Redox separations of plutonium
Conference
·
OSTI ID:370662
- Florida State Univ., Tallahassee, FL (United States)
An understanding of the oxidation state speciation of plutonium in solution is vital to predicting its behavior in ecological systems. The redox chemistry of plutonium involves the III, IV, V, and VI states with two or three states of ten present in equilibrium. Acidic solutions favor the lower oxidation states as Pu(III), and Pu(IV), while in basic media the higher oxidation states as Pu(V)O{sub 2}{sup +} and Pu(VI)O{sub 2}{sup 2+} are stabilized. Hydrolysis, complexation, and sorption can perturb the oxidation state equilibrium of plutonium. Such a diverse redox chemistry allows for the easy purification of plutonium on laboratory and industrial (i.e. PUREX) scales, but complicates separation studies of plutonium speciation in natural waters. Some fundamental aspects of plutonium chemistry are discussed with particular focus on their influence on plutonium oxidation state speciation. The value of using plutonium to teach redox equilibria is also reviewed.
- OSTI ID:
- 370662
- Report Number(s):
- CONF-960376--
- Country of Publication:
- United States
- Language:
- English
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