Reductive immobilization of 79Se by iron canister under simulated repository environment
| Autor: | Anders Puranen, André M. Scheidegger, J. Devoy, R. Gens, Paul Wersin, Daqing Cui, Olivier X. Leupin, Kastriot Spahiu |
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| Přispěvatelé: | Department of Chemistry, School of Chemical Science and Engineering, KTH Royal Institute of Technology, Laboratoire d'Expérimentation Environnement et Chimie, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Institut Paul Scherrer (IPS), NAGRA (NAGRA), NAGRA, ONDRAF/NIRAS, Svensk Kärnbränslehantering AB (SKB), Studsvik Nuclear AB, Department of Physical, Inorganic and Structural Chemistry (Arrhenius Laboratory), Stockholm University |
| Rok vydání: | 2009 |
| Předmět: |
selenate
surface property Absorption spectroscopy X ray diffraction Scanning electron microscope Health Toxicology and Mutagenesis 0207 environmental engineering chemistry.chemical_element reduction 02 engineering and technology precipitation 010501 environmental sciences Mass spectrometry 01 natural sciences Selenate Analytical Chemistry Corrosion chemical environment symbols.namesake chemistry.chemical_compound iron 550 Earth sciences & geology [CHIM]Chemical Sciences Raman spectrometry Radiology Nuclear Medicine and imaging selenium 020701 environmental engineering Spectroscopy 0105 earth and related environmental sciences X-ray absorption spectroscopy corrosion chemical interaction article Public Health Environmental and Occupational Health simulation anaerobic metabolism Pollution Nuclear Energy and Engineering chemistry 13. Climate action immobilization symbols selenite Raman spectroscopy scanning electron microscopy Selenium Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry Journal of Radioanalytical and Nuclear Chemistry, 2009, 282 (2), pp.349-354. ⟨10.1007/s10967-009-0328-8⟩ Cui, D.; Puranen, A.; Devoy, J.; Scheidegger, A.; Leupin, O.X.; Wersin, Paul; Gens, R.; Spahiu, K. (2009). Reductive immobilization of 79Se by iron canister under simulated repository environment. Journal of Radioanalytical and Nuclear Chemistry, 282(2), pp. 349-354. Springer 10.1007/s10967-009-0328-8 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/s10967-009-0328-8 |
| Popis: | To understand the fate of 79Se in a repository-like environment, the interactions between iron canister surface with dissolved selenite (SeO3 2−) and selenate (SeO4 2−) in anaerobic solutions have been investigated. Se(IV) immobilization on iron surface was observed to be about 100 times faster than that of Se(VI) at same conditions. An iron surface coated with a FeCO3 layer corrosion product is more reactive than a polished iron to immobilize Se(IV) and Se(VI). The reacted iron surfaces were analysed by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS), X-ray diffraction (XRD), Raman spectrometry and micro-X-ray Absorption Spectroscopy (XAS). The result show that Se(IV) and Se(VI) were reduced and precipitated. The dominating phase was found to be FeSe2. |
| Databáze: | OpenAIRE |
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