Internal Report

FZJ-2024-05453

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png PATRICIA Deliverable D1.4 FP and Am behaviour with new CHON system

Wilden, A. (Corresponding author)FZJ* ; Sauerwein, F. S.FZJ* ; Schneider, D.FZJ* ; Paparigas, Z.FZJ* ; Henkes, M.FZJ* ; Modolo, G.FZJ* ; Baruth, G. ; Weßling, P. ; Geist, A. ; Marie, C. ; Gracia, S.

2024

Abstract: A new CHON AmSEL system was developed based on PrOH-BPTD as the americium-selective complexant. Previous investigations (see deliverable D1.1) found it to show sufficient efficiency and selectivity for americium over trivalent lanthanides and curium. PrOH-BPTD is able to complex Am(III) at nominal Am concentrations up to 20 mmol L−1 Am(III), without precipitate of third phase formation. High selectivity is also achieved in the presence of nominal concentrations of Ln(III), although a saturation effect is observed, reducing the selectivity over light lanthanides (especially La(III)). The resistance to alpha radiolysis was found to be excellent. The non-lanthanide fission products Mo, Sr, Zr, and Pd could potentially be co-stripped with Am, but can be handled using masking agents and nitric acid scrubbing. Only Tc was found to likely follow Am, if present in the PUREX raffinate.

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Contributing Institute(s):

1. Nukleare Entsorgung (IFN-2)

Research Program(s):

1. 1412 - Predisposal (POF4-141) (POF4-141)
2. PATRICIA - Partitioning And Transmuter Research Initiative in a Collaborative Innovation Action (945077) (945077)

Appears in the scientific report 2024

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