%0 Journal Article
%A Malmbeck, Rikard
%A Mugnusson, Daniel
%A Bourg, Stéphane
%A Carrott, Michael
%A Geist, Andreas
%A Hérès, Xavier
%A Miguirditchian, Manuel
%A Modolo, Giuseppe
%A Müllich, Udo
%A Miguirditchian,
%A Taylor, Robin
%A Wilden, Andreas
%T Homogenous Recycling of Transuranium Elements from Irradiated Fast Reactor Fuel by the EURO-GANEX Solvent Extraction Process
%J Radiochimica acta
%V 107
%N 9-11
%@ 0033-8230
%C Berlin
%I ˜Deœ Gruyter
%M FZJ-2019-02800
%P 917-929
%D 2019
%X The EURO-GANEX process was developed forco-separating transuranium elements from irradiatednuclear fuels. A hot flow-sheet trial was performed in acounter-current centrifugal contactor setup, using a genuinehigh active feed solution. Irradiated mixed (carbide,nitride) U80Pu20 fast reactor fuel containing 20 % Pu wasthermally treated to oxidise it to the oxide form which wasthen dissolved in HNO3. From this solution uranium wasseparated to >99.9 % in a primary solvent extraction cycleusing 1.0 mol/L DEHiBA (N,N-di(2-ethylhexyl)isobutyramidein TPH (hydrogenated tetrapropene) as the organicphase. The raffinate solution from this process, containing10 g/L Pu, was further processed in a second cycle of solventextraction. In this EURO-GANEX flow-sheet, TRU andfission product lanthanides were firstly co-extracted intoa solvent composed of 0.2 mol/L TODGA (N,N,N′,N′-tetran-octyl diglycolamide) and 0.5 mol/L DMDOHEMA (N,N′-dimethyl-N,N′-dioctyl-2-(2-hexyloxy-ethyl) malonamide)dissolved in Exxsol D80, separating them from most otherfission and corrosion products. Subsequently, the TRUwere selectively stripped from the collected loaded solventusing a solution containing 0.055 mol/L SO3-Ph-BTP(2,6-bis(5,6-di(3-sulphophenyl)-1,2,4-triazin-3-yl)pyridinetetrasodium salt) and 1 mol/L AHA (acetohydroxamicacid) in 0.5 mol/L HNO3; lanthanides were finally strippedusing 0.01 mol/L HNO3. Approximately 99.9 % of the TRUand less than 0.1 % of the lanthanides were found in theproduct solution, which also contained the major fractionsof Zr and Mo.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000489293000008
%R 10.1515/ract-2018-3089
%U https://juser.fz-juelich.de/record/862494