Uranium
Book
·
OSTI ID:894852
The two important oxidation states for uranium in natural environments are 4+ and 6+. Compounds containing quadrivalent uranium are insoluble in mildly acidic to alkaline conditions; whereas, those containing the linearly uranyl moiety (O=U=O)2+, are highly soluble and mobile. In solution, UO22+ forms soluble complexes with carbonate, oxalate, and hydroxide; UO22+ is also highly susceptible to adsorption either by organic matter, Fe oxyhydroxides, or precipitation with various anions, such as silicate, vanadate, arsenate, and phosphate. In ground water systems U(VI) is reduced to U(IV) if an effective reductant is present, such as H2S. Other reducing agents may be fossil plants, methane, and transported humic material. Uranium minerals display an extraordinary range structural and chemical variability, resulting from the different chemical conditions under which U minerals are formed.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 894852
- Report Number(s):
- PNNL-SA-43501
- Country of Publication:
- United States
- Language:
- English
Similar Records
Assembly of Uranyl Peroxides from Ball Milled Solids
Fixation and Transport of Uranium by Humic Substances; FIXATION ET TRANSPORT DE L'URANIUM PAR LES SUBSTANCES HUMIQUES
Role of pH changes in primary uraninite mineralization
Journal Article
·
Tue Jul 12 20:00:00 EDT 2022
· Inorganic Chemistry
·
OSTI ID:1877856
Fixation and Transport of Uranium by Humic Substances; FIXATION ET TRANSPORT DE L'URANIUM PAR LES SUBSTANCES HUMIQUES
Thesis/Dissertation
·
Sun Dec 31 23:00:00 EST 1961
·
OSTI ID:4707521
Role of pH changes in primary uraninite mineralization
Journal Article
·
Fri Oct 01 00:00:00 EDT 1982
· Int. Geol. Rev.; (United States)
·
OSTI ID:6463514