Zeta potential of CO2-rich aqueous solutions in contact with intact sandstone sample at temperatures of 23 °C and 40 °C and pressures up to 10.0 MPa

Hidayat, Miftah; Sarmadivaleh, Mohammad; Derksen, J. J.; Vega‐Maza, David; Iglauer, Stefan; Vinogradov, Jan

doi:10.1016/j.jcis.2021.09.076

Cited by 21 publications

(10 citation statements)

References 71 publications

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“…The saturated rock sample was mounted in a core holder made of PEEK, similar to that described in detail by Vinogradov et al [31]. The experimental setup used in this study, including a pair of Ag/AgCl external electrodes used to measure the streaming potential, was the same as the one reported in previous studies by Vinogradov and co-workers (e.g., [33]).…”

Section: Ls Asw Hsmentioning

confidence: 99%

“…Numerous studies have reported zeta potentials measured in sandstones (e.g., [31][32][33]), carbonates (e.g., [34]) and granites [35] in contact with aqueous solutions of varying ionic strength and composition. However, no such measurements have been reported for gneissose rocks, which form large parts of crystalline basement regions, and are the focus of this study.…”

Section: Introductionmentioning

confidence: 99%

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Laboratory Measurements of Zeta Potential in Fractured Lewisian Gneiss: Implications for the Characterization of Flow in Fractured Crystalline Bedrock

et al. 2021

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Despite the broad range of interest and possible applications, the controls on the electric surface charge and the zeta potential of gneiss at conditions relevant to naturally fractured systems remain unreported. There are no published zeta potential measurements conducted in such systems at equilibrium, hence, the effects of composition, concentration and pressure remain unknown. This study reports zeta potential values for the first time measured in a fractured Lewisian gneiss sample saturated with NaCl solutions of various concentrations, artificial seawater and artificial groundwater solutions under equilibrium conditions at confining pressures of 4 MPa and 7 MPa. The constituent minerals of the sample were identified using X-ray diffraction and linked to the concentration and composition dependence of the zeta potential. The results reported in this study demonstrate that the zeta potential remained negative for all tested solutions and concentrations. However, the values of the zeta potential of our Lewisian gneiss sample were found to be unique and dissimilar to pure minerals such as quartz, calcite, mica or feldspar. Moreover, the measured zeta potentials were smaller in magnitude in the experiments with artificial complex solutions compared with those measured with NaCl, thus suggesting that divalent ions (Ca2+, Mg2+ and SO42−) acted as potential determining ions. The zeta potential was also found to be independent of salinity in the NaCl experiments, which is unusual for most reported data. We also investigated the impact of fracture aperture on the electrokinetic response and found that surface electrical conductivity remained negligibly small across the range of the tested confining pressures. Our novel results are an essential first step for interpreting field self-potential (SP) signals and facilitate a way forward for characterization of water flow through fractured basement aquifers.

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Section: Ls Asw Hsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laboratory Measurements of Zeta Potential in Fractured Lewisian Gneiss: Implications for the Characterization of Flow in Fractured Crystalline Bedrock

et al. 2021

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“…Another experimental study has shown that the precipitation of calcite as a secondary mineral phase in quartzcalcite sand has a significant effect on the measured SP voltage [17]. This result is also associated with electrokinetic coupling and can be interpreted as zeta potential changes due to pH evolution, e.g., [18].…”

Section: Introductionmentioning

confidence: 95%

Interpreting Self-Potential Signal during Reactive Transport: Application to Calcite Dissolution and Precipitation

Rembert

Jougnot

Luquot

et al. 2022

Water

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Geochemistry and reactive transport play a critical role in many fields. In particular, calcite dissolution and precipitation are chemical processes occurring ubiquitously in the Earth’s subsurface. Therefore, understanding and quantifying them are necessary for various applications (e.g., water resources, reservoirs, geo-engineering). These fundamental geochemical processes can be monitored using the self-potential (SP) method, which is sensitive to pore space changes, water mineralization, and mineral–solution interactions. However, there is a lack of physics-based models linking geochemical processes to the SP response. Thus, in this study, we develop the first geochemical–geophysical fully coupled multi-species numerical workflow to predict the SP electrochemical response. This workflow is based on reactive transport simulation and the computation of a new expression for the electro-diffusive coupling for multiple ionic species. We apply this workflow to calcite dissolution and precipitation experiments, performed for this study and focused on SP monitoring alternating with sample electrical conductivity (EC) measurements. We carried out this experimental part on a column packed with calcite grains, equipped for multichannel SP and EC monitoring and subjected to alternating dissolution or precipitation conditions. From this combined experimental investigation and numerical analysis, the SP method shows clear responses related to ionic concentration gradients, well reproduced with electro-diffusive simulation, and no measurable electrokinetic coupling. This novel coupled approach allows us to determine and predict the location of the reactive zone. The workflow developed for this study opens new perspectives for SP applications to characterize biogeochemical processes in reactive porous media.

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“…The EDL of quartz is also the source of electrokinetic and geophysical electrical (e.g., self-potential, resistivity, induced polarization) measurements that are used to map for instance geological fluid flows or biogeochemical reactions [7][8][9][10][11][12]. Studying quartz electrochemical properties notably when quartz is in contact with highly saline brines has a high potential in many geo-environmental and engineering applications including geo-sequestration of CO2 in deep saline aquifers, and oil and gas exploration and production notably enhanced hydrocarbon recovery [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The zeta potential of quartz. Surface complexation modelling to elucidate high salinity measurements

Leroy

Maineult

et al. 2022

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Zeta potential of CO2-rich aqueous solutions in contact with intact sandstone sample at temperatures of 23 °C and 40 °C and pressures up to 10.0 MPa

Cited by 21 publications

References 71 publications

Laboratory Measurements of Zeta Potential in Fractured Lewisian Gneiss: Implications for the Characterization of Flow in Fractured Crystalline Bedrock

Laboratory Measurements of Zeta Potential in Fractured Lewisian Gneiss: Implications for the Characterization of Flow in Fractured Crystalline Bedrock

Interpreting Self-Potential Signal during Reactive Transport: Application to Calcite Dissolution and Precipitation

The zeta potential of quartz. Surface complexation modelling to elucidate high salinity measurements

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