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@ARTICLE{Wilden:906294,
author = {Wilden, Andreas and Schneider, Dimitri and Paparigas, Zaina
and Henkes, Maximilian and Kreft, Fabian and Geist, Andreas
and Mossini, Eros and Macerata, Elena and Mariani, Mario and
Gullo, Maria Chiara and Casnati, Alessandro and Modolo,
Giuseppe},
title = {{S}elective actinide({III}) separation using
2,6-bis[1-(propan-1-ol)-1,2,3-triazol-4-yl]pyridine
({P}y{T}ri-{D}iol) in the innovative-{SANEX} process:
laboratory scale counter current centrifugal contactor
demonstration},
journal = {Radiochimica acta},
volume = {},
issn = {0033-8230},
address = {Berlin},
publisher = {De Gruyter},
reportid = {FZJ-2022-01349},
pages = {21 p.},
year = {2022},
abstract = {An innovative-SANEX process for the selective separation of
the trivalent actinides americium and curium from a
simulated PUREX raffinate solution was successfully
demonstrated on the laboratory scale using a 16-stage 1 cm
annular centrifugal contactor setup. The solvent was
composed of 0.2 mol L−1
N,N,N',N'-tetra-n-octyl-diglycolamide (TODGA) and $5\%$ v/v
1-octanol in a kerosene diluent. Zr(IV) and Pd(II)
co-extraction was prevented using
trans-1,2-diaminocyclohexane-N,N,N',N'-tetraacetic acid
(CDTA) as a masking agent in the feed. The actinide(III)
selective back-extraction was achieved using
2,6-bis[1-(propan-1-ol)-1,2,3-triazol-4-yl]pyridine
(PyTri-Diol) in 0.45 mol L−1 HNO3 as a CHON alternative to
the sulfur-containing stripping agent used in a previous
version of the innovative-SANEX process. The new process
described in this paper showed excellent performance for the
recovery of An(III). An An(III) product with a
quasi-quantitative recovery of americium and curium
$(≥99.9\%)$ and very good separation from fission and
activation products was obtained (decontamination factors
≥4,000). Only a slight contamination with Zr and Ru was
observed. This test demonstrates the successful use of
molecules containing only carbon, hydrogen, oxygen, and
nitrogen atoms (so-called CHON molecules) for the selective
separation of An(III) from a simulated PUREX raffinate
solution. By avoiding sulfur- or phosphorous-containing
molecules, the generation of secondary radioactive waste
during process operation can be reduced drastically.},
cin = {IEK-6},
ddc = {610},
cid = {I:(DE-Juel1)IEK-6-20101013},
pnm = {1412 - Predisposal (POF4-141) / GENIORS - GEN IV Integrated
Oxide fuels recycling strategies (755171) / PATRICIA -
Partitioning And Transmuter Research Initiative in a
Collaborative Innovation Action (945077)},
pid = {G:(DE-HGF)POF4-1412 / G:(EU-Grant)755171 /
G:(EU-Grant)945077},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000784344500001},
doi = {10.1515/ract-2022-0014},
url = {https://juser.fz-juelich.de/record/906294},
}