Influence of pore fluid chemistry on the complex conductivity and induced polarization responses of Berea sandstone

Lesmes, David; Frye, Kevin M.

doi:10.1029/2000jb900392

Cited by 283 publications

(297 citation statements)

References 47 publications

(45 reference statements)

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“…Our simulations show that the pH effect (1 pH unit in the range 5 -6) upon the phase is a much smaller effect than the effect of ion exchange. This was also experimentally proven by Lesmes and Frye [2001] using a Berea sandstone.…”

Section: Influence Of the Chemistry Near The Relaxation Frequencymentioning

confidence: 86%

Induced polarization signatures of cations exhibiting differential sorption behaviors in saturated sands

Vaudelet

Revil

Schmutz

et al. 2011

Water Resources Research

104

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[1] Two sets of experiments were designed to understand the change in induced polarization associated with the sorption of copper and sodium, exhibiting distinct sorption behavior on a silica sand. A sand column experiment was first performed to see the change in the complex conductivity during the advective transport of a copper sulfate solution. A second set of experiments was done with the sand at equilibrium with various solutions of NaCl and CuSO 4 . In the first experiment, the copper sulfate solution replaced a sodium chloride solution, keeping the electrical conductivity of the solution nearly constant. During the passage of the copper sulfate solution, the apparent phase angle decreased from 3 6 0.2 to 0.5 6 0.2 mrad, while the magnitude of the conductivity of the sand remained nearly constant. A quantitative model is proposed to explain the change in the complex conductivity as a function of the chemistry assuming a polarization mechanism associated with the Stern layer (the inner part of the electrical double layer coating the water-mineral interface). The Stern layer polarization is combined with a complexation model describing the competitive sorption of copper and sodium at the pore water interface. The change of the phase lag is directly associated with the ion exchange between sodium and copper at the surface of the silica grains. The explanation of the observed phase differences between Na and Cu relies on their different complexation behaviors, with Na being loosely absorbed, while Cu forms relatively strong complexation with both inner (monodentate) and outer sphere (bidentate) complexes. The replacement of Cu 2þ by Na þ is less favorable; therefore, the kinetics of such a replacement is much slower than for the opposite replacement (Na þ by Cu 2þ ). We were able to reproduce the changes in the phase lags at thermodynamic equilibrium near the relaxation frequency and in the frequency domain. These measurements and modeling results open the door to the quantitative interpretation of spectral induced polarization data in the field in terms of quantification of the sorption processes.Citation: Vaudelet, P., A. Revil, M. Schmutz, M. Franceschi, and P. Bégassat (2011), Induced polarization signatures of cations exhibiting differential sorption behaviors in saturated sands, Water Resour. Res., 47, W02526,

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Section: Influence Of the Chemistry Near The Relaxation Frequencymentioning

confidence: 86%

Induced polarization signatures of cations exhibiting differential sorption behaviors in saturated sands

Vaudelet

Revil

Schmutz

et al. 2011

Water Resources Research

104

View full text Add to dashboard Cite

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“…Several papers, however, show that the normalized chargeability (i.e. the ratio between chargeability and resistivity) is a better parameter for discriminating lithotypes when compared with chargeability alone (Lesmes and Frye, 2001;Slater and Lesmes, 2002). Despite this we chose to not plot the inversion results in terms of normalized chargeability, but to show the parameters directly used in the inversion process.…”

Section: Discussionmentioning

confidence: 99%

Application of time domain induced polarization to the mapping of lithotypes in a landfill site

Gazoty

Fiandaca

Pedersen

et al. 2012

Hydrol. Earth Syst. Sci.

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Abstract. A direct current (DC) resistivity and time domain induced polarization (TDIP) survey was undertaken at a decommissioned landfill site situated in Hørløkke, Denmark, for the purpose of mapping the waste deposits and to discriminate important geological units that control the hydrology of the surrounding area. It is known that both waste deposits and clay have clear signatures in TDIP data, making it possible to enhance the resolution of geological structures compared to DC surveys alone. Four DC/TDIP profiles were carried out crossing the landfill, and another seven profiles in the surroundings provide a sufficiently dense coverage of the entire area. The whole dataset was inverted using a 1-D laterally constrained inversion scheme, recently implemented for TDIP data, in order to use the entire decay curves for reconstructing the electrical parameters of the soil in terms of the Cole-Cole polarization model. Results show that it is possible to resolve both the geometry of the buried waste body and key geological structures. In particular, it was possible to find a silt/clay lens at depth that correlates with the flow direction of the pollution plume spreading out from the landfill and to map a shallow sandy layer rich in clay that likely has a strong influence on the hydrology of the site. This interpretation of the geophysical findings was constrained by borehole data, in terms of geology and gamma ray logging. The results of this study are important for the impact of the resolved geological units on the hydrology of the area, making it possible to construct more realistic scenarios of the variation of the pollution plume as a function of the climate change.

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“…The two model parameters of most interest here are σ 0 and m n = m × σ 0 , representing global measures of conductivity and interfacial polarization magnitude, respectively (Lesmes and Frye, 2001). We inverted the electrical data using a deterministic algorithm based on a leastsquares approach with Marquardt regularization (Kemna, 2000).…”

Section: Electrical Data Modelingmentioning

confidence: 99%

Calcite precipitation dominates the electrical signatures of zero valent iron columns under simulated field conditions

Versteeg

Slater

et al. 2009

Journal of Contaminant Hydrology

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Calcium carbonate is a secondary mineral precipitate influencing zero valent iron (ZVI) barrier reactivity and hydraulic performance. We conducted column experiments to investigate electrical signatures resulting from concurrent CaCO 3 and iron oxides precipitation under simulated field geochemical conditions. We identified CaCO 3 as a major mineral phase throughout the columns, with magnetite present primarily close to the influent based on XRD analysis. Electrical measurements revealed decreases in conductivity and polarization of both columns, suggesting that electrically insulating CaCO 3 dominates the electrical response despite the presence of electrically conductive iron oxides. SEM/EDX imaging suggests that the electrical signal reflects the geometrical arrangement of the mineral phases. CaCO 3 forms insulating films on ZVI/magnetite surfaces, restricting charge transfer between the pore electrolyte and ZVI particles, as well as across interconnected ZVI particles. As surface reactivity also depends on the ability of the surface to engage in redox reactions via charge transfer, electrical measurements may provide a minimally invasive technology for monitoring reactivity loss due to CaCO 3 precipitation. Comparison between laboratory and field data shows consistent changes in electrical signatures due to iron corrosion and secondary mineral precipitation.

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Influence of pore fluid chemistry on the complex conductivity and induced polarization responses of Berea sandstone

Cited by 283 publications

References 47 publications

Induced polarization signatures of cations exhibiting differential sorption behaviors in saturated sands

Induced polarization signatures of cations exhibiting differential sorption behaviors in saturated sands

Application of time domain induced polarization to the mapping of lithotypes in a landfill site

Calcite precipitation dominates the electrical signatures of zero valent iron columns under simulated field conditions

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