A surface complexation model of the carbonate mineral-aqueous solution interface

Cappellen, Philippe Van; Charlet, Laurent; Stumm, Werner; Wersin, Paul

doi:10.1016/0016-7037(93)90135-j

Cited by 503 publications

(379 citation statements)

References 36 publications

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“…Heberling et al [10] assumed that the calcite surface functional groups are controlled by the A geochemical code written in Matlab was developed to compute the surface complexation model of Heberling et al [10] (see Appendix B). The program combines aqueous complexation, surface complexation equilibria, surface charge density and mass balance conditions [11,60].…”

Section: Calcite Surface Complexation Modelmentioning

confidence: 99%

“…In Table 1, the formation of the species i from the components j (solution, surface and electrostatic components) can be described using the mass action law, which is written as [11,60]: …”

Section: Appendix Bmentioning

confidence: 99%

“…These applications include waste water purification [3], nuclear waste and CO 2 sequestration in geological formations [4][5][6], oil extraction [7], biomineralization [8], and cement and paper production [9,10]. Furthermore, heavy metals and other contaminants can be adsorbed at calcite surface and be incorporated into the calcite crystal structure [11,12]. Adsorption/desorption, dissolution, and precipitation phenomena at the calcite surface can be described by an electrostatic surface complexation model computing the behavior of the electrical double layer (EDL) at the calcite-water interface [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…For that reason, electrokinetic experiments like electrophoresis or streaming potential are commonly performed to obtain reliable information on the structure of the calcite EDL [8,11]. The streaming potential method is often used to characterize the electrochemical properties of calcite powders [9,13].…”

Section: Introductionmentioning

confidence: 99%

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Influence of surface conductivity on the apparent zeta potential of calcite

Leroy

Heberling

et al. 2016

Journal of Colloid and Interface Science

114

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Zeta potential is a physicochemical parameter of particular importance in describing the surface electrical properties of charged porous media. However, the zeta potential of calcite is still poorly known because of the difficulty to interpret streaming potential experiments. The HelmholtzSmoluchowski (HS) equation is widely used to estimate the apparent zeta potential from these experiments. However, this equation neglects the influence of surface conductivity on streaming potential. We present streaming potential and electrical conductivity measurements on a calcite powder in contact with an aqueous NaCl electrolyte. Our streaming potential model corrects the apparent zeta potential of calcite by accounting for the influence of surface conductivity and flow regime. We show that the HS equation seriously underestimates the zeta potential of calcite, particularly when the electrolyte is diluted (ionic strength ≤0.01 M) because of calcite surface conductivity. The basic Stern model successfully predicted the corrected zeta potential by assuming that the zeta potential is located at the outer Helmholtz plane, i.e. without considering a stagnant diffuse layer at the calcite-water interface. The surface conductivity of calcite crystals was inferred from electrical conductivity measurements and computed using our basic Stern model. Surface conductivity was also successfully predicted by our surface complexation model.

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Section: Calcite Surface Complexation Modelmentioning

confidence: 99%

“…In Table 1, the formation of the species i from the components j (solution, surface and electrostatic components) can be described using the mass action law, which is written as [11,60]: …”

Section: Appendix Bmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of surface conductivity on the apparent zeta potential of calcite

Leroy

Heberling

et al. 2016

Journal of Colloid and Interface Science

114

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“…Calcite is one of the most abundant minerals in the Earth's crust and frequently precipitates when pH and alkalinity increase (Vancappellen et al 1993;Stipp 1999). Calcite precipitation modifies the rock porosity, and can have either benefits or side effects for the mechanical and transport properties of porous media.…”

Section: Introductionmentioning

confidence: 99%

Modeling the evolution of complex conductivity during calcite precipitation on glass beads

Leroy

Li²,

Jougnot

et al. 2017

Geophys. J. Int.

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S U M M A R YWhen pH and alkalinity increase, calcite frequently precipitates and hence modifies the petrophysical properties of porous media. The complex conductivity method can be used to directly monitor calcite precipitation in porous media because it is sensitive to the evolution of the mineralogy, pore structure and its connectivity. We have developed a mechanistic grain polarization model considering the electrochemical polarization of the Stern and diffuse layers surrounding calcite particles. Our complex conductivity model depends on the surface charge density of the Stern layer and on the electrical potential at the onset of the diffuse layer, which are computed using a basic Stern model of the calcite/water interface. The complex conductivity measurements of Wu et al. on a column packed with glass beads where calcite precipitation occurs are reproduced by our surface complexation and complex conductivity models. The evolution of the size and shape of calcite particles during the calcite precipitation experiment is estimated by our complex conductivity model. At the early stage of the calcite precipitation experiment, modelled particles sizes increase and calcite particles flatten with time because calcite crystals nucleate at the surface of glass beads and grow into larger calcite grains. At the later stage of the calcite precipitation experiment, modelled sizes and cementation exponents of calcite particles decrease with time because large calcite grains aggregate over multiple glass beads and only small calcite crystals polarize.

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Boron Systematics

2019

Boron Proxies in Paleoceanography and Paleoclimatology

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A surface complexation model of the carbonate mineral-aqueous solution interface

Cited by 503 publications

References 36 publications

Influence of surface conductivity on the apparent zeta potential of calcite

Influence of surface conductivity on the apparent zeta potential of calcite

Modeling the evolution of complex conductivity during calcite precipitation on glass beads

Boron Systematics

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