we investigate the interactions between selenite and calcite by a series of experimental and computational methods with the aim to quantify selenite incorporation into calcite at standard conditions. We further seek to describe the thermodynamics of selenite-doped calcite, and selenite coprecipitation with calcite. |