ADOPT Meeting-4 EC, Brussels, Belgium 1 PARTITION Status and Planning for the Cluster evaluation by Charles MADIC Presented by Michaël Lecomte CEA/ Direction de l’énergie nucléaire

ADOPT Meeting-4 EC, Brussels, Belgium 2 OUT-LINE Introduction Possible work packages –A/ Hydrometallurgy –B/ Pyrometallurgy Conclusions

ADOPT Meeting-4 EC, Brussels, Belgium 3 Introduction –Continuity The research in PARTITIONING to be carried out within the European 6 th FP will be in continuity with that done during the 5 th FP: –the main target elements for partition will be the Actinides (An), –both hydro and pyro metallurgical processes will be developed, –the research teams to be involved will be mainly those of the PARTNEW, CALIXPART and PYROREP collaborations. –Novelty: Main axes for the research (for both hydro and pyro) Partitioning of Minor Actinides (MAs = Am-Cf) and some LLFP(s) from high burn-up UOX and multi-recycled MOx fuels, advanced fuels Partitioning (recycling all Actinides together/non Proliferation) of An for future fuel cycles (GCRs, MSRs and ADSs).

ADOPT Meeting-4 EC, Brussels, Belgium 4 Possible Work Packages (WPs) –A/ Hydrometallurgy General comments –For each of the following WPs, the research will be quite broad, including : »(i) the molecular modelling of the ligands, »(ii) their synthesis and characterization, »(iii) the study of their extracting properties (thermodynamics, kinetics, structures at molecular and supramolecular scales), »(iv) the study of the stability of the ligands vs radiolysis and hydrolysis, »(v) the scaling-up of the synthesis for the ligand selected for process development, »(vi) the design of process flowsheet, »(vii) cold test(s) of the processes, »(viii) hot tests of the processes. Industrial property Classification /Proliferation

ADOPT Meeting-4 EC, Brussels, Belgium 5 Possible Work Packages (WPs) –A/ Hydrometallurgy WP1 –Partitioning of An = Am-Cf from HARs and HACs issued from the reprocessing of UOx (high burn-up) and MOX (multi-recycled) fuels, –The processes to be developed will be in the continuity of those studied within the PARTNEW program (DIAMEX, SANEX with N and/or S-bearing ligands). Moreover, Am/Cm/Bk/Cf separations will be studied. WP2 –Partitioning of An(III) (An = Am-Cf) from HARs and HACs issued from the reprocessing of UOx (high burn-up), MOX (multi-recycled) fuels and advanced fuels. –The extractant to be selected will belong to the functionalized calix- arene family. The process will permit the selective extraction of An(III) and, possibly, their mutual separation. –The work will be done by the ex-CALIXPART teams.

ADOPT Meeting-4 EC, Brussels, Belgium 6 Possible Work Packages (WPs) –A/ Hydrometallurgy WP3 –Co-partitioning of An(III) (An = Am-Cf) and Cs(I) from HARs and HACs issued from the reprocessing of UOx (high burn-up) and MOX (multi-recycled) fuels, –The solvent will contain a mixture of diamide (An(III) extraction) and calixarene (Cs extraction) : Cs = LLFP (Cs 135) and heater FP (Cs 137), (Sr extraction) ? –This process will be developed by joint teams from ex-PARTNEW and ex-CALIXPART collaborations.

ADOPT Meeting-4 EC, Brussels, Belgium 7 Possible Work Packages (WPs) –A/ Hydrometallurgy WP4 –Partitioning of An for future fuel cycles (GCRs, MSRs, ASDs) –The co-extraction of An(VI) (An = U, Np, Pu), An(IV) (An = Np, Pu), and An(III) (An = Am-Cf) will be studied. Several process concepts will be tested: (i) mixture of extractants (diamide + acidic extractant), (ii) definition of bi-topic extractants (totally new concept), (iii) chromatography techniques –The research will be done in the continuity of PARTNEW. WP5 –The nature of the study will be similar to that of the WP4, but calixarene type of ligands will be studied, –Consequently, ex-CALIXPART teams will be in charge of the study. WP6 –Methods for the co-conversion of Ans for fuel preparation (oxide, nitride or carbide) : crystallization, precipitation, solgel process...

ADOPT Meeting-4 EC, Brussels, Belgium 8 Possible Work Packages (WPs) –A/ Pyrometallurgy WP7 –Partitioning of An from current HLWs issued from UOx and/or MOx fuel reprocessing by the PUREX process, –Molten salt (MS) media to be studied will be: (i) chlorides, (ii) fluorides, –Completion of basic property determination of An in MSs, –demonstration of the feasibility of high An recovery yields (99.9%) with sufficient DFs vs FPs WP8 –Processing of spent fuels for future fuel cycles, –Molten salt (MS) media to be studied will be: (i) chlorides, (ii) fluorides, –recycling all An together, –high burn-up fuels and short cooling times.

ADOPT Meeting-4 EC, Brussels, Belgium 9 Possible Work Packages (WPs) –A/ Pyrometallurgy WP9 –Chemistry of the trans-curium elements in MSs (Cl and F). WP10 –Study of the conditioning of the wastes genetated by process implementation (mainly the spent salts). WP11 –Systems studies.

ADOPT Meeting-4 EC, Brussels, Belgium 10 Conclusions –The work to be done within the 6 th FP in the field of partitioning will be in the continuity with the research carried out during the 5 th FP: this will allow the strengthening of the previously obtained results, –New routes will be followed, mainly in relation with possible new fuel cycles; this will imply important creativity in the research, –The working force to be involved, for very fundamental work to very applied ones, seems to be very optimistic and one can thus expect great success for the research.