Abstract
Partitioning of high level liquid wastes coming from nuclear fuel reprocessing by the PUREX process, consists in the elimination of minor actinides (Np, Am, and traces of Pu and U). Among the possible processes, the selective extraction of actinides with oxidation states higher than three is studied. First part of this work deals with a preliminary step; the elimination of the ruthenium from fission products solutions using the electrovolatilization of the RuO4 compound. The second part of this work concerns the complexation and oxidation reactions of the elements U, Np, Pu and Am in presence of a compound belonging to the insaturated polyanions family: the potassium phosphotungstate. For actinide ions with oxidation state (IV) complexed with phosphotungstate anion the extraction mechanism by dioctylamine was studied and the use of a chromatographic extraction technic permitted successful separations between tetravalents actinides and trivalents actinides. Finally, in accordance with the obtained results, the basis of a separation scheme for the management of fission products solutions is proposed.
Citation Formats
Adnet, J M.
Selective extraction of actinides from high level liquid wastes. Study of the possibilities offered by the Redox properties of actinides; Extraction selective des actinides des effluents de haute activite. Etude des possibilites offertes par les proprietes Redox des actinides.
France: N. p.,
1991.
Web.
Adnet, J M.
Selective extraction of actinides from high level liquid wastes. Study of the possibilities offered by the Redox properties of actinides; Extraction selective des actinides des effluents de haute activite. Etude des possibilites offertes par les proprietes Redox des actinides.
France.
Adnet, J M.
1991.
"Selective extraction of actinides from high level liquid wastes. Study of the possibilities offered by the Redox properties of actinides; Extraction selective des actinides des effluents de haute activite. Etude des possibilites offertes par les proprietes Redox des actinides."
France.
@misc{etde_10129814,
title = {Selective extraction of actinides from high level liquid wastes. Study of the possibilities offered by the Redox properties of actinides; Extraction selective des actinides des effluents de haute activite. Etude des possibilites offertes par les proprietes Redox des actinides}
author = {Adnet, J M}
abstractNote = {Partitioning of high level liquid wastes coming from nuclear fuel reprocessing by the PUREX process, consists in the elimination of minor actinides (Np, Am, and traces of Pu and U). Among the possible processes, the selective extraction of actinides with oxidation states higher than three is studied. First part of this work deals with a preliminary step; the elimination of the ruthenium from fission products solutions using the electrovolatilization of the RuO4 compound. The second part of this work concerns the complexation and oxidation reactions of the elements U, Np, Pu and Am in presence of a compound belonging to the insaturated polyanions family: the potassium phosphotungstate. For actinide ions with oxidation state (IV) complexed with phosphotungstate anion the extraction mechanism by dioctylamine was studied and the use of a chromatographic extraction technic permitted successful separations between tetravalents actinides and trivalents actinides. Finally, in accordance with the obtained results, the basis of a separation scheme for the management of fission products solutions is proposed.}
place = {France}
year = {1991}
month = {Jul}
}
title = {Selective extraction of actinides from high level liquid wastes. Study of the possibilities offered by the Redox properties of actinides; Extraction selective des actinides des effluents de haute activite. Etude des possibilites offertes par les proprietes Redox des actinides}
author = {Adnet, J M}
abstractNote = {Partitioning of high level liquid wastes coming from nuclear fuel reprocessing by the PUREX process, consists in the elimination of minor actinides (Np, Am, and traces of Pu and U). Among the possible processes, the selective extraction of actinides with oxidation states higher than three is studied. First part of this work deals with a preliminary step; the elimination of the ruthenium from fission products solutions using the electrovolatilization of the RuO4 compound. The second part of this work concerns the complexation and oxidation reactions of the elements U, Np, Pu and Am in presence of a compound belonging to the insaturated polyanions family: the potassium phosphotungstate. For actinide ions with oxidation state (IV) complexed with phosphotungstate anion the extraction mechanism by dioctylamine was studied and the use of a chromatographic extraction technic permitted successful separations between tetravalents actinides and trivalents actinides. Finally, in accordance with the obtained results, the basis of a separation scheme for the management of fission products solutions is proposed.}
place = {France}
year = {1991}
month = {Jul}
}