Electrical resistance heating of volatile organic compounds in Sedimentary rock

Kluger, Mark; Beyke, Gregory L.

doi:10.1002/rem.20262

Cited by 8 publications

(5 citation statements)

References 2 publications

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“…After operating for 148 d, the average temperature reached 100 °C and the TCE concentrations were reduced up to 99.7% within the treatment zone (Heron et al ). Kluger and Beyke () showed that the same heating rate was achieved for the cemented sandstone layer and the soil layer at a site in Annapolis, Indiana, using ERH method. They also reported remediation of a fractured limestone bedrock contaminated with CVOCs (TCE is the dominant contaminant) using ERH method at a site in Greensburg, Indiana (Kluger and Beyke ).…”

Section: Introductionmentioning

confidence: 83%

“…Kluger and Beyke () showed that the same heating rate was achieved for the cemented sandstone layer and the soil layer at a site in Annapolis, Indiana, using ERH method. They also reported remediation of a fractured limestone bedrock contaminated with CVOCs (TCE is the dominant contaminant) using ERH method at a site in Greensburg, Indiana (Kluger and Beyke ). After more than 5 months of operation, the CVOC concentrations at the site were decreased by 95% (Kluger and Beyke ).…”

Section: Introductionmentioning

confidence: 83%

“…They also reported remediation of a fractured limestone bedrock contaminated with CVOCs (TCE is the dominant contaminant) using ERH method at a site in Greensburg, Indiana (Kluger and Beyke ). After more than 5 months of operation, the CVOC concentrations at the site were decreased by 95% (Kluger and Beyke ).…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of Thermal Remediation in 3D Field‐Scale Fractured Geologic Media

2014

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Thermal methods are promising for remediating fractured geologic media contaminated with volatile organic compounds, and the success of this process depends on the coupled heat transfer, multiphase flow, and thermodynamics. This study analyzed field-scale removal of trichloroethylene (TCE) and heat transfer behavior in boiling fractured geologic media using the multiple interacting continua method. This method can resolve local gradients in the matrix and is less computationally demanding than alternative methods like discrete fracture-matrix models. A 2D axisymmetric model was used to simulate a single element of symmetry in a repeated pattern of extraction wells inside a large heated zone and evaluate effects of parameter sensitivity on contaminant recovery. The results showed that the removal of TCE increased with matrix permeability, and the removal rate was more sensitive to matrix permeability than any other parameter. Increasing fracture density promoted TCE removal, especially when the matrix permeability was low (e.g., <10(-17) m(2)). A 3D model was used to simulate an entire treatment zone and the surrounding groundwater in fractured material, with the interaction between them being considered. Boiling was initiated in the center of the upper part of the heated region and expanded toward the boundaries. This boiling process resulted in a large increase in the TCE removal rate and spread of TCE to the vadose zone and the peripheries of the heated zone. The incorporation of extraction wells helped control the contaminant from migrating to far regions. After 22 d, more than 99.3% of TCE mass was recovered in the simulation.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 83%

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Numerical Analysis of Thermal Remediation in 3D Field‐Scale Fractured Geologic Media

2014

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“…Recently, ERH has been used to treat contaminated sedimentary bedrocks, and fi eld trials were held in Maryland, New Jersey and Indiana (Kluger and Beykle 2010 ). In 2006, at Annaolis, Maryland, tetrachloroethylene (TCE) contamination was observed extensively in surface soils.…”

Section: Electrical Resistance Heatingmentioning

confidence: 99%

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

Kuppusamy

Thavamani

Megharaj

et al. 2016

Reviews of Environmental Contamination and Toxicology

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Though several in-situ treatment methods exist to remediate polluted sites, selecting an appropriate site-specific remediation technology is challenging and is critical for successful clean up of polluted sites. Hence, a comprehensive overview of all the available remediation technologies to date is necessary to choose the right technology for an anticipated pollutant. This review has critically evaluated the (i) technological profile of existing in-situ remediation approaches for priority and emerging pollutants, (ii) recent innovative technologies for on-site pollutant remediation, and (iii) current challenges as well as future prospects for developing innovative approaches to enhance the efficacy of remediation at contaminated sites.

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“…Operators use temperature measurements to monitor ERH progress (Kluger and Beyke ), and it has been shown that temperature plateaus are indicative of co‐boiling at a NAPL–water interface. Temperature plateaus have been observed in homogeneous media (DeVoe and Udell ; Burghardt and Kueper ; Hegele and Mumford ; Zhao et al ), and media with moderate permeability contrasts (Martin and Kueper ).…”

Section: Introductionmentioning

confidence: 99%

Electrical Resistance Heating of Clay Layers in Water‐Saturated Sand

Martin¹,

Mumford²,

Kueper³

2016

Groundwater Monitoring Rem

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Electrical resistance heating (ERH) experiments were performed in a two‐dimensional water‐saturated porous medium comprising an electrically conductive, low‐permeability clay lens embedded within a less electrically conductive, higher permeability silica sand. These were compared to experiments performed in homogeneous silica sand. All experiments were performed in the absence of a non‐aqueous phase liquid (NAPL) or dissolved volatile organic compound (VOC). Temperature monitoring showed preferential heating in the clay lens and higher overall heating rates throughout the test cell compared to the homogeneous case. Gas production was localized around the sand–clay interface due to high temperature and low capillary displacement pressure. Above the clay lens, unexpected temperature plateaus were observed, similar to those observed in previous experiments during NAPL–water co‐boiling. A conceptual model based on the consumption of thermal energy as latent heat of vaporization in the highly localized heating and gas production region adjacent to the clay lens is proposed to explain the temperature plateaus. Supporting data is drawn from images of the gas phase and electric current measurements. These results show that the use of co‐boiling plateaus as an indicator of NAPL–water co‐boiling could be misleading during applications of ERH at sites containing electrically conductive, low‐permeability clay lenses embedded within less electrically conductive, higher‐permeability sands.

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Electrical resistance heating of volatile organic compounds in Sedimentary rock

Cited by 8 publications

References 2 publications

Numerical Analysis of Thermal Remediation in 3D Field‐Scale Fractured Geologic Media

Numerical Analysis of Thermal Remediation in 3D Field‐Scale Fractured Geologic Media

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

Electrical Resistance Heating of Clay Layers in Water‐Saturated Sand

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