%0 Journal Article
%A Modolo, G.
%A Kluxen, P.
%A Geist, A.
%T Demonstration of the LUCA process for the separation of americium(III) from curium(III), californium(III), and lanthanides(III) in acidic solution using a synergistic mixture of bis(chlorophenyl)dithiophosphinic acid and tris(2-ethylhexyl)phosphate
%J Radiochimica acta
%V 98
%@ 0033-8230
%C München
%I Oldenbourg
%M PreJuSER-9815
%P 193 - 201
%D 2010
%Z Financial support for this research was provided by the European Commission (project ACSEPT No. 211267).
%X The LUCA process was developed at Forschungszentrum Julich for the selective separation of Am(III) from an acidic solution containing the trivalent actinides Am(III). Cm(III), and Cf(III) as well as lanthanides. A mixture of 0.4 mol/L bis(chlorophenyl)dithiophosphinic acid and 0.15 mol/L tris(2-ethylhexyl)phosphate dissolved in 20% isooctane/80% tert-butyl benzene was used as the extractant. The process was carried out in centrifugal contactors using an optimized flowsheet involving 7 stages for extraction, 9 stages for scrubbing and 8 stages for back-extraction. Very encouraging results were obtained. A high feed decontamination factor was obtained for Am(III) (> 1000), and recovery in the product after stripping was higher than 99.8%. The Am(III) product was contaminated with 0.47% Cm(III). More than 99.9% Cf(III), Eu(III) and > 99.5% Cm(III) inventories were directed to the raffinate and the contamination with Am(III) (< 0.08%) was low. The experimental results were in good agreement with the predictions of a computer code.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000276838900002
%R 10.1524/ract.2010.1708
%U https://juser.fz-juelich.de/record/9815