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Icone publications Bibliographie / Publications

DAVAL Damien

Research scientst - CNRS

Contact : ddaval(-at-)unistra.fr
Phone :

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Resume

Research interests

Chemical weathering is one of the main geological processes on Earth responsible for exchanges of energy and matter. To predict the fluxes which take place while such interactions occur, dissolution kinetic rate laws have been built for decades, based on single mineral dissolution experiments, in simplified systems. Whereas the use of such laws is expected to accurately simulate fluid/rock interaction rates at large scales of space and time, most often they can hardly be used to predict the reactivity of silicate minerals in confined environments on time durations as short as a couple of weeks.
My work basically consists in exploring directions which could help to upscale the rates we measure in the lab. It relies on dissolution experiments coupling classical aqueous chemistry analyses (ICP-AES, colorimetry) and innovative techniques of nm- to μm-scale characterization of fluide/solid interfaces (TEM, AFM, VSI). Among my main interests is the desire to link macroscopic dissolution rates to the physicochemical properties of the solid interface.
In addition to a better understanding of the basic mechanisms involved in fluid/rock interactions, this strategy will allow us to produce a more comprehensive and quantitative model of the evolution of the (e.g. textural) properties of surface layers forming on weathered silicates, and of their impact on mineral dissolution rates. Once this evolution is fully parameterized, it will be basically dedicated to be incorporated into reactive transport codes (such as those developed in our lab) classically used to model weathering processes at a large scale.

Publications

12. Hellmann, R., Wirth, R., Daval, D., Barnes, J.-P., Penisson, J.-M., Tisserand, D., Epicier, T., Florin, B., Hervig, R.L. (2012) Unifying natural and laboratory chemical weathering with interfacial dissolution-reprecipitation : A study based on the nanometer-scale chemistry of fluid-silicate interfaces. Chemical Geology 294-295, 203–216. doi:10.1016/j.chemgeo.2011.12.002.

11. Montes-Hernandez, G., Daval, D., Findling, N., Chiriac, R., Renard, F. (2012) Linear growth rate of nanosized calcite synthesized via gas-solid carbonation of Ca(OH)2 particles in a static bed reactor. Chemical Engineering Journal 180, 237–244. doi:10.1016/j.cej.2011.11.020.

10. Daval, D., Sissmann, O., Menguy, N., Saldi, G. D., Guyot, F., Martinez, I., Corvisier, J., Garcia, B., Machouk, I., Knauss, K. G., Hellmann, R. (2011) Influence of amorphous silica layer formation on the dissolution rate of olivine at 90 °C and elevated pCO2. Chemical Geology 284, 193–209. doi:10.1016/j.chemgeo.2011.02.021.

9. Guyot, F., Daval, D., Dupraz, S., Martinez, I., Ménez, B., Sissmann, O. (2011) CO2 geological storage : the environmental mineralogy perspective. Comptes Rendus Geoscience 343, 246–259. doi:10.1016/j.crte.2010.12.007.

8. Montes-Hernandez, G., Daval, D., Chiriac, R., Renard, F. (2010) Growth of nanosized calcite through gas-solid carbonation of nanosized portlandite under anisobaric conditions. Crystal Growth and Design 10, 4823–4830. doi:10.1021/cg100714m.

7. Daval, D., Sissmann, O., Corvisier, J., Garcia, B., Martinez, I., Guyot, F., Hellmann, R. (2010) The effect of silica coatings on the weathering rates of wollastonite (CaSiO3) and forsterite (Mg2SiO4) : an apparent paradox ? Proceedings of the Water-Rock Interaction, P. Birkle and I. Torres-Alvarado (Eds.), 1, 713–716.

6. Daval, D., Testemale, D., Recham, N., Tarascon, J.-M., Siebert, J., Martinez, I., Guyot, F. (2010) Fayalite (Fe2SiO4) dissolution kinetics determined by X-ray absorption spectroscopy. Chemical Geology 275, 161–175. doi:10.1016/j.chemgeo.2010.05.005.

5. Hellmann, R., Daval, D., Tisserand, D. (2010) The dependence of albite feldspar dissolution kinetics on fluid saturation state at acid and basic pH : Progress towards a universal relation. Comptes Rendus Geoscience 342, 676–684. doi:10.1016/j.crte.2009.06.004.

4. Daval, D., Hellmann, R., Corvisier, J., Tisserand, D., Martinez, I., Guyot, F. (2010) Dissolution kinetics of diopside as a function of solution saturation state : macroscopic measurements and implications for modeling of geological storage of CO2. Geochimica et Cosmochimica Acta 74, 2615–2633. doi:10.1016/j.gca.2010.02.003.

3. Daval, D., Martinez, I., Guigner, J.-M., Hellmann, R., Corvisier, J., Findling, N., Dominici, C., Goffé, B., Guyot, F. (2009) Mechanism of wollastonite carbonation deduced from micro- to nanometer length scale observations. American Mineralogist 94, 1707–1726. doi:10.2138/am.2009.3294.

2. Daval, D., Martinez, I., Corvisier, J., Findling, N., Goffé, B., Guyot, F. (2009) Carbonation of Ca-bearing silicates, the case of wollastonite : Experimental investigations and kinetic modelling. Chemical Geology 265, 63–78. doi:10.1016/j.chemgeo.2009.01.022.

1. Hellmann, R., Daval, D., Tisserand, D., Renard, F. (2007) Albite feldspar dissolution kinetics as a function of the Gibbs free energy at high pCO2. Proceedings of the Water-Rock Interaction, T. D. Bullen and Y. Wang (Ed.), 1, 591-595.

Communications

Main external collaborations

Nanometer-scale characterization of fluid/mineral interfaces