Biogenic uraninite nanoparticles and their importance for uranium remediation

John R. Bargar, Rizlan Bernier-Latmani, Daniel E. Giammar, Bradley Tebo

Research output: Contribution to journalArticle

95 Scopus citations

Abstract

Biogenic uraninite is of interest to geoscientists for its importance to bioremediation strategies, remarkably small particle size, and biological origin. Recent studies have begun to illuminate the chemical/ structural complexities of this important natural nanomaterial. Intriguingly, in spite of its incredibly diminutive size, the molecular-scale structure, energetics, and surface-area-normalized dissolution rates of hydrated biogenic uraninite appear to be similar to those of coarser- particle, abiotic, stoichiometric UO2. These findings have important implications for the role of size as a moderator of nanoparticle aqueous reactivity and for the bioremediation of subsurface U (VI) contamination.

Original languageEnglish (US)
Pages (from-to)407-412
Number of pages6
JournalElements
Volume4
Issue number6
DOIs
Publication statusPublished - Dec 2008

    Fingerprint

Keywords

  • Biogenic uraninite
  • Bioremediation
  • Dissolution
  • EXAFS
  • Microbial uranium reduction
  • Uraninite

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Geochemistry and Petrology

Cite this