Conveners
Separation Methods, Speciation 1
- Andreas Geist (Karlsruhe Institute of Technology (KIT))
- Mojmír Němec (CTU FNSPE, Department of Nuclear Chemistry)
Description
(session dedicated to the memory of prof. Věra Jedináková-Křížová)
Prof.
Petra Panak
(University of Heidelberg)
5/12/14, 3:30 PM
Separation Methods, Speciation
Invited
The recycling of minor actinides as nuclear fuel is complicated by the presence of curium due to its short term thermal power and neutron dose rate. Thus the development of processes for separating americium from curium are of particular interest. A new system was developed to separate only americium, addressing some of the challenges with the EXAm process such as a narrow pH window. The so...
Ms
Jenny Halleröd
(Chalmers University of Technology)
5/12/14, 4:00 PM
Separation Methods, Speciation
Verbal
At Chalmers university of technology, the main research focus within the transmutation and separation field has been the development of a GANEX (Group ActiNide EXtraction) process. The main idea with partitioning and transmutation is to separate the transuranic elements and the fission products in used nuclear fuel from each other and then use a fast neutron spectrum to transmute the...
416.
Separation of Minor Actinoids(III) over Lanthanoids(III) by BTBP or BTPhen Extracting Compounds
Mr
Petr Distler
(CTU in Prague)
5/12/14, 4:15 PM
Separation Methods, Speciation
Verbal
Different extraction systems for the separation of trivalent minor actinoids over lanthanoids were studied during last years. The CyMe4-BTBP and its derivatives have been demonstrated to be prospective extractants for the solvent extraction of minor actinoids over lanthanoids from high-level liquid waste issuing the reprocessing of irradiated nuclear fuel (the r-SANEX process).
The...
Mr
Łukasz Steczek
(Institute of Nuclear Chemistry and Technology)
5/12/14, 4:30 PM
Separation Methods, Speciation
Verbal
N,N,N′,N′-tetraoctyl-diglycolamide (TODGA) is broadly studied as a non-specific extractant for actinides and lanthanides from HNO3 solutions of nuclear waste, in particular for group actinide extraction (GANEX process). Geist and his coworkers proposed a novel hydrophilic ligand, 2,6-bis(5,6-di-(sulfophenyl)-1,2,4-triazin-3-yl)pyridine (SO3-Ph-BTP) for selective stripping of actinides(III)...
Dr
Mikhail Alyapyshev
(Khlopin Radium Institute)
5/12/14, 4:45 PM
Separation Methods, Speciation
Verbal
Various neutral ligands are studied as potential ligands for separation of actinides from lanthanides. The most effective extractants for selective recovery of actinides from high level wastes are poly nitrogen compounds. The presence of several “soft” donor atoms in ligand structure allows to reach very high Am/Eu separation factor values. Recently a new class of neutral polydentate compounds...
