(U,Ce)O2: a suitable analogue to study the alteration of (U,Pu)O2 MOX fuel in environmental conditions

Théo Montaigne¹, Stéphanie Szenknect¹, Véronique Broudic², Frédéric Miserque³, Florent Tocino⁴, Christelle Martin⁵, Christophe Jégou², Nicolas Dacheux¹

¹ICSM, Univ Montpellier, CNRS, CEA, ENSCM, France; ²CEA/DES/ISEC/DPME, Univ Montpellier, France; ³CEA/DES/ISAS/ DRMP, Univ Paris-Saclay, France; ⁴EDF R & D, France; ⁵ANDRA, R & D Division, France

Dissolution of spent nuclear fuels under repository relevant conditions and release of uranium

Michel Herm, Ernesto González-Robles, Luis Iglesias, Tobias König, Andreas Loida, Arndt Walschburger, Volker Metz

Karlsruhe Institute of Technology, Germany

Leaching behavior of a spent MIMAS MOX fuel under chemical conditions of an underwater storage in pool

Sarah Mougnaud, Sandrine Miro, Magaly Tribet, Christophe Jegou, Caroline Marques, Sylvain Peuget

CEA, DES, ISEC, DPME, Univ. Montpellier, Marcoule (France)

Understanding the corrosion behaviour of used mixed oxide (MOX) fuels: Insights from post-leaching characterisation

Christian Schreinemachers¹, Giuseppe Modolo¹, Gregory Leinders², Thierry Mennecart³, Christelle Cachoir³, Karel Lemmens³, Marc Verwerft², Guido Deissmann¹, Dirk Bosbach¹

¹Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research – Nuclear Waste Management (IEK-6), Germany; ²Belgian Nuclear Research Centre (SCK CEN), Institute for Nuclear Energy Technology, Belgium; ³Belgian Nuclear Research Centre (SCK CEN), Institute for Sustainable Waste & Decommissioning, Belgium

Advanced characterization of secondary phases formed during long-term aqueous leaching of spent nuclear fuel

Olivia Roth¹, Charlotta Askeljung², Kyle Johnson³, Alexandre Barreiro-Fidalgo³, Lena Zetterström Evins¹

¹Swedish Nuclear Fuel and Waste Management Co (SKB), Sweden; ²AB Svafo, Sweden; ³Studsvik Nuclear AB, Sweden

IN SITU RAMAN MONITORING OF STUDTITE FORMATION UNDER ALPHA RADIOLYSIS WITH 18O ISOTOPIC LABELING

Aurélien Perrot¹, Aurélien Canizares², Sandrine Miro¹, Christophe Jegou¹, Laurent Claparede³, Renaud Podor³, Sylvain Peuget¹, Nicolas Dacheux³

¹CEA, DES, ISEC, DPME, Univ Montpellier, Marcoule, France; ²CEMHTI, Univ d’Orléans, Orléans, France; ³CEA, CNRS, ENSCM, ICSM, Univ Montpellier, Marcoule, France

Disposal options for molten salt reactor waste from the Dutch fuel salt irradiation program

Eva de Visser-Týnová, Ralph Hania, Arend Booij, Sem Leftin, Konstantin Kottrup

Nuclear Research and consultancy Group (NRG), The Netherlands

Metal Organic Frameworks for Off-gas Management

Praveen K Thallapally, Patricia D Paviet

Pacific Northwest National Laboratory, United States of America

Crystal Growth of Actinide Materials as Potential Nuclear Waste Forms

Hans-Conrad zur Loye

University of South Carolina, United States of America

Influence on the grain size on the adsorption kinetics of Cs by hierarchical aluminosilicate materials

Vanessa Proust^1,4, Alban Gossard^1,4, Thomas David^2,4, Shenyang Hu^3,4, Hans-Conrad zur Loye⁴, Agnès Grandjean^1,4

¹CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France; ²CEA, DRT, LITEN, DTNM, Grenoble, France; ³Pacific Northwest National Laboratory, Richland, WA 99352, USA; ⁴Ctr Hierarch Waste Form Mat, Columbia, SC 29208 USA

A site occupancy effects on structure and thermochemistry in tunnel structured KxMgx/2Ti8-x/2O16 (0<𝑥<2) hollandites

Kyle Scott Brinkman¹, Nancy Birkner¹, Nakeshma Cassel¹, Shraddha Jadhav¹, Amir Mofrad², Ted Besmann², Jake Amoroso³

¹Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA.; ²Nuclear Engineering Program, Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208, USA; ³Savannah River National Laboratory, Aiken, SC 29808, USA.

First Principles and CALPHAD Modeling of Hollandite-Type Materials for Actinide and Alkali/Alkaline Earth Fission Product Sequestration

Ted Besmann, Amir M. Mofrad, Juliano Schorne-Pinto, Jorge Paz Soldan Palma

University of South Carolina, United States of America

Hydrothermal conversion of geopolymeric precursors in zeolites for an optimized trapping and conditioning of Cs

Alban Gossard^1,3, Vanessa Proust^1,3, Thomas David^2,3, Scott Misture³, Jack Amoroso³, Hans-Conrad zur Loye³, Agnès Grandjean^1,3

¹CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France; ²CEA, DRT, LITEN, DTNM, Grenoble, France; ³Ctr Hierarch Waste Form Mat, Columbia, SC 29208 USA