TY  - JOUR
AU  - Sanchez-Garcia, Ivan
AU  - Heres, Xavier
AU  - Peterman, Dean. R.
AU  - Galan, Hitos
AU  - Costenoble, Sylvain
AU  - Broussard, Sylvain
AU  - Sinot, Johann
AU  - Grimes, Travis S.
AU  - Anderson, Kash Reid
AU  - Jansone-Popova, Santa
AU  - Gullo, Maria Chiara
AU  - Casnati, Alessandro
AU  - Wilden, Andreas
AU  - Geist, Andreas
TI  - Interinstitutional Study of the New EURO-GANEX Process Resistance by Gamma Irradiation Test Loops
JO  - Industrial & engineering chemistry research
VL  - 62
IS  - 47
SN  - 0888-5885
CY  - Columbus, Ohio
PB  - American Chemical Society
M1  - FZJ-2023-04590
SP  - 20326–20339
PY  - 2023
AB  - As part of the homogeneous actinide recycling strategy, the EUROGANEXprocess is one of the most promising options to achieve the goal of minoractinides recovery. Improvements made to EURO-GANEX system have resulted in theemergence of the so-called New EURO-GANEX process, where the composition of thesolvent has been modified by replacing TODGA and DMDOHEMA with cismTDDGAin the organic phase and SO3-Ph-BTP with PyTri-Diol in the aqueousphase in order to resolve important issues. The objective of this work is 2-fold: evaluatethe gamma radiolytic resistance of the new EURO-GANEX process by dynamicirradiation conditions simulating the three main steps of the process and validate thedesign of CIEMAT Náyade, CEA Marcel, and INL irradiation loop devices since eachof them mimics different aspects of the real process. The Náyade and INL loops couldirradiate the organic and aqueous phases together, whereas in the CEA loop, theirradiated solvent is recycled continuously inside a platform with several stages ofmixer-settlers containing aqueous flows simulating the three main steps of the process. The extraction performances and changes inthe composition of the solvent have been analyzed during the irradiation experiment by different techniques: gamma spectrometryand ICP-MS/OES for cations or radioactive tracer extraction and HPLC-MS to identify and quantify the degradation compounds.Despite some differences between the three irradiation facilities, this interinstitutional study shows that these three comparative toolsprovide similar trends in the radiolytic stability of a liquid−liquid extraction system. Favorable extraction results for the differentsteps are obtained according to the static irradiation studies found in literature. However, the degradation of cis-mTDDGA isappreciable leading to degradation compounds, some of which form precipitates and produce important changes in viscosity,important aspects that must be addressed prior to the successful industrial application of the new EURO-GANEX process.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001111128200001
DO  - DOI:10.1021/acs.iecr.3c02884
UR  - https://juser.fz-juelich.de/record/1018146
ER  -