Electrical resistivity methods to characterize the moisture content in Brazilian sanitary landfill

Aranda, Nataly; Elis, Vagner Roberto; Prado, Renato Luiz; Miguel, Miriam Gonçalves; Leme, Mariane Alves de Godoy; Conicelli, Bruno; Guzmán, Oswaldo

doi:10.1007/s10661-021-09050-w

Cited by 6 publications

(5 citation statements)

References 24 publications

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“…Many factors affect the electrical resistivity ( ρ ), or its inverse the electrical conductivity ( σ ), including the conductive or resistive nature of solids; the conductive leachate generated due to biodegradation and rainwater infiltration; and the presence of voids which are related to the fluid saturation and current flow paths (i.e., the degree of saturation increases as the porosity decreases, leading to more current flow paths and low resistivity values) (Grellier et al 2007 ; Carpenter et al 2013 ). Some studies converted electrical resistivity profiles into moisture content profiles using a simplification of the empirical equation developed by Archie ( 1942 ), assuming that the current is predominantly transported by the pore fluid (Grellier et al 2007 ; Mondelli et al 2010 ; Dumont et al 2016 ; Feng et al 2017a , b ; Hu et al 2019 ; Neyamadpour 2019 ; Aranda et al 2021 ). Grellier ( 2005 ) showed through laboratory measurements that Archie’s law can be described as follows in Eq.…”

Section: Resultsmentioning

confidence: 99%

“…2 were calculated from experimental data for leachate and waste samples collected from the test locations. Dumont et al ( 2016 ), Neyamadpour ( 2019 ), and Aranda et al ( 2021 ) also incorporated the effect of temperature verified by Grellier ( 2005 ), which consists of an increase of approximately 2% in the electrical conductivity for every additional temperature degree, as shown in Eq. 9 : where σ Tref is the electrical conductivity corrected at the reference temperature, T is the measured temperature, T ref is the reference temperature, c is 0.02 when T ref is 25 °C.…”

Section: Resultsmentioning

confidence: 99%

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An overview of in situ testing and geophysical methods to investigate municipal solid waste landfills

Juarez

Mondelli

Giacheti

2023

Environ Sci Pollut Res

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Municipal solid waste (MSW) management is challenging as a whole. Global waste generation is expected to continue to increase in the coming years, and landfills are currently the primary destination. Therefore, the stability of these structures must be carefully evaluated to prevent failures and associated health and pollution risks, which implies the determination of waste properties using more reliable approaches. This paper presents a scoping review of field data from MSW landfills and outlines suggestions for future work. Studies published in the past twenty years were selected following a systematic search process in databases. Aspects discussed include (1) strength parameters and soil behavior type from in situ testing, (2) elastic moduli from seismic wave propagation, and (3) moisture content from geoelectrical measurements. Although the values of geotechnical parameters have varied due to waste heterogeneity and applied methods, the trends observed with depth and age could be compared. Research opportunities involve the spatial analysis of mechanical properties at a given site, seismic response of landfills with high organic content and saturation degree, interpretation of long-term resistivity monitoring, and combination of electrical properties to assess the degradation stages within the waste mass.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

An overview of in situ testing and geophysical methods to investigate municipal solid waste landfills

Juarez

Mondelli

Giacheti

2023

Environ Sci Pollut Res

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“…As discussed above, low resistivity features typically correlate to high moisture levels. Moisture tends to sink to the bottom of the dumpsite due to gravity [38] and thus appears as a conductive area in the ERI model.…”

Section: Resistivity Models From Forward Modelingmentioning

confidence: 99%

Evaluation of the Proper Electrode Spacing for ERI Surveys in Open Dumpsites Using Forward Modeling

Chungam¹,

Vinitnantharat²,

Wangyao³

2022

Pol. J. Environ. Stud.

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Electrical resistivity imaging surveys are widely conducted in waste disposal sites due to their ease of operation and accurate results; however, some essential measurement parameters, such as optimal electrode spacing, have not been thoroughly evaluated. Accordingly, this study aims to identify the optimal electrode spacing for electrical resistivity surveys in open dumpsites. An electrical resistivity survey was conducted at the Nonthaburi disposal site, Thailand, and the results were compared to synthetic cases simulated using the forward modeling technique. Electrode spacing values of 2, 2.5, 4, and 5 m were used. The models were evaluated using the Nash-Sutcliffe model efficiency coefficient, model sensitivity, and root mean square error. The real case survey results illustrate that small electrode spacings of 2 and 2.5 m provide a realistic model, however, the root mean square error is higher due to the use of more outlier electrodes during measurement. Consistent with the synthetic case studies, electrode spacing values of 2 and 2.5 m yielded accurate inverted models. Overall, this study illustrates the benefits of using a forward modeling technique for selecting the optimal electrode spacing for open dumpsite surveys.

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“…According to the literature, this soil type can also be used as filler in tropical regions' construction projects [10]. The presence of water is one of the significant factors that affect resistivity [1,[11][12][13]. The various properties that affect the electrical resistivity of soils are water content, porosity, grain size distribution, degree of saturation, salinity, temperature, and pore fluid chemistry.…”

Section: Introductionmentioning

confidence: 99%

Behavior of electrical resistivity against different soil properties

Sahito

Bazuhair

2023

Mehran Univ. res. j. eng. technol.

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Any construction must be designed and built after the subsurface soil has been determined. The subsurface qualities of the soil are rendered by expensive, time-consuming, and risky operations, which on the other hand, raise the project's capital expenditure while also getting the engineering properties of distinct soil materials. Standard sampling techniques for boreholes are used for the assessment of the engineering properties of soil. But it is pretty costly, intrusive, and takes too much time. Therefore, a different method of determining the subsurface soil parameters is required. An alternate strategy for borehole sampling is to use geo-electrical techniques, such as electrical resistivity (ER). This research aims to ascertain the relationship between the electrical resistivity of various soils and their engineering characteristics. Without using the borehole sample method, appropriate correlations will aid in determining the subsurface soil parameters. Good correlations are obtained for the relationship of electrical resistivity against friction angle, cohesion and moisture content with an R2 value of 0.79, 0.41 and 0.66, respectively. The correlation of resistivity with unit weight showed a weak relationship due to typical soil behavior.

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Electrical resistivity methods to characterize the moisture content in Brazilian sanitary landfill

Cited by 6 publications

References 24 publications

An overview of in situ testing and geophysical methods to investigate municipal solid waste landfills

An overview of in situ testing and geophysical methods to investigate municipal solid waste landfills

Evaluation of the Proper Electrode Spacing for ERI Surveys in Open Dumpsites Using Forward Modeling

Behavior of electrical resistivity against different soil properties

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