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7. Experimental and Modeling of Extraction of Lanthanides in System HNO3-TEDGA-{DMDOHEMA-HDEHP}.

Author

Pacary, Vincent, Burdet, Fabien, and Duchesne, Marie-Thérèse

Subjects
EXTRACTION (Chemistry), RARE earth metals, NITRIC acid, MATHEMATICAL models, NUMERICAL calculations, AMERICIUM
Abstract

Abstract: This paper presents the development of a model which calculates the composition of the organic phase for a system used to remove selectively americium from a PUREX raffinate. A phenomenological approach is performed to aggregate step by step the specificities of this complex extraction system. Modeling of the influence of TEDGA is complex because experiments have shown that the water-soluble ligand TEDGA is extracted by the diamide and that its extraction is enhanced in presence of lanthanides. The formation of mixed solvates lanthanides-TEDGA-DMDOHEMA is thus taken into account. [Copyright &y& Elsevier]

Published
2012
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