Electro-Reclamation: State-of-the-Art and Future Developments

Lageman, Reinout; Pool, Wieberen; Seffinga, Geert A.

doi:10.1007/978-94-011-3270-1_239

Cited by 10 publications

(2 citation statements)

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“…Several laboratory experiments and some field scale pilot studies have demonstrated promising removal efficiencies of various chemical species from clay soils (Acar and Alshawabkeh 1996;Acar et al 1994;Hamed et al 1991;Lageman 1993;Lageman et al 1990;Pamukcu and Wittle 1992;Reddy and Saichek 2004;Reddy and Shirani 1997;Shariatmadari et al 2001). More recent studies have proved the versatility and effectiveness of this technique in practice as a viable in situ soil remediation and treatment method.…”

Section: Electrokinetic Soil Treatmentmentioning

confidence: 94%

Modification of the properties of salt affected soils using electrochemical treatments

Jayasekera

Hall

2006

Geotech Geol Eng

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In this project, an in situ soil treatment technique using the principles of electrokinetics was tested using laboratory experimental models in order to identify the potential of this approach in modifying and reinstating the physical properties of salt affected soils. Experiments were conducted in the laboratory using saline-sodic soils collected from two salt affected regions in central Victoria, Australia. Soil specimens were compacted in glass tanks to reproduce in situ density and in situ water content. Using mild steel electrodes inserted into the soil, a direct current was passed through the soil under a constant potential gradient of 0.5 V/cm for a period of 14 days. In separate experiments, distilled water and a saturated lime solution were introduced to the soil via the anode over this experimental period. It was observed that the soil dispersion, otherwise known as soil sodicity (measured as ESP-Exchangeable Sodium Percentage and SAR-Sodium Absorption Ratio) decreased by up to 90% in most regions of the soil between the electrodes. The compressive strength of the soil increased in excess of 100% with electrokinetic treatment alone while the lime-enhanced electrokinetic treatment led to an almost 200% strength increase. The liquid limit and plastic limit of the soil increased causing the plasticity index to decrease, indicating increases in soil compressive strength and workability. These results indicate the potential of this technique for improving the physical properties of salt affected soils both effectively and efficiently, and in particular gives hope for the remediation of salt affected land for infrastructure management and development.

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Section: Electrokinetic Soil Treatmentmentioning

confidence: 94%

Modification of the properties of salt affected soils using electrochemical treatments

Jayasekera

Hall

2006

Geotech Geol Eng

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“…Thus, it has been observed in field applications that yields depend on the physicochemical and biological characteristics of the soil. Electrokinetic studies have shown successful results in soil decontamination (16)(17)(18)(19)(20)(21). Traditionally the technique is based on the application of an electrical disturbance between electrodes inserted in the contaminated medium.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Transport Number of Cadmium and Lead from an Extract of Soils Contaminated with Mining Seals through a Commercial Membrane

Rodríguez¹,

Vera²,

Montalvo³

et al. 2021

ECS Trans.

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The historical contamination of soils by heavy metals shows little degradation and therefore they are considered as persistent bioaccumulative toxins, which represent a marked risk to human health ecosystems. In recent years, technologies have been developed to help alleviate the problem of contaminated soils. The methods developed have mainly focused on in situ remediation, among which electro remediation stands out for both organic and inorganic pollutants. The present work aims to analyze variables for the treatment of soils with heavy metals using electrochemical strategies with the application of commercial membranes. The analysis made it possible to determine the transition zone where the depletion of the counterion occurs in the diffusion layer of the cadmium and lead ion. The results of the limit current analysis in the membrane reflect the presence of a mixture of ions where the diffusion layer is altered by the mixture of ions present. The results suggest that the membrane presents fouling of complexing organic compounds in the diffusion layer and therefore behaves like a reactive membrane where the permeation channels and the fixed charge change their original function.

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Contaminated and polluted land: A general review of decontamination management and control

Tadesse¹,

Donaldson²,

Grimes³

1994

J of Chemical Tech & Biotech

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Electro-Reclamation: State-of-the-Art and Future Developments

Cited by 10 publications

References 0 publications

Modification of the properties of salt affected soils using electrochemical treatments

Modification of the properties of salt affected soils using electrochemical treatments

Analysis of the Transport Number of Cadmium and Lead from an Extract of Soils Contaminated with Mining Seals through a Commercial Membrane

Contaminated and polluted land: A general review of decontamination management and control

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