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Reductive immobiliz...
Reductive immobilization of Se-79 by iron canister under simulated repository environment
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- Cui, Daqing (författare)
- Stockholms universitet,Avdelningen för miljökemi
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- Puranen, Anders (författare)
- KTH,Kemi
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Devoy, J. (författare)
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Scheidegger, A. (författare)
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Leupin, O. X. (författare)
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Wersin, P. (författare)
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Gens, R. (författare)
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Spahiu, K. (författare)
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(creator_code:org_t)
- 2009-08-12
- 2009
- Engelska.
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Ingår i: Journal of Radioanalytical and Nuclear Chemistry. - : Springer Science and Business Media LLC. - 0236-5731 .- 1588-2780. ; 282:2, s. 349-354
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- To understand the fate of Se-79 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..
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Reductive immobilization
- Selenium
- Iron canister
- Nuclear waste
- Repository
- Environmental chemistry
- Miljökemi
- Chemistry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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