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Accueil > Annuaire du LHyGeS

CLEMENT Alain

publié le , mis à jour le

Research Engineer - CNRS

Contact : aclement@unistra.fr
Phone : +33 3 68 85 04 31

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Competences and expertise

- Development languages : Fortran2008, Java, Python
- Operating systems : Windows, Unix
- Networks : configuration of Cisco and Juniper switches, Stormshield Firewall
- Expert in scientific computation
- Thermodynamic and kinetic modeling of water-rock interactions
- Coupled transport reactive models

Research activities

Development of geochemistry computer codes
Kindis : thermodynamic and kinetic modeling of water-rock interactions in a homogeneous closed system
Therma : thermodynamic modeling of water-rock interactions in a homogeneous closed system under thermal gradient
Kirmat : reactive transport model to simulate the evolution of a saturated porous medium
Nanokin : simulation of germination and growth of mineral particles in contact with an aqueous solution. Variations of size and composition of the particles as function of time are taken into account

Technical activities

- LHYGES operating system and network administration
- Management of the informatic service
- In charge of the information technology equipment projects
- Computer security correspondent member for CNRS and UDS
- Steering committee member of X/Stra

Teaching / formation

- Introduction to water-rock interaction modeling and using of computer codes developed at LHYGES – Master National Argiles and International Master in Advanced Clay Science at University of Poitiers
- Water-rock interaction Initiation and models training for PhD_students/postdocs and external agencies (e.g. ANDRA)

Work in progress

- Modeling of nucleation and growth of mineral particles extended to binary ideal and non-ideal solid solutions.
- Collaboration with the University of La Réunion to modelize the geochemical reactions occuring during the alteration of a basaltic massif (expertising of the simulations performed by local associated teams)
- Introduction of state equations for gases in geochemical models developped at LHYGES
- Participation in DESTRESS project (Demonstration of soft stimulation treatments of geothermal reservoirs). Modification of a 1D reactive transport model to take heat diffusion into account
- Development of a numerical platform to allow the use of geochemical models through WEB interface. Test case with Kindis Model.


Publications

1995-2000

GERARD F., CLEMENT A., FRITZ B., CROVISIER J.L. (1996)
Introduction des phénomènes de transport dans le modèle thermo-cinétique KINDIS : le modèle KIRMAT.
C. R. Acad. Sci. Paris, 1996, 322, IIa, p. 377-384.

DEL NERO M, MADE B., BONTEMS G., CLEMENT A. (1997)
Adsorption of neptunium (V) on hydrargilite.
Radiochimica Acta, 1997, 76, p. 219-228.

DEL NERO M., BEN SAID K., MADE B., CLEMENT A., BONTEMS G. (1998)
Effect of pH and carbonate concentration in solution on the soption of neptunium (V) by hydrargilite : application of the non-electrostitic model.
Radiochimica Acta, 1998, 81, p. 133-141.

GERARD F., CLEMENT A., FRITZ B. (1998)
Numerical validation of an eulerian hydrochemical code using a 1-D multisolute mass transport system involving heterogeneous kinetically-controlled reactions.
J. Contaminant Hydrology, 1998, 30, 3-4, p. 199-214.

GERARD F., FRITZ B., CLEMENT A., CROVISIER J.L. (1998)
General implications of aluminium speciation-dependent kinetic dissolution rate law in water-rock modelling.
Chemical Geology, 1998, 151, 1-4, p. 247-258.

2001-2005

RISACHER F., CLEMENT A. (2001)
A microcomputer program for the simulation of evaporation of natural waters to high concentration.
Computers & Geosciences, 2001, 27, 2, p. 191-201.

DEL NERO M., SALAH S., MIURA T., CLEMENT A., GAUTHIER LAFAYE F. (2002)
Retention processes of U and REE in the Bangombe natural reactor zone.
Proc. 8th EC-Natural Analogue Working Group Meeting, Strasbourg, 23-25 mars 1999, Von Maravic H., Alexander W.R. (Eds), EUR Report Series "Nuclear Science and Technology, n°19118, 2002, p. 261-270. [rapport contrat européen]

MUNIER I. ; CROVISIER J.L. ; GRAMBOW B. ; FRITZ B. ; CLEMENT A. (2004)
Modelling the alteration gel composition of simplified borosilicate glasses by precipitation of an ideal solid solution in equilibrium with the leachant.
J. Nucl. Mater., 2004, 324,2-3, p. 97-115. doi:10.1016/j.jnucmat.2003.08.033

MONTES-H. G., FRITZ B., CLEMENT A., MICHAU N. (2005)
A simplified method to evaluate the swelling capacity evolution of a bentonite barrier related to geochemical transformations
Applied Geochemistry, 2005, 20, 2, p. 409-422 doi : 10.1016/j.apgeochem.2004.08.009

MONTES-HERNANDEZ G., FRITZ B., CLEMENT A. (2003)
Chemical stability study of an argillaceous barrier in a nuclear waste storage system.
Reunión Anual de la Unión Geofísica Mexicana, Puerto Vallarta, Jalisco, México, 3-7/11/03, GEOS, 23, 2 [communication orale]

NOURTIER-MAZAURIC E. ; GUY B. ; GARCIA D. ; CLEMENT A. ; FRITZ B. (2003)
Modelling the dissolution/precipitation of ideal solid solutions.
Int. Conf. "Gas - Water - Rock Interactions induced by Reservoir Exploitation, CO2 Sequestration, and other Geological Storage", Rueil Malmaison, 19-20/11/03 [communication orale]

FRITZ B. ; CLEMENT A. ; NOGUERA C. (2004)
Solid solution phases used as models for complex mineral phases in geochemical computer models.
14th Goldschmidt Conference 2004, Kopenhagen, 5-11/6/04, Abstract [516] A76 [communication orale]

NOGUERA C., FRITZ B., CLEMENT A., BARONNET A. (2004)
A geochemical model for dissolution, nucleation and growth of minerals in aqueous solutions.
14th Goldschmidt Conference 2004, Kopenhagen, 5-11/6/04, Abstract [518] A118 [conf. inv.]

FRITZ B. ; NOGUERA C. ; CLEMENT A. ; BARONNET A. (2005)
Nanokin : a geochemical computer model for dissolution, nucleation and growth of clay minerals of clay minerals in aqueous solutions.
2nd Int. Meeting Clays in Natural & Engineered Barriers for Radioactive Waste Confinement, Tours, 14-18/3/05, http://www.andra.fr/meeting2005/abstracts p. 215-216 [communication orale]

MARTY N. ; MONTES-H G. ; FRITZ B. ; CLEMENT A. ; MICHAU N. (2005)
Modeling of a bentonite engineered barrier system : feedback of mineralogical modifications on physical properties.
2nd Int. Meeting Clays in Natural & Engineered Barriers for Radioactive Waste Confinement, Tours, 14-18/3/05, http://www.andra.fr/meeting2005/abstracts p. 429 [affiche]

MONTES-H G. ; MARTY N., FRITZ B., CLEMENT A., MICHAU N. (2005)
Modeling of long-term diffusionreaction in a bentonite barrier for radioactive waste confinement.
2nd Int. Meeting Clays in Natural & Engineered Barriers for Radioactive Waste Confinement, Tours, 14-18/3/05, http://www.andra.fr/meeting2005/abstracts p. 487 [affiche]

MONTES-H G., FRITZ B., CLEMENT A., MICHAU N. (2005)
Modeling of transport and reaction in an engineered barrier for radioactive waste confinement.
Appl. Clay Sci., 2005, 29, 3-4, p. 155-171. doi:10.1016/j.clay.2005.01.004

MONTES-H G. ; FRITZ B. ; CLEMENT A. ; MICHAU N. (2005)
Modelling of geochemical reactions and experimental cation exchange in MX80 bentonite.
J. Environ. Manage., 2005, 77, 1, p. 35-46. doi:10.1016/j.jenvman.2005.03.003

MONTES-H. G., FRITZ B., CLEMENT A., MICHAU N. (2005)
Modelling of long-term diffusion-reaction in a bentonite barrier for radioactive waste confinement.
Appl. Clay Sci., 30, 3-4, p.181-198. doi:10.1016/j.clay.2005.07.006

2006-2010

MARTY N., FRITZ B., CLEMENT A., MICHAU N. (2006)
Modelling of a bentonite engineered barrier system : effects of mineralogical modifications on physical properties.
"Bridging Clays" Joint meeting CMS/GFA, Oléron, 3-7/6/06, abstract p. 181 [affiche]

NOGUERA C., CLEMENT A., BARONNET A., FRITZ B. (2006)
NANOKIN : a geochemical computer model for dissolution, nucleation and growth in aqueous solutions.
"Bridging Clays" Joint meeting CMS/GFA, Oléron, 3-7/6/06, abstract p. 203 [communication orale]

NOGUERA C., FRITZ B., CLEMENT A., BARONNET A. (2006)
NANOKIN : a geochemical computer model for dissolution, nucleation and growth in aqueous solutions.
Int. meeting IMA-2006, Kobé, 23-28/7/06 [communication orale]

NOGUERA C., FRITZ B., CLEMENT A., BARONNET A. (2005)
A geochemical model for dissolution, nucleation and growth of minerals in aqueous solution.
Fourth International Workshop on Oxide Surfaces (IWOX-4), Turin et Aussois, 3-8/1/05 [conf. inv.]

MARTY N., MONTES-HERNANDEZ G., FRITZ B., CLEMENT A., MICHAU N. (2007)
Modelling the long term alteration of the engineered bentonite barrier in an underground radioactive waste repository.
Workshop "Long term performance of smectitic clays embedding canisters with highly radioactive waste", Lund, 26-28/11/07 [communication orale].

NOGUERA C., FRITZ B., AMAL Y., CLEMENT A. (2008)
Simulation of the Nucleation and Growth of Solid Solutions in Aqueous Solutions
Goldschmidt 2008, Vancouver, Ca, 13-18/7/08, AbstractId=312 [communication orale] Geochim. Cosmochim. Acta, 2008, 72, 12, suppl. 1, A687

LUCAS Y., HAUSHALTER M., CLEMENT A., FRITZ B., CHABAUX F. (2008)
Hydrogeochemical modelling of the Alsace groundwater pollution by the potash mine spoil heaps.
Postmining 2008, Nancy, 6-7/2/08, Actes sur CD, 7 p.

FRITZ B., CLEMENT A., NOGUERA C. (2009)
Temperature effect on nucleation and growth in fluid-rock interaction processes.
Goldschmidt 2009 Davos, 21-29/6/09. Geochim. Cosmochim. Acta, 2009, 73, 13, Suppl. 1, A398. doi:10.1016/j.gca.2009.05.005

LUCAS Y., SCHMITT A.D., CHABAUX F., CLEMENT A., FRITZ B. (2009)
Quantification of cationic exchanges in the Upper Rhine valley potash basin : Coupled geochemical and modeling approach.
Goldschmidt 2009 Davos, 21-29/6/09. Geochim. Cosmochim. Acta, 2009, 73, 13, Suppl. 1, A798. doi:10.1016/j.gca.2009.05.010

NOGUERA C., FRITZ B., CLEMENT A. (2009)
Account of cationic exchange in the nucleation and growth of minerals in aqueous solutions.
Goldschmidt 2009 Davos, 21-29/6/09. Geochim. Cosmochim. Acta, 2009, 73, 13, Suppl. 1, A9508

MARTY N.C.M., FRITZ B., CLEMENT A., MICHAU N. (2010)
Modelling the long term alteration of the engineered bentonite barrier in an underground radioactive waste repository.
Appl. Clay Sci., 2010, 47, 1-2, 82-90 doi:10.1016/j.clay.2008.10.002

NOGUERA C., FRITZ B., CLEMENT A., AMAL Y. (2010)
Simulation of the nucleation and growth of binary solid solutions in aqueous solutions.
Chem Geol., 2010, 269, 1-2, 89-99. doi:10.1016/j.chemgeo.2009.05.025

LUCAS Y., SCHMITT A.D., CHABAUX F., CLEMENT A., FRITZ B., ELSASS P., DURAND S. (2010)
Geochemical tracing and hydrogeochemical modelling of water-rock interactions during salinization of alluvial groundwater (Upper Rhine Valley, France).
Appl. Geochem., 2010, 25, 11, 1644-1663. doi : 10.1016/j.apgeochem.2010.08.013

2011-2016

NOGUERA C., FRITZ B., CLEMENT A. (2011)
Simulation of the nucleation and growth of clay minerals coupled with cation exchange.
Geochim. Cosmochim. Acta, 2011, 75, 12, 3402-3418. doi : 10.1016/j.gca.2011.03.016

LU C., SAMPER J., FRITZ B., CLEMENT A., MONTENEGRO L. (2011)
Interactions of corrosion products and bentonite : An extended multicomponent reactive transport model.
Physics and Chemistry of the Earth 36 (2011) 1661–1668

SAMPER J., NAVES A., LU C., LI Y., FRITZ B., CLEMENT A. (2011)
Conceptual and numerical models of solute diffusion around a hlw repository in clay.
Physics and Chemistry of the Earth 36 (2011) 1714–1720

NOGUERA C., FRITZ B., CLEMENT A. (2012)
A theoretical treatment of the precipitation of doubly substituted solid solutions in aqueous solutions.
Crystal Growth & Design, 2012,12,7, 3444-3457

FRITZ B., CLEMENT A., MONTES-HERNANDES G. and NOGUERA C. (2013)
Calcite formation by hydrothermal carbonation of portlandite : Complementary insights from experiment and simulation.
CrystEngComm 15, 3392-3401

Ngo V.V., Delalande M., CLEMENT A., Michau N., FRITZ B. (2014)
Coupled transport-reaction modeling of the long-term interaction between
iron, bentonite and Callovo-Oxfordian claystone in radioactive waste
confinement systems.
Applied Clay Science
DOI

Noguera C., FRITZ B., CLEMENT A. (2015)
Precipitation mechanism of amorphous silica nanoparticles : A simulation
approach.
Journal of colloid and interface science
DOI

Ngo V.V., CLEMENT A., Michau N., FRITZ B. (2015)
Kinetic modeling of interactions between iron, clay and water :
Comparison with data from batch experiments.
Applied Geochemistry
DOI

Noguera C., FRITZ B., CLEMENT A. (2016)
Kinetics of precipitation of non-ideal solid solutions in a liquid
environment.
Chemical Geology
DOI

CLEMENT A. (2016)
Extension du couplage CALIPSO-KIRMAT à la modélisation de la couche de produits de corrosion.
Rapport Andra CCNTFEAP160009. Contrat de collaboration n’066030.


Communications

2010-2016

SAMPER J., LU C., NAVES A., FRITZ B., CLEMENT A. (2010)
Conceptual and numerical models of solute diffusion and hydrochemical
processes around a HLW repository in clay.
Clays in Natural and Engineered barriers for Radioactive Waste
Confinement . ANDRA 4th Int. Meeting, Nantes, 29/3-1/4/10, 161-162.
[communication orale]
abstract

NOGUERA C., CLEMENT A., FRITZ B. (2010)
Account of chemical variability and cationic exchange in the nucleation
and growth of minerals in aqueous solutions.
20th Meeting of the International Mineralogical Association IMA 2010,
Budapest, 23-27/8/10. [communication orale]

FRITZ B., CLEMENT A., NOGUERA C. (2010)
Simulation of the nucleation and growth of clay particles : the code
Nanokin.
20th Meeting of the International Mineralogical Association IMA 2010,
Budapest, 23-27/8/10 [communication orale]

FRITZ B., CLEMENT A., ZWINGMANN H., NOGUERA C. (2010)
Simulation of the long term alteration of clay minerals in engineered
bentonite barriers : nucleation and growth of secondary clay particles.
Clays in Natural and Engineered barriers for Radioactive Waste
Confinement . ANDRA 4th Int. Meeting, Nantes, 29/3-1/4/10, 507-508.
[affiche]
abstract

FRITZ B., NOGUERA C., CLEMENT A., ZWINGMANN H. (2010)
Illite authigenesis - new constrains of Oswald ripening processes using
the NANOKIN code.
AAPG Annual Convention and Exhibition, New Orleans, USA, 11-14/4/10.
[affiche]

FRITZ B., SCHAFFHAUSER T., CLEMENT A., NOGUERA C. (2011)
Formation of secondary clay minerals during weathering of a granitic
rock : a kinetic modeling including nucleation and growth processes.
Euroclay 2011, Antalya, Turquie, 26/6-1/711

FRITZ B., CLEMENT A., NOGUERA C. (2011)
Nucléation et croissance cristalline dans la modélisation de la
formation d’argiles
Colloque annuel du Groupe Français des Argiles (GFA), Paris, 10-12/5/11

Schaffhauser T., CHABAUX F., FRITZ B., AMBROISE B., CLEMENT A., LUCAS
Y. (2012)
Geochemical tracing and modeling of alteration processes in the
Ringelbach granitic research catchment (Vosges, France)
EGU 2012, Wien 23-28 April 2012 (poster)

Schaffhauser T., CHABAUX F., FRITZ B., AMBROISE B., CLEMENT A., LUCAS
Y. (2012)
Modeling of concentrations in major elements of subsurface and deep
waters in the Ringelbach granitic research catchment (Vosges, France).
Goldschmidt Conference 2012, Montreal, Canada, 24-29/06/2012 (poster)

FRITZ B., Delalande M., CLEMENT A., Michau N. (2012)
Coupled transport-reaction modeling of the consequence of long-term
diffusion-reaction in the Callovo-Oxfordian clay (COX) for radioactive
waste confinement.
ANDRA, 5th international meeting, "Clays in Natural and Engineered
barriers for Radioactive Waste Confinement", Montpellier, 21-25 oct.
2012 (Abstract, page 909-910)

FRITZ B., Noguera C., CLEMENT A., Zwingmann H. (2012)
Illite authigenesis - new constraints on fundamental clay
crystallization processes using the NANOKIN code.
Australian Regolith and Clay Conference, Mildura, 7-10 february 2012
(communication presented by H. Zwingmann)

FRITZ B., CLEMENT A., Ngo V. V., Michau N. (2014)
Modélisation numérique des transformations minéralogiques de l’argilite
et comparaison aux résultats expérimentaux.
Journées de clôture du GL-VFA Andra, Paris, 27-28 mai 2014.

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