Format

Send to

Choose Destination
Nature. 2002 Sep 12;419(6903):134.

Nanometre-size products of uranium bioreduction.

Author information

1
Department of Geology and Geophysics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.

Abstract

One strategy that is being pursued to tackle the international problem of actinide contamination of soils, sediments and water is to use microbial activity to 'fix' these radionuclides into an insoluble form that cannot be readily dispersed. Here we show that uraninite (UO(2)) particles formed from uranium in sediments by bacterial reduction are typically less than 2 nanometres across and that the small size has important implications for uraninite reactivity and fate. Because these tiny particles may still be transported in an aqueous environment, precipitation of uranium as insoluble uraninite cannot be presumed to immobilize it.

PMID:
12226656
DOI:
10.1038/419134a
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Nature Publishing Group
Loading ...
Support Center