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URN: urn:nbn:de:swb:90-286961

Structural Incorporation of Selenium into Pyrite and Mackinawite

Diener, Alexander

Selenium has a radiotoxic potential as 79Se radionuclide if discharged from a high-level nuclear waste repository into the biosphere. We performed three different syntheses of selenium doted pyrite and examined the amount of incorporated Se as well as the structural bonding. The incorporated amount of Se is very high (>98%). The structural substitution of Se by S occurs only for high supersaturated solutions. Under anoxic and acidic conditions, the incorporation of Se(0) is more likely.

Zugehörige Institution(en) am KIT Institut für Mineralogie und Geochemie (IMG)
Publikationstyp Hochschulschrift
Jahr 2012
Sprache Englisch
Identifikator KITopen ID: 1000028696
Verlag Karlsruhe
Abschlussart Dissertation
Fakultät Fakultät für Bauingenieur-, Geo- und Umweltwissenschaften (BGU)
Institut Institut für Mineralogie und Geochemie (IMG)
Prüfungsdaten 06.06.2012
Referent/Betreuer Prof. T. Neumann
Schlagworte Incorporation, Solid Solution, Selenium, Pyrite, XAFS
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