
Christophe Tournassat
Présentation
Christophe Tournassat is a Professor at the University of Orléans, France, and the Director of OSUC (Observatoire des Sciences de l'Univers en Région Centre-Val-de-Loire), which is the Earth and Space Sciences Observatory in Orléans. He is also a Visiting Faculty in the Energy Geosciences Division, Earth and Environmental Sciences Area at the Lawrence Berkeley National Laboratory, USA. Christophe Tournassat holds B.Sc. and M.Sc. degrees in Earth Sciences from the Ecole Normale Supérieure de Lyon, France, a Ph.D. in Environmental Geochemistry from the University of Grenoble, France, and an "Habilitation à diriger des recherches" in Geology from the University of Nantes, France. His scientific interest covers a range of topics from thermodynamics and kinetics of low-temperature water/solutes/rock interactions to multi-scale numerical modeling of retention and transfer processes in geological media. He co-develops, with Carl Steefel, the code CrunchClay, which can simulate coupled non-Fickian/non-Darcian transport together with reactive processes in nanoporous media. Christophe Tournassat is an associate editor of Geochimica et Cosmochimica Acta, and is a member of the editorial board of Applied Clay science. He is the 2023 recipient of the Marion L. and Chrystie M. Jackson Mid-Career Clay Scientist Award of the Clay Mineral Society.
Publications
Publications
Reactive Transport in Natural and Engineered Systems85, 2019, ⟨10.1515/9781501512001⟩
Ouvrages
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Natural and engineered clay barriersChristophe Tournassat; Carl I. Steefel; Ian C. Bourg; Faiza Bergaya. Elsevier, 6, 432 p., 2015, Developments in clay science, 9780081000274
Ouvrages
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Modeling the long-term stability of multi-barrier systems for radioactive waste disposal in geological clay formationsYitian Xiao; Fiona Whitaker; Tianfu Xu; Carl Steefel. Reactive Transport Modeling: Applications in Subsurface Energy and Environmental Problems, , pp.CHAPTER 8, 2018, 9781119060000. ⟨10.1002/9781119060031.ch8⟩
Chapitre d'ouvrage
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Modeling the Long‐term Stability of Multi‐barrier Systems for Nuclear Waste Disposal in Geological Clay FormationsReactive Transport Modelin. Reactive Transport Modeling: Applications in Subsurface Energy and Environmental Problems, 1, Chapitre 8, Wiley, 2018
Chapitre d'ouvrage
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Impact of microstructure on anion exclusion in compacted clay mediaThorsten Schäfer; Reiner Dohrmann; H.C. Greenwell. The Clay Minerals Society Workshop Lectures Series, 21, pp.137-149, 2016, FILLING THE GAPS – FROM MICROSCOPIC PORE STRUCTURES TO TRANSPORT PROPERTIES IN SHALES, ⟨10.1346/CMS-WLS-21.11⟩
Chapitre d'ouvrage
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Reactivity of bentonite : an additive model applied to uranyl sorptionJ. Lützenkirchen. Surface complexation modelling, Elsevier, pp.539-552, 2006, Interface Science and Technology, ⟨10.1016/S1573-4285(06)80064-5⟩
Chapitre d'ouvrage
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Interactions cations - argiles : le cas du Fe(II). Application au contexte de stockage profond des déchets radioactifsIngénierie de l'environnement. Université Joseph-Fourier - Grenoble I, 2003. Français. ⟨NNT : ⟩
Thèse
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Selenate uptake by green rustGoldschmidt 2023, Jul 2023, Lyon, France
Communication dans un congrès
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Ion Transport in Fractured ShaleAGU Fall Meeting 2022, 2022, à renseigner, Unknown Region
Communication dans un congrès
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Competitive sorption processes at clay surfaces: Experimental and modeling approaches8th International Conference on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement, Jun 2022, Nancy, France
Communication dans un congrès
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porousMedia4Foam: An open-source multiphase reactive transport platform based on OpenFOAM for geothermal applicationsEuropean Geothermal Congress 2022, Oct 2022, BERLIN, Germany
Communication dans un congrès
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A Prediction of Uranium(VI) Diffusion in Montmorillonite at Various Chemical Solution ConditionsHow to integrate geochemistry at affordable costs into reactive transport for large-scale systems, Feb 2020, Helmholtz-Zentrum Dresden-Rossendorf, Germany
Communication dans un congrès
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A "lab-on-a-chip" experiment for assessing mineral precipitation processes in fractured porous mediaEGU General Assembly 2020, May 2020, Online, France. ⟨10.5194/egusphere-egu2020-13613⟩
Communication dans un congrès
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A mean electrostatic model for ion transport through heterogeneous clayEuroclay 2019, Jul 2019, Paris, France
Communication dans un congrès
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Simulating uranium(VI) diffusion in sodium-montmorillonite as a function of chemical solution conditions257th National Meeting of the American-Chemical-Society, Mar 2019, Orlando, United States
Communication dans un congrès
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Retention of arsenic, chromium and boron on an outcropping clay-rich rock formation (the Tégulines Clay, eastern France)Euroclay, Jul 2019, Paris, France
Communication dans un congrès
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Ion exchange in fougèrite: influence of crystal size and structural defectsEuroclay 2019, Jul 2019, Paris, France
Communication dans un congrès
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Fate of Gluconic Acid in Context of Radioactive Waste Disposal: Batch Experiments29th International Meeting on Organic Geochemistry, Sep 2019, Gothenburg, Sweden. pp.1-2, ⟨10.3997/2214-4609.201902763⟩
Communication dans un congrès
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Multi-component reactive transport in a claystone: insights from a ten-year alkaline in situ injection experiment17th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere, Sep 2019, kyoto, Japan
Communication dans un congrès
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Influence of calcite on uranium(VI) sorption onto montmorillonite clayNational Meeting of the American-Chemical-Society, Mar 2019, philadelphie, United States
Communication dans un congrès
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Modeling of coupled processes in nanoporous media. From molecular dynamics information to reactive transport modelingGoldschmidt Conference, Aug 2019, Barcelone, Spain
Communication dans un congrès
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Ion exchange in fougèrite: influence of crystal size and structural defectsGoldschmidt 2019, Aug 2019, Barcelone, Spain
Communication dans un congrès
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Coupling clay swelling properties to hydro-geochemical conditions: a reactive transport modeling approachDECOVALEX 2019 Symposium, Nov 2019, Brugg, Switzerland
Communication dans un congrès
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Multi-Continuum Reactive Transport Modeling Approaches for Heterogeneous Clay Media: Overview and ChallengesAGU Fall Meeting, Dec 2018, Washington, DC, United States
Communication dans un congrès
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From microstructure description to macro-scale properties of clay barriersCouFrac - International Conference on Coupled Processes in Fractured Geological Media: Observation, Modeling, and Application, Nov 2018, Wuhan, China
Communication dans un congrès
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Shales and geological waste repositories: from microstructure description to macro-scale propertiesComputational Methods in Water Resources XXII - CMWR 2018, Jun 2018, Saint-Malo, France
Communication dans un congrès
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Shales and geological waste repositories: from microstructure description to macro-scale propertiesAmerican Geophysical Union, 2017, San Franciscp, United States
Communication dans un congrès
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Redox potential measurements in a claystoneClay Conference 2017, Sep 2017, DAVOS, Switzerland
Communication dans un congrès
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MODELING URANIUM(VI) ADSORPTION ONTO MONTMORILLONITE UNDER VARYING CARBONATE CONCENTRATIONS: A SURFACE COMPLEXATION MODEL ACCOUNTING FOR THE SPILLOVER EFFECT ON SURFACE POTENTIALMigration, Sep 2017, Barcelona, Spain
Communication dans un congrès
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Imaging a pore network in a clay-rock at the sub-nanometer scale9th International Conference on Porous Media & Annual Meeting, May 2017, Rotterdam, Netherlands
Communication dans un congrès
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Diffusion in clays. Continuum and micro-continuum approaches9th International Conference on Porous Media & Annual Meeting 2017, May 2017, Rotterdam, Netherlands
Communication dans un congrès
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Retention behavior of As, Cr, B, Hg, and Cd on Teguline Clay samplesClay Conference 2017, Sep 2017, Davos, Switzerland
Communication dans un congrès
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Kinetics and Mechanisms of Ni Sorption by Nanocrystalline VernaditeGoldschmidt 2017, Aug 2017, Paris, France
Communication dans un congrès
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Modeling the acid-base properties of montmorillonite edge surfacesClay Conference 2017, Sep 2017, Davos, Switzerland
Communication dans un congrès
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Diffusion in clays: molecular scale view, continuum scale modeling and importance of microstructureGoldschmidt 2016, Jun 2016, Yokohama, Japan
Communication dans un congrès
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Profil d'altération dans les argiles tégulines, Bassin de Paris, France25e Réunion des Sciences de la Terre, Oct 2016, Caen, France
Communication dans un congrès
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Anion exclusion and diffusion in smectite clay barriers252nd American Chemical Society National Meeting & Exposition, Aug 2016, Philadelphia, United States
Communication dans un congrès
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Molecular dynamics simulations of anion exclusion in clay interlayer nanopores14éme Colloque du Groupe Français des Argiles, May 2016, Poitiers, France
Communication dans un congrès
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Retention processes in clay-rocksGoldschmidt 2015, Aug 2015, Prague, Czech Republic
Communication dans un congrès
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Carbonates reactivity in temperature and interactions with Fe- mineralsClay Conference, Mar 2015, Bruxelles, Belgium
Communication dans un congrès
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Kinetic experiments in order to determine the rate of oxygen consumption by the Callovian-Oxfordian argillaceous rockClays in natural and engineered barriers for radioactive waste confinement, Mar 2015, Bruxelles, Belgium
Communication dans un congrès
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Uranium(VI) Diffusion in Sodium-Montmorillonite at Alkaline pH14ème Colloque du Groupe Français des Argiles, May 2016, Poitiers, France
Communication dans un congrès
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Breakdown of the modified Gouy-Chapman model for clay surfaces in equilibrium witha CaCl 2 electrolyte: a molecular dynamic studyClays in Natural and Engineered Barriers for Radioactive Waste Confinement, Mar 2015, Brussels, Belgium
Communication dans un congrès
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Study of dolomite dissolution at various temperatures – Evidence for the formation of nanocrystalline secondary phases at dolomite surface and influence on dolomite interactions with other minerals2015 AGU Fall meeting, American Geophysical Union, Dec 2015, San Francisco, United States
Communication dans un congrès
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Impact of microstructure on anion exclusion in compacted clay mediaEuroclay 2015, Clay Mineral Society, Jul 2015, Edinburgh, United Kingdom
Communication dans un congrès
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Structural defects in layered structures: Their determination and their impact on reactivityClays in natural and engineered barriers for radioactive waste confinement: 6th international conference, Mar 2015, Bruxelles, Belgium
Communication dans un congrès
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Impacts of pore structure and diffusion-accessible porosity for calcium-bromide diffusion in sodium-montmorillonite248th National Meeting of the American-Chemical-Society (ACS), Aug 2014, San Francisco, United States
Communication dans un congrès
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Quantification of the breakdown of modified Gouy-Chapman model for 2:1 salt background electrolyte: A molecular dynamic study248th National Meeting of the American-Chemical-Society (ACS), Aug 2014, San Francisco, United States
Communication dans un congrès
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In situ diffusion test of hydrogen gas in the Opalinus Clay5th Conference on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement, 2012, Montpellier, France. pp.563-578, ⟨10.1144/SP400.12⟩
Communication dans un congrès
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Molecular dynamics simulations of cation adsorption at mica-water interfaces248th National Meeting of the American-Chemical-Society (ACS), Aug 2014, San Francisco, United States
Communication dans un congrès
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Controls of Ca/Mg/Fe activity ratios in pore water chemistry models of the Callovian--Oxfordian Clay FormationFourteenth International Symposium on Water-Rock Interaction, WRI 14, Jun 2013, Avignon, France. pp.475-478, ⟨10.1016/j.proeps.2013.03.133⟩
Communication dans un congrès
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Thermoddem: an example of alive thermochemical databaseGoldschmidt Conference 2013, Aug 2013, Florence, Italy. under process
Communication dans un congrès
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Avancées dans le domaine de la thermodynamique des minéraux argileux11ème colloque du Groupe Français des Argiles (GFA), Apr 2013, Ivry-sur-Seine, France
Communication dans un congrès
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Monitoring and modeling the behavior of synthetic cementitious like pore waters injected in an equipped borehole of the Meuse Haute Marne Underground Research LaboratoryThird International Workshop on Mechanisms and Modeling of Cement/Waste Interactions, May 2013, Ghent, Belgium
Communication dans un congrès
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Chemical homologue speciation in natural systems: a key to understand the anthropogenic RN fateGoldschmidt 2013, Aug 2013, Florence, Italy
Communication dans un congrès
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Pyrite-electrode potential measurements in reference solutions versus measured and computed redox potential: at the roots of an innovative generic pH electrode for nuclear waste repositoriesInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Cement/clay interactions: feedback on the increasing complexity of modeling assumptionsInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Diagenetic carbonates in clay-rich marine formationsInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Prediction of nickel mobility in a clayey formation requires accurate knowledge of the mineralogical assemblageInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Caesium uptake by Callovian-Oxfordian clayrock under alkaline perturbationInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Investigations on structural iron electrochemical properties in layered silicates using massive mica electrodesInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Influence of temperature on the geochemistry of Callovo-oxfordian argillite: batch experiments and modelling at 80°CInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Cement water injection in an equipped borehole of the Meuse Haute Marne Underground Research Laboratory: monitoring and modelingClays in Natural and Engineered Barriers for Radioactive Waste Confinement, Oct 2012, Montpellier, France
Communication dans un congrès
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Modeling the dioctahedral smectites layer charge variation versus structural Iron reduction levelInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Induced polarization of clay-sand mixtures: experiments and modellingInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Diffuse transport in clay media: µm to nm scale characterization of pore space and mineral spatial organizationInternational meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Modelling specific adsorption of divalent metals on montmorillonite surfaces. Pitfalls, recent achievements and current challenges.International meeting "Clays in Natural and Engineered Barriers for Radioactive Waste Confinement", Oct 2012, Montpellier, France
Communication dans un congrès
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Considering clay rock heterogeneity in radionuclide retentionClays in Natural & Engineered Barriers for Radioactive Waste Confinement, Mar 2011, Nantes, France
Communication dans un congrès
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Anions in clay materials : a case study for multi-scale modeling approachesGoldschmidt 2011, Aug 2011, Prague, Czech Republic
Communication dans un congrès
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CO2 partial pressure in clayrocks: a general modelWater-Rock Interaction WRI-13, Aug 2010, Guanajuato, Mexico. pp.855-858
Communication dans un congrès
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Comparative EPMA and μ-XRF methods for mapping micro-scale distribution of iodine in biocarbonates of the Callovian-Oxfordian clayey formation at Bure, Eastern part of the Paris Basin12th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere (Migration '09), Sep 2009, Kennewick, United States. pp.271-277, ⟨10.1016/j.pce.2010.04.003⟩
Communication dans un congrès
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Synthesis, characterization and properties of iron-rich Na montmorilloniteEuroclay 2007, Jul 2007, Aveiro, Portugal
Communication dans un congrès
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Reactivity of ferrous iron in anoxic environments: electron transfers in Se(IV)-Fe(II) mineral systems232nd ACS National Meeting, Sep 2006, San Francisco, United States
Communication dans un congrès
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Synthetic montmorillonite containing iron: preparation and caracterization1st. Annual Workshop, 6TH EC FP - FUNMIG IP, Nov 2005, Paris, France
Communication dans un congrès
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Sorption-induced reversible oxidation of Fe(II) a the montmorillonite/water interface. A Mössbauer Study1st. Annual Workshop, 6TH EC FP - FUNMIG IP, Nov 2005, Paris, France
Communication dans un congrès
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Evidences of the Fe(II) high redox reactivity in clay phases of Callovian-Oxfordian clay-stones. A Mössbauer study1st. Annual Workshop 6TH EC FP - FUNMIG IP, Nov 2005, Paris, France
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