Characterization of sulphate sorption on Callovo-Oxfordian argillites by batch, column and through-diffusion experiments

Bazer-Bachi, Frédéric; Descostes, Michaël; Tevissen, E.; Meier, Patrick; Grenut, B.; Simonnot, Marie-Odile; Sardin, M.

doi:10.1016/j.pce.2006.01.010

Cited by 26 publications

(17 citation statements)

References 16 publications

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“…We consider the following tracers (i) 22 Na + (data from Melkior et al, 2007), (ii) 36 Cl À , and (iii) 35 SO 4 2À (data from Bazer-Bachi et al, 2007). The core samples used by these authors have been extracted from different locations in the COx formation.…”

Section: Laboratory Experimentsmentioning

confidence: 99%

“…The properties of the core samples are summarized in Table 1. The samples from K100 in Bazer-Bachi et al (2007) corresponds to a endmember of the overall formation in term of clay content and porosity (see Table 1). …”

Section: Laboratory Experimentsmentioning

confidence: 99%

“…Fig. 10 shows the confrontation between the fitted normalized diffusion flux following our model and experimental data from Bazer-Bachi et al (2007). The chloride 36 Cl À is a non-sorbed tracer, so we consider K d = 0 m 3 kg À1 .…”

Section: Diffusion Of 36 CL àmentioning

confidence: 99%

“…We have also simulated the 35 SO 4 2À diffusion data through a clay-rock sample from the EST205-K100 core (Bazer-Bachi et al, 2007). Concerning the sulfate tracer, we took into account ion pairing.…”

Section: Diffusion Of 35 So 4 2àmentioning

confidence: 99%

“…We used the software PHREEQC (version 2) developed by Parkhurst and Appelo (1999) to compute the speciation using the Bazer-Bachi et al (2007) water composition. Table 5 summarizes the major species concentrations.…”

Section: Diffusion Of 35 So 4 2àmentioning

confidence: 99%

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Diffusion of ionic tracers in the Callovo-Oxfordian clay-rock using the Donnan equilibrium model and the formation factor

Jougnot

Revil

Leroy

2009

Geochimica et Cosmochimica Acta

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International audienceThe transient diffusion of cationic and anionic tracers through clay-rocks is usually modeled with parameters like porosity, tortuosity (and/or constrictivity), sorption coefficients, and anionic exclusion. Recently, a new pore scale model has been developed by Revil and Linde [Revil A. and Linde N. (2006) Chemico-electromechanical coupling in microporous media. J. Colloid Interface Sci. 302, 682–694]. This model is based on a volume-averaging approach of the Nernst–Planck equation. The influence of the electrical diffuse layer is accounted for by a generalized Donnan equilibrium model through the whole connected pore space that is valid for a multicomponent electrolyte. This new model can be used to determine the composition of the pore water of the Callovo-Oxfordian clay-rock, the osmotic efficiency of bentonite as a function of salinity, the osmotic pressure, and the streaming potential coupling coefficient of clay-rocks. This pore scale model is used here to model the transient diffusion of ionic tracers ( 22Na+, 36C

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Section: Laboratory Experimentsmentioning

confidence: 99%

Section: Laboratory Experimentsmentioning

confidence: 99%

Section: Diffusion Of 36 CL àmentioning

confidence: 99%

Section: Diffusion Of 35 So 4 2àmentioning

confidence: 99%

Section: Diffusion Of 35 So 4 2àmentioning

confidence: 99%

See 3 more Smart Citations

Diffusion of ionic tracers in the Callovo-Oxfordian clay-rock using the Donnan equilibrium model and the formation factor

Jougnot

Revil

Leroy

2009

Geochimica et Cosmochimica Acta

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Interaction of 3H+ (as HTO) and 36Cl− (as Na36Cl) with crushed granite and corresponding fracture infill material investigated in column experiments

Ştamberg

Palágyi

Videnská

et al. 2013

J Radioanal Nucl Chem

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The transport of 3H+ (as HTO) and 36Cl− (as Na36Cl) was investigated in the dynamic system, i.e., in the columns filled with crushed pure granite and fracture infill of various grain sizes. The aim of column experiments was to determine important transport parameter, such as the retardation, respectively distribution coefficients, Peclet numbers and hydrodynamic dispersion coefficients. Furthermore, the research was focused to quantification of the effect of grain size on migration of studied radionuclides. The experimental breakthrough curves were fitted by a model based on the erfc-function, assuming a linear reversible equilibrium sorption/desorption isotherm, and the above mentioned transport parameters were determined. The results showed that influence of grain size on sorption of 3H+ and 36Cl− was negligible. Retardation and distribution coefficients of both tracers converged to one and zero, respectively, in case of all fractions of crushed granite and infill material. Generally, the presumed ion exclusion of 36Cl in anionic form was proved under given conditions, only very weak one seems to exist in a case of infill material. In principal, both radionuclides behaved as non-sorbing, conservative tracers. On the other hand, the influence of grain size on Peclet numbers value and on dispersion coefficient was observed for both crystalline materials, namely in agreement with theoretical suppositions that the values of Peclet numbers decrease with increasing grain size and values of dispersion coefficient increase.

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Diffusion of anionic species in Callovo-Oxfordian argillites and Oxfordian limestones (Meuse/Haute–Marne, France)

Descostes

Blin

Bazer-Bachi

et al. 2008

Applied Geochemistry

136

106

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Characterization of sulphate sorption on Callovo-Oxfordian argillites by batch, column and through-diffusion experiments

Cited by 26 publications

References 16 publications

Diffusion of ionic tracers in the Callovo-Oxfordian clay-rock using the Donnan equilibrium model and the formation factor

Diffusion of ionic tracers in the Callovo-Oxfordian clay-rock using the Donnan equilibrium model and the formation factor

Interaction of 3H+ (as HTO) and 36Cl− (as Na36Cl) with crushed granite and corresponding fracture infill material investigated in column experiments

Diffusion of anionic species in Callovo-Oxfordian argillites and Oxfordian limestones (Meuse/Haute–Marne, France)

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