Evaluation of a novel correction procedure to remove electrode impedance effects from broadband SIP measurements

Huisman, Johan Alexander; Zimmermann, Egon; Esser, Odilia; Haegel, Franz‐Hubert; Treichel, Andrea; Vereecken, Harry

doi:10.1016/j.jappgeo.2015.11.008

Cited by 38 publications

(34 citation statements)

References 26 publications

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“…With progressing drainage, the difference in thickness between the water films in the grain contact area and around the particles decreases, therefore, both the magnitude and phase of σ * (ω) decrease. The increase of σ″(ω) and ϕ(ω) for frequencies above 100 Hz is related to the increasing contact impedance of the potential electrodes with decreasing saturation (Huisman et al, 2016), and to Maxwell–Wagner polarization of the porous media (Breede et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Spectral Induced Polarization of Biochar in Variably Saturated Soil

Gao

Haegel

Esser

et al. 2019

Vadose Zone Journal

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Core Ideas Water retention and spectral induced polarization were measured for biochar in sand. Water retention curves could be fitted by using a dual porosity model. Residual water content was found to increase with the addition of biochar. The polarization of sand–biochar mixtures was much larger than that for sand. Spectral induced polarization may be suitable for monitoring biochar in the field. Biochar is considered a promising soil amendment, but an effective method to detect and characterize the spatial distribution and temporal dynamics of biochar in soil is still missing. The aim of this study is to investigate the ability of the spectral induced polarization (SIP) method for the noninvasive detection of biochar in unsaturated sandy media. In particular, a pure sand and two sand–biochar mixtures with 1 and 2% biochar made from pine (Pinus spp.) wood by pyrolysis at 800°C were investigated. The measured SIP spectra as a function of saturation were interpreted by fitting a Cole–Cole model to the low‐frequency part of the SIP measurements. The porous nature of the biochar particles strongly affected the SIP response of the partially saturated sand–biochar mixtures. Due to the high residual water content of the biochar in a dry background, the relationship between bulk electrical conductivity and water saturation was nonlinear in a log–log representation. This nonlinear behavior could adequately be explained with a dielectric mixing model that considered the drainage of the biochar particles. Both the measured phase and chargeability of the sand–biochar mixtures showed a complex dependence on water saturation. This was attributed to the decrease in polarization strength of the biochar particles with desaturation and the simultaneous increase in phase of the sand background. Overall, the results of this study suggest that field SIP measurements may be a promising tool for the characterization and monitoring of biochar amendments to agricultural soils.

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Section: Resultsmentioning

confidence: 99%

Spectral Induced Polarization of Biochar in Variably Saturated Soil

Gao

Haegel

Esser

et al. 2019

Vadose Zone Journal

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“…In the following section, we will use our mechanistic Stern layer polarization model to get information on the evolution of the size and shape of precipitating calcite particles and to describe the electrochemical properties of the calcite/water interface responsible for the measured spectral induced polarization response. It should be noted that the SIP measurements of Wu et al (2010) may present significant uncertainties in the high frequency range [1000−10 000 Hz] because measured voltage was not corrected of impedances for potential electrodes (Huisman et al 2015).…”

Section: Bsm Of the Calcite/water Interfacementioning

confidence: 99%

“…Polarization of oxides and carbonates minerals such as calcite is related to the polarization of the electrical double layer (EDL) surrounding the particles under an external alternating current or electrical field (Chelidze & Gueguen 1999;Jougnot et al 2010;Revil & Florsch 2010). When a sinusoidal current at a range of frequencies is applied to the charged porous medium and the resulting difference of electrical potential is measured, complex conductivity is referred to as spectral induced 124 P. Leroy et al polarization (SIP) (Collet 1990;Weller & Borner 1996;Luo & Zhang 1998;Huisman et al 2015).…”

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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“…Due to the small contact area between the potential electrodes and the sample in the ZEL‐SIP04‐V02 system, a correction procedure to remove electrode impedance effects above 100 Hz was applied (Huisman et al . ). In the following, the samples analysed with the system ZEL‐SIP04‐V02 are identified by the letter j in the ID code.…”

Section: Methodsmentioning

confidence: 97%

Estimation of sediment texture from spectral induced polarisation data using cluster and principal component analysis

Inzoli

Giudici

Huisman

2016

Near Surface Geophysics

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Spectral induced polarisation data are usually interpreted with simple models in order to derive petrophysical relationships between electrical and sedimentological properties, such as texture, clay content, and permeability. The aim of this work is to explore the value of spectral induced polarisation in addition to conventional direct‐current resistivity measurements for determining textural properties of saturated samples collected from alluvial deposits. For this, an advanced data processing approach that combines cluster and principal component analysis was developed and applied to integral parameters derived from Debye decomposition of spectral induced polarisation data. This data processing procedure allowed identifying groups of samples with a similar spectral induced polarisation response and to derive a characteristic grain‐size distribution for each group of samples. The method to estimate the grain‐size distribution from spectral induced polarisation data was successfully validated using independent sediment samples. The remaining uncertainty in the estimation of sediment texture from spectral induced polarisation data was attributed to the effect of pore size distribution and mineralogy, which were not considered in the present work but can be added in the future within the same conceptual workflow.

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Evaluation of a novel correction procedure to remove electrode impedance effects from broadband SIP measurements

Cited by 38 publications

References 26 publications

Spectral Induced Polarization of Biochar in Variably Saturated Soil

Spectral Induced Polarization of Biochar in Variably Saturated Soil

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

Estimation of sediment texture from spectral induced polarisation data using cluster and principal component analysis

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