Aqueous uptake of uranium onto pyrite surfaces; reactivity of fresh versus weathered material

TB Scott, O Riba Tort, GC Allen

Research output: Contribution to journalArticle (Academic Journal)peer-review

72 Citations (Scopus)

Abstract

In order to better understand the interaction between aqueous uranium and pyrite (FeS2) the uptake of uranium onto the surfaces of both weathered and freshly generated pyrite surfaces was examined using batch sorption experiments. Analysis was performed using X-ray photoelectron spectroscopy (XPS). The results clearly indicate that freshly polished pyrite surfaces are efficient scavengers of uranium from solution, while weathered surfaces exhibit only limited uptake. Results also indicate partial reduction of uranium at the pyrite surfaces, with a heterogeneous distribution of U(IV) and U(VI) species.
Translated title of the contributionAqueous uptake of uranium onto pyrite surfaces; reactivity of fresh versus weathered material
Original languageEnglish
Pages (from-to)5044 - 5053
Number of pages10
JournalGeochimica et Cosmochimica Acta
Volume71 (21)
DOIs
Publication statusPublished - Nov 2007

Bibliographical note

Publisher: Elsevier

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