Geophysics at the interface: Response of geophysical properties to solid-fluid, fluid-fluid, and solid-solid interfaces

Knight, Rosemary; Pyrak‐Nolte, L. J.; Slater, Lee; Atekwana, Estella A.; Endres, Anthony L.; Geller, Jil T.; Lesmes, David; Nakagawa, Seiji; Revil, A.; Sharma, Mukul M.; Straley, Christian

doi:10.1029/2007rg000242

Cited by 44 publications

(33 citation statements)

References 128 publications

(179 reference statements)

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“…In recent years there is a growing interest in using geophysical methods in general, and geoelectrical methods in particular in detecting and monitoring organic contamination in the subsurface [e.g., Vanhala et al , 1992; Borner et al , 1993; Atekwana et al , 2000; Aal et al , 2006; Kaufmann and Deceuster , 2007; Cassiani et al , 2009; Schmutz et al , 2012; Schwartz et al , 2012]. Of these methods, the spectral induced polarization (SIP) is a promising method as it is sensitive to both pore fluid content and characteristics, and to mineral‐fluid interfaces and their chemical composition [ Jougnot et al , 2010; Knight et al , 2010]. The general idea with the SIP method is to inject an alternating current through two electrodes and to measure the resultant potential between two other electrodes located along the current path.…”

Section: Introductionmentioning

confidence: 99%

Spectral induced polarization signature of soil contaminated by organic pollutant: Experiment and modeling

Schwartz

Furman

2012

J. Geophys. Res.

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[1] The spectral induced polarization (SIP) signature of soil contaminated with organic pollutant was studied. Using a flow column experiment, the effect of crystal violet (CV, a polar organic pollutant) on the temporal change of the SIP response over a broad frequency range (1 mHz to 45 KHz) was determined. Complimentary measurements were used to determine the effect of CV on the chemical composition of both the pore water and the solid surface. In addition, analysis of the experimental results was carried out by using both chemical complexation and induced polarization models. Our results shows that adsorption of CV to the mineral surface resulted in release of inorganic ions to the soil solution, increasing the solution electrical conductivity and therefore also the real part of the complex conductivity. Despite the increase in the real part of the complex conductivity, the imaginary part of the complex conductivity decreased with increasing concentration of adsorbed CV. Using the Revil induced polarization model, we were able to show that the contribution of the adsorbed CV to the polarization of the soil is negligible, and that the main process affecting the polarization is the decrease in the density of the inorganic surface species. The results of this study can be used to better interpret SIP signature of soils contaminated by organic compounds.

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Section: Introductionmentioning

confidence: 99%

Spectral induced polarization signature of soil contaminated by organic pollutant: Experiment and modeling

Schwartz

Furman

2012

J. Geophys. Res.

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“…The geochemical monitoring suggested that the primary mode of interaction between biochar and OMW is adsorption, a process that is expected to alter the surface properties of biochar and consequently the imaginary component of complex conductivity (Lesmes and Frye ; Knight et al . ; Kemna et al . ) (Figs and ).…”

Section: Resultsmentioning

confidence: 99%

Preliminary assessment on the application of biochar and spectral‐induced polarization for wastewater treatment

Kirmizakis

Kalderis

Ntarlagiannis

et al. 2019

Near Surface Geophysics

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In this work, we explore the use of biochar as a remediation agent, and the sensitivity of the spectral‐induced polarization method as a remediation monitoring aid. Biochar amended columns were fully saturated with industrial wastewater (olive oil mill waste) with very high concentration of phenols (∼2485 mg/L) and other substances. The biochar‐amended columns achieved very high removal rates of phenols compared to the control (sand only). Geophysical monitoring over the duration of the experiment (10 days) showed changes in the spectral‐induced polarization signal (imaginary conductivity) consistent with phenol removal as confirmed by geochemical monitoring. This experiment confirmed the utility of biochar as a remediation agent. Furthermore, spectral‐induced polarization can serve as long‐term, high resolution, monitoring aid in organic contaminant degradation processes.

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“…; Muller et al . ). Wavelength scale flow occurs between peaks and troughs of the seismic wave; mesoscale WIFF occurs between lithological layers, inclusions and in‐homogeneities; while pore‐size scale flow occurs between adjacent pores of different compliances, such as matrix and cracks (Pride et al .…”

Section: Introductionmentioning

confidence: 97%

Contact line friction and surface tension effects on seismic attenuation and effective bulk moduli in rock with a partially saturated crack

Rozhko

Bauer

2018

Geophysical Prospecting

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The effect of surface phenomena occurring at the interfaces between immiscible fluids and a solid on the seismic attributes of partially saturated rocks has not yet been fully studied. Meanwhile, over the past two decades considerable progress has been made in the physics of wetting to understand effects such as contact line friction, contact line pinning, contact angle hysteresis, and equilibrium contact angle. In this paper, we developed a new rock physics model considering the aforementioned effects on seismic properties of the rock with a partially saturated plane‐strain crack. We demonstrated that for small wave‐induced stress perturbations, the contact line of the interface meniscus will remain pinned, while the meniscus will bulge and change its shape through the change of the contact angles. When the stress perturbation is larger than a critical value, the contact line will move with advancing or receding contact angle depending on the direction of contact line motion. A critical stress perturbation predicted by our model can be in the range of ∼102−104 Pa, that is typical for linear seismic waves. Our model predicts strong seismic attenuation in the case when the contact line is moving. When the contact line is pinned, the attenuation is negligibly small. Seismic attenuation is associated with the hysteresis of loading and unloading bulk moduli, predicted by our model. The hysteresis is large when the contact line is moving and negligibly small when the contact line is pinned. Furthermore, we demonstrate that the bulk modulus of the rock with a partially saturated crack depends also on the surface tension and on the contact angle hysteresis. These parameters are typically neglected during calculation of the effecting fluid moduli by applying different averaging techniques. We demonstrate that contact line friction may be a dominant seismic attenuation mechanism in the low frequency limit (<∼10 Hz) when capillary forces dominate over viscous forces during wave‐induced two‐phase fluid flow.

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Geophysics at the interface: Response of geophysical properties to solid-fluid, fluid-fluid, and solid-solid interfaces

Cited by 44 publications

References 128 publications

Spectral induced polarization signature of soil contaminated by organic pollutant: Experiment and modeling

Spectral induced polarization signature of soil contaminated by organic pollutant: Experiment and modeling

Preliminary assessment on the application of biochar and spectral‐induced polarization for wastewater treatment

Contact line friction and surface tension effects on seismic attenuation and effective bulk moduli in rock with a partially saturated crack

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