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Christophe Tournassat

Researcher at Centre national de la recherche scientifique

Publications -  96
Citations -  5226

Christophe Tournassat is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Clay minerals & Montmorillonite. The author has an hindex of 39, co-authored 87 publications receiving 4621 citations. Previous affiliations of Christophe Tournassat include Joseph Fourier University & University of Grenoble.

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Journal ArticleDOI

Surface complexation of ferrous iron and carbonate on ferrihydrite and the mobilization of arsenic.

C. A. J. Appelo, +3 more
- 11 Jun 2002 - 
TL;DR: Model calculations confirm that sorption of particularly carbonate at common soil and groundwater concentrations reduces the sorption capacity of arsenic on ferrihydrite significantly, a cause for the high concentrations of arsenic in groundwater in Bangladesh.
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Arsenic(III) oxidation by birnessite and precipitation of manganese(II) arsenate.

Christophe Tournassat, +3 more
- 04 Jan 2002 - 
TL;DR: The oxidation reaction transforms a toxic species, As(III), to a less toxic aqueous species, which further precipitates with Mn2+ as a mixed As-Mn solid characterized by a low solubility product.
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A robust model for pore-water chemistry of clayrock

Eric C. Gaucher, +6 more
- 01 Nov 2009 - 
TL;DR: In this paper, an approach for calculating the pore-water compositions of clayrocks from laboratory-measured properties of core samples, including their leachable Cl and SO4 concentrations and analysed exchangeable cations, and from mineral and cation exchange equilibria based on the formation mineralogy is presented.
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Electron transfer at the mineral/water interface: Selenium reduction by ferrous iron sorbed on clay

Laurent Charlet, +8 more
- 01 Dec 2007 - 
TL;DR: In this article, the authors investigated the long-term kinetics of selenite ( Se(IV)O 3 - ) sorption to montmorillonite in the presence of Fe2+ under anoxic conditions.
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Nanomorphology of montmorillonite particles: Estimation of the clay edge sorption site density by low-pressure gas adsorption and AFM observations

Christophe Tournassat, +5 more
- 01 Nov 2003 - 
TL;DR: In this paper, a discrepancy between measurements of the basal and interlayer surface area was found due to the stacking of platelets in dry conditions compared to their dispersion in aqueous suspension.