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@MASTERSTHESIS{Benhajjam:1042713,
author = {Benhajjam, Zineb},
title = {{I}nvestigation of {M}e-{TDDGA} as {E}xtractant for
{G}rouped {A}ctinides {S}eparation from {L}anthanides},
school = {University of Applied Sciences Aachen},
type = {Masterarbeit},
reportid = {FZJ-2025-02659},
pages = {66 p.},
year = {2025},
note = {Masterarbeit, University of Applied Sciences Aachen, 2025},
abstract = {The removal of minor actinides (MAs) from nuclear waste -
in particular the separation of Am(III) from lanthanide (Ln)
fission products - is an important step in the partitioning
and transmutation $(P\&T)$ strategy aimed at reducing
long-term heat load and radiotoxicity. In this study, a
newly synthesized DGA ligand,
2-(2-[didecyl]-2-oxoethoxy)-N,N-didecylpropanamide
(Me-TDDGA), was evaluated for its extraction performance and
selectivity towards tri- and tetravalent actinides and
trivalent lanthanides under different experimental
conditions. While Me-TDDGA alone did not achieve significant
separation between An(III) and Ln(III), the introduction of
2,6-bis(5,6-di(sulfophenyl)-1,2,4-triazin-3-yl)pyridine
(SO₃-Ph-BTP) as a co-extractant showed remarkable
improvements in separation factors. Additionally, the use of
2,6-bis[1-(propan-1-ol)-1,2,3-triazol-4-yl)]pyridine (PTD),
a better alternative to SO3-Ph-BTP as it obeys the CHON
principle, was investigated, and higher concentrations can
further improve selectivity. These results highlight the
potential of multi-component extraction systems and set the
stage for future optimization towards more efficient
actinide-lanthanide separations.},
cin = {IFN-2},
cid = {I:(DE-Juel1)IFN-2-20101013},
pnm = {1412 - Predisposal (POF4-141)},
pid = {G:(DE-HGF)POF4-1412},
typ = {PUB:(DE-HGF)19},
doi = {10.34734/FZJ-2025-02659},
url = {https://juser.fz-juelich.de/record/1042713},
}