Development of a selective americium separation process using TPAEN as a water-soluble stripping agent - Archive ouverte HAL Access content directly
Conference Papers Year : 2015

Development of a selective americium separation process using TPAEN as a water-soluble stripping agent

(1) , (1) , (1) , (2) , (2) , (2) , (1) , (3)
1
2
3

Abstract

Recycling americium from spent fuels is an important option considered for the future nuclear cycle. The PUREX solvent extraction process can be used to separate U and Pu from a dissolution solution of spent fuel in nitric acid. Then in a second step americium should be separated from fission products and especially lanthanides but also from curium. For this purpose, a new liquid-liquid extraction process is under development using TODGA as an extractant in the organic phase and TPAEN as a selective Am stripping agent in the aqueous phase. With this promising system it is possible to co-extract Am, Cm and lanthanides at high acidity and then selectively strip americium from the loaded organic phase at pH around 1 with TPAEN. Batch data were acquired to evaluate best conditions to develop a liquid-liquid extraction flowsheet and the effect of several parameters on Am/Cm was evaluated like concentration of ligand, cations, temperature, etc.
Fichier principal
Vignette du fichier
201500001611_s1.pdf (12.82 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-02500841 , version 1 (06-03-2020)

Identifiers

  • HAL Id : cea-02500841 , version 1

Cite

C. Marie, M.-T. Duchesne, E. Russello, P. Kaufholz, A. Wilden, et al.. Development of a selective americium separation process using TPAEN as a water-soluble stripping agent. GLOBAL 2015 - "Nuclear Energy: Industry Outlook & Prospects", Sep 2015, Paris, France. ⟨cea-02500841⟩

Collections

CEA DEN
24 View
25 Download

Share

Gmail Facebook Twitter LinkedIn More