Methodology to obtain exchange properties of the calcite surface—Application to major and trace elements: Ca(II), , and Zn(II)

Tertre, Emmanuel; Beaucaire, Catherine; Juery, A.; Ly, J.

doi:10.1016/j.jcis.2010.03.040

Cited by 15 publications

(21 citation statements)

References 37 publications

(71 reference statements)

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“…The trends observed in Zn(II) concentration in the experiments are in good accordance with those observed in many studies (Freij et al, 2005;Tertre et al, 2010;Zachara et al, 1988), as are the amounts of Zn(II) sorbed: whatever the initial conditions of the experiments the strong zinc retention by calcite is evidenced. But another aspect is emphasized here: the role of high salinity on the amount of zinc sorbed.…”

Section: Sorption Of Zn(ii) Mn(ii) and Sr(ii)supporting

confidence: 90%

“…A lot of studies have been carried into the surface behavior of calcite regarding divalent metallic cations to obtain the surface exchange properties of this mineral. At the macro scale, calcite powder equilibrated with water at various salinities is exposed to a given Me(II) concentration, and the evolution of the metal concentration in solution is measured along time or a pH path (Lakshtanov and Stipp, 2007;Tertre et al, 2010;Zachara et al, 1991Zachara et al, , 1988. At the micro scale, spectroscopic, atomic force microscopy and synchrotron investigations are carried out to provide a better mechanistic representation of the processes happening at the calciteliquid interface (Elzinga and Reeder, 2002;Freij et al, 2005;Pokrovsky et al, 2000;Stipp, 1999;Villegas-Jiménez et al, 2009a, b).…”

Section: Introductionmentioning

confidence: 99%

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Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Auffray

García

Lienemann

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-The sorption of inorganic elements on carbonate minerals is well known in strictly controlled conditions which limit the impact of other phenomena such as dissolution and/or precipitation. In this study, we evidence the behavior of Zn(II) (initially in solution) and two trace elements, Mn(II) and Sr(II) (released by carbonate dissolution) in the context of a leakage from a CO 2 storage site. The initial pH chosen are either equal to the pH of the water-CO 2 equilibrium (~2.98) or equal to the pH of the water-CO 2 -calcite system (~4.8) in CO 2 storage conditions. From this initial influx of liquid, saturated or not with respect to calcite, the batch experiments evolve freely to their equilibrium, as it would occur in a natural context after a perturbation. The batch experiments are carried out on two natural carbonates (from Lavoux and St-Emilion) with P CO 2 = 10 À3.5 bar, with different initial conditions ([Zn(II)] i from 10 À4 to 10 À6 M, either with pure water or 100 g/L NaCl brine). The equilibrium regarding calcite dissolution is confirmed in all experiments, while the zinc sorption evidenced does not always correspond to the two-step mechanism described in the literature. A preferential sorption of about 10% of the concentration is evidenced for Mn(II) in aqueous experiments, while Sr(II) is more sorbed in saline conditions. This study also shows that this preferential sorption, depending on the salinity, is independent of the natural carbonate considered. Then, the simulations carried out with PHREEQC show that experiments and simulations match well concerning the equilibrium of dissolution and the sole zinc sorption, with log K Zn(II)~2 in pure water and close to 4 in high salinity conditions. When the simulations were possible, the log K values for Mn(II) and Sr(II) were much different from those in the literature obtained by sorption in controlled conditions. It is shown that a new conceptual model regarding multiple Trace Elements (TE) sorption is required, to enable us to better understand the fate of contaminants in natural systems.

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Section: Sorption Of Zn(ii) Mn(ii) and Sr(ii)supporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Auffray

García

Lienemann

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Despite the same dissolved masses measured, the SSA increases much more for experiments carried out at 90 bar. To our knowledge, this was never reported in the literature, probably due to the fact that all the previous sorption studies were carried out only under atmospheric pressure and strictly controlled conditions to prevent the dissolution from being of major impact on the results (MartinGarin et al, 2003;Tertre et al, 2010;Villegas-Jiménez et al, 2009;Zachara et al, 1988Zachara et al, , 1991.…”

Section: Discussionmentioning

confidence: 89%

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

Auffray

García

Lienemann

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-Some key points still prevent the full development of geological carbon sequestration in underground formations, especially concerning the assessment of the integrity of such storage. Indeed, the consequences of gas injection on chemistry and petrophysical properties are still much discussed in the scientific community, and are still not well known at either laboratory or field scale. In this article, the results of an experimental study about the mobilization of Trace Elements (TE) during CO 2 injection in a reservoir are presented. The experimental conditions range from typical storage formation conditions (90 bar, supercritical CO 2 ) to shallower conditions (60 and 30 bar, CO 2 as gas phase), and consider the dissolution of the two carbonates, coupled with the sorption of an initial concentration of 10 À5 M of Zn(II), and the consequent release in solution of Mn(II) and Sr(II). The investigation goes beyond the sole behavior of TE in the storage conditions: it presents the specific behavior of each element with respect to the pressure and the natural carbonate considered, showing that different equilibrium concentrations are to be expected if a fluid with a given concentration of TE leaks to an upper formation. Even though sorption is evidenced, it does not balance the amount of TE released by the dissolution process. The increase in porosity is clearly evidenced as a linear function of the CO 2 pressure imposed for the St-Emilion carbonate. For the Lavoux carbonate, this trend is not confirmed by the 90 bar experiment. A preferential dissolution of the bigger family of pores from the preexisting porosity is observed in one of the samples (Lavoux carbonate) while the second one (St-Emilion carbonate) presents a newly-formed family of pores. Both reacted samples evidence that the pore network evolves toward a tubular network type.

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“…This near-equilibrium (X ¼ 1:07) enrichment could be due to isotopic exchange, or it could be due to actual carbonate dissolution. Solid-solution exchange has been investigated before, and typically models partition the solid into labile and trapped reservoirs of calcium and carbonate groups on the calcite surface (Badillo-Almaraz and Ly, 2003;Tertre et al, 2010). Using radiolabeled calcium and bicarbonate, Tertre et al (2010) showed immediate (minutes to hours) exchange of the labile solid surface with the solution; after this initial equilibrium was reached, the solid The data from (a) converted to the moles of labeled carbonate dissolved based on Eq.…”

Section: Choice Of Thermodynamic Constantsmentioning

confidence: 99%

A novel determination of calcite dissolution kinetics in seawater

Subhas

Rollins

Berelson

et al. 2015

Geochimica et Cosmochimica Acta

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Methodology to obtain exchange properties of the calcite surface—Application to major and trace elements: Ca(II), , and Zn(II)

Cited by 15 publications

References 37 publications

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

A novel determination of calcite dissolution kinetics in seawater

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Methodology to obtain exchange properties of the calcite surface—Application to major and trace elements: Ca(II), , and Zn(II)

Cited by 15 publications

References 37 publications

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO2Storage Conditions

A novel determination of calcite dissolution kinetics in seawater

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Product

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Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions