Abstract
Until the recent years, plutonium dioxide was known to be among the metallic oxides the most difficult to dissolve. From thermodynamic calculations it can be predicted that PuO{sub 2} will dissolve under oxidizing conditions. This can be achieved using Ag(II) species possibly regenerated by electrochemical means. The mechanism of such a process has been elucidated using carbon paste electrochemistry and {sup 18}O labelling. These studies demonstrate that the chemical reaction limiting the overall proces is located on the surface of the solid PuO{sub 2}, and that the first step consists in the oxidation of the plutonium into Pu(V) species. Applications of the dissolution process of PuO{sub 2} by electrogenerated Ag(II) were growing in the recent years in FRANCE. These applications developed often in collaboration with SGN and COGEMA, concern the treatment of: out of specifications PuO{sub 2}, incineration ashes, wastes produced during MOX fuel fabrication, and during the dismantling of old nuclear facilities. A general overview of these different applications is given.
Madic, C;
Lecomte, M;
Bourges, J;
Koehly, G;
[1]
Moulin, J P
[2]
- CEA Centre d`Etudes de la Vallee du Rhone, 30 - Marcoule (FR). Dept. des Procedes de Retraitement
- Societe Generale pour les Techniques Nouvelles (SGN), 78 - Saint-Quentin-en-Yvelines (FR)
Citation Formats
Madic, C, Lecomte, M, Bourges, J, Koehly, G, and Moulin, J P.
Mechanism of the rapid dissolution of PuO{sub 2} under oxidizing conditions and applications.
France: N. p.,
1991.
Web.
Madic, C, Lecomte, M, Bourges, J, Koehly, G, & Moulin, J P.
Mechanism of the rapid dissolution of PuO{sub 2} under oxidizing conditions and applications.
France.
Madic, C, Lecomte, M, Bourges, J, Koehly, G, and Moulin, J P.
1991.
"Mechanism of the rapid dissolution of PuO{sub 2} under oxidizing conditions and applications."
France.
@misc{etde_10116268,
title = {Mechanism of the rapid dissolution of PuO{sub 2} under oxidizing conditions and applications}
author = {Madic, C, Lecomte, M, Bourges, J, Koehly, G, and Moulin, J P}
abstractNote = {Until the recent years, plutonium dioxide was known to be among the metallic oxides the most difficult to dissolve. From thermodynamic calculations it can be predicted that PuO{sub 2} will dissolve under oxidizing conditions. This can be achieved using Ag(II) species possibly regenerated by electrochemical means. The mechanism of such a process has been elucidated using carbon paste electrochemistry and {sup 18}O labelling. These studies demonstrate that the chemical reaction limiting the overall proces is located on the surface of the solid PuO{sub 2}, and that the first step consists in the oxidation of the plutonium into Pu(V) species. Applications of the dissolution process of PuO{sub 2} by electrogenerated Ag(II) were growing in the recent years in FRANCE. These applications developed often in collaboration with SGN and COGEMA, concern the treatment of: out of specifications PuO{sub 2}, incineration ashes, wastes produced during MOX fuel fabrication, and during the dismantling of old nuclear facilities. A general overview of these different applications is given.}
place = {France}
year = {1991}
month = {Dec}
}
title = {Mechanism of the rapid dissolution of PuO{sub 2} under oxidizing conditions and applications}
author = {Madic, C, Lecomte, M, Bourges, J, Koehly, G, and Moulin, J P}
abstractNote = {Until the recent years, plutonium dioxide was known to be among the metallic oxides the most difficult to dissolve. From thermodynamic calculations it can be predicted that PuO{sub 2} will dissolve under oxidizing conditions. This can be achieved using Ag(II) species possibly regenerated by electrochemical means. The mechanism of such a process has been elucidated using carbon paste electrochemistry and {sup 18}O labelling. These studies demonstrate that the chemical reaction limiting the overall proces is located on the surface of the solid PuO{sub 2}, and that the first step consists in the oxidation of the plutonium into Pu(V) species. Applications of the dissolution process of PuO{sub 2} by electrogenerated Ag(II) were growing in the recent years in FRANCE. These applications developed often in collaboration with SGN and COGEMA, concern the treatment of: out of specifications PuO{sub 2}, incineration ashes, wastes produced during MOX fuel fabrication, and during the dismantling of old nuclear facilities. A general overview of these different applications is given.}
place = {France}
year = {1991}
month = {Dec}
}