Difference between revisions of "Thermal Remediation - Electrical Resistance Heating"

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Thermal Remediation - Electrical Resistance Heating is based on heating by passing alternating current through the subsurface. ERH has gained wide acceptance over the last 20 years for treatment of source zones with volatile organic contaminants. The most common applications have been for relatively shallow [[Chlorinated Solvents | chlorinated solvents]] sites in silt and clay settings. Heating is based on passing electricity through the formation between electrodes, customized to site conditions. ERH can be combined with less aggressive methods for complete site and plume restoration (e.g., see [[Thermal Remediation - Combined Remedies]]).
+
Electrical Resistance Heating (ERH) utilizes heating produced by passing electricity through the subsurface to mobilize contaminants, which can then be extracted. ERH has gained wide acceptance and is commonly used for treatment of source zones with volatile organic contaminants. The most common applications have been for [[Chlorinated Solvents |chlorinated solvents]] sites in difficult matrices, such as silt and clay settings. Heating is produced by passing alternating current through the formation between electrodes, which are customized to site conditions. ERH can be combined with less aggressive methods for complete site and plume restoration (e.g., see [[Thermal Remediation - Combined Remedies]]).
  
 
<div style="float:right;margin:0 0 2em 2em;">__TOC__</div>
 
<div style="float:right;margin:0 0 2em 2em;">__TOC__</div>
  
 
'''Related Article(s)''':   
 
'''Related Article(s)''':   
 +
 
*[[Thermal Remediation]]
 
*[[Thermal Remediation]]
*[[Thermal Remediation - Steam]]
+
*[[Thermal Remediation - Steam | Steam Enhanced Extraction (SEE)]]
*[[Thermal Remediation - Desorption]]
+
*[[Thermal Conduction Heating (TCH)]]
 
*[[Thermal Remediation - Combined Remedies]]
 
*[[Thermal Remediation - Combined Remedies]]
  
Line 13: Line 14:
  
 
'''Key Resource(s)''':  
 
'''Key Resource(s)''':  
*[http://dx.doi.org/10.1061/(ASCE)0733-9372(1995)121:8(580) Cleaning Contaminated Soil Using Electrical Heating and Air Stripping]<ref name = "Buettner1995">Buettner, H.M. and Daily, W.D., 1995. Cleaning contaminated soil using electrical heating and air stripping. Journal of Environmental Engineering, 121(8), 580-589. [http://dx.doi.org/10.1061/(ASCE)0733-9372(1995)121:8(580) doi:10.1061/(asce)0733-9372(1995)121:8(580)]</ref>
 
  
*[http://dx.doi.org/10.2172/10193982 Six-Phase Soil Heating for Enhanced Removal of Contaminants: Volatile Organic Compounds In Non-Arid Soils. Integrated Demonstration]<ref name= "Gauglitz1994">Gauglitz, P.; Roberts, J.; Bergman, T.; Schalla, R.; Caley, S.; Schlender, M.; Heath, W.; Jarosch, T.; Miller, M.; Eddy-Dilek, C.; Moss, R.; Looney, B., 1994. Six-phase soil heating for enhanced removal of contaminants: Volatile organic compounds in non-arid soils. Integrated demonstration, Savannah River Site. Report No. PNL-10184, UC-406. Pacific Northwest Laboratory, California, USA. [http://dx.doi.org/10.2172/10193982 doi: 10.2172/10193982]</ref>  
+
*[http://dx.doi.org/10.1061/(ASCE)0733-9372(1995)121:8(580) Cleaning Contaminated Soil Using Electrical Heating and Air Stripping]<ref name="Buettner1995">Buettner, H.M. and Daily, W.D., 1995. Cleaning Contaminated Soil Using Electrical Heating and Air Stripping. Journal of Environmental Engineering, 121(8), pp. 580-589. [http://dx.doi.org/10.1061/(ASCE)0733-9372(1995)121:8(580) doi:10.1061/(asce)0733-9372(1995)121:8(580)]</ref>
 +
 
 +
*[http://dx.doi.org/10.2172/10193982 Six-Phase Soil Heating for Enhanced Removal of Contaminants: Volatile Organic Compounds In Non-Arid Soils Integrated Demonstration]<ref name="Gauglitz1994">Gauglitz, P., Roberts, J., Bergman, T., Schalla, R., Caley, S., Schlender, M., Heath, W., Jarosch, T., Miller, M., Eddy-Dilek, C., Moss, R., Looney, B., 1994. Six-Phase Soil Heating for Enhanced Removal of Contaminants: Volatile Organic Compounds In Non-Arid Soils Integrated Demonstration, Savannah River Site. Report No. PNL-10184, UC-406. Pacific Northwest Laboratory, Richland WA, USA. 72 pages. [http://dx.doi.org/10.2172/10193982 doi: 10.2172/10193982]&nbsp;&nbsp; [[Media:Gauglitz1994.pdf | Report.pdf]]</ref>
  
*[https://doi.org/10.1002/rem.10075 Electro-Thermal Dynamic Stripping Process for In Situ Remediation Under an Occupied Apartment Building]<ref name= "McGee2003">McGee, B.C., 2003. Electro‐Thermal Dynamic Stripping Process for in situ remediation under an occupied apartment building. Remediation Journal, 13(3), 67-79. [https://doi.org/10.1002/rem.10075 doi:10.1002/rem.10075]</ref>
+
*[https://doi.org/10.1002/rem.10075 Electro-Thermal Dynamic Stripping Process for In Situ Remediation Under an Occupied Apartment Building]<ref name="McGee2003">McGee, B.C., 2003. Electro‐Thermal Dynamic Stripping Process for in situ remediation under an occupied apartment building. Remediation Journal, 13(3), pp. 67-79. [https://doi.org/10.1002/rem.10075 doi:10.1002/rem.10075]</ref>
  
 
==Introduction==
 
==Introduction==
The principle of ERH is to heat the treatment volume by passing electricity through it, causing the soil and water to heat to temperatures that mobilize the contaminants for extraction (Fig. 1). Typical ERH systems utilize three-phase alternating current applied to buried electrodes spaced systematically throughout the thermal treatment zone (TTZ) in a triangular pattern. For sites with treatment zone thickness over 5 meters (16 ft), multiple electrodes may be stacked to provide heating. Contaminants are removed by extraction from the electrodes and/or from separate extraction wells. A cooling and treatment system is then used to separate and treat the extracted water, steam, air and contaminants on site.
+
The principle of ERH is to heat the treatment volume by passing electricity through it, causing the soil and water to heat to temperatures that mobilize the contaminants for extraction (Figure 1). Typical ERH systems utilize three-phase alternating current applied to buried electrodes spaced systematically throughout the thermal treatment zone (TTZ) in a triangular pattern. An early variation of ERH used six phases of electricity. For sites with treatment zone thickness over 5 meters (16 ft), multiple elements may be stacked within an electrode borehole to customize applied voltages to the subsurface. Contaminants are removed by extraction from the electrodes and/or from separate extraction wells. A cooling and treatment system is used to separate and treat the extracted water, steam, air and contaminants on site.
[[File:Heron EHR Fig1.jpg|600px|thumbnail|center|Figure 1. Electrical Resistance Heating Schematic (courtesy of TerraTherm).]]
+
[[File:Heron3w1Fig1.png|600px|thumbnail|Figure 1. Electrical Resistance Heating Schematic]]
  
ERH requires the presence of water to conduct electricity, and therefore can be applied at low (<100°C) and moderate (~100°C) temperatures to accomplish the remediation of a wide variety of contaminants, both above and below the water table<ref name = "Buettner1995"/>.
+
ERH requires the presence of soil moisture and groundwater to conduct electricity, and therefore can be applied at low (<100°C) to moderate (~100°C) temperatures to accomplish the remediation of a wide variety of contaminants, both above and below the water table<ref name="Buettner1995" />.
  
In a modification of ERH known as Electro-Thermal Dynamic Stripping Process (ET-DSP<sup>TM</sup>)<ref name= "McGee2003"/>, water is extracted and treated in separate wells, then recirculated into custom electrodes to facilitate heating by inducing convection. This expands the use of ERH to more permeable formations, since some of the injected water is turned into steam, which adds to the heating.
+
In a modification of ERH water is extracted and treated in separate wells, then recirculated into custom electrodes to facilitate heating by inducing convection<ref name="McGee2003" />. This expands the use of ERH to more permeable formations, since some of the injected water is turned into steam, which adds to the heating.
  
 
==Applications==
 
==Applications==
 
Because ERH is based on heating by [[wikipedia: Electrical resistance and conductance | electrical resistance]], it can be used above and below the water table. Water is needed for facilitating heating, so target temperatures are restricted to local [[wikipedia: Boiling point | boiling point]] temperatures. ERH has been used most frequently to treat volatiles such as [[wikipedia: Trichloroethylene | trichloroethene (TCE)]] and tetrachloroethene (PCE). Example contaminants of concern include:
 
Because ERH is based on heating by [[wikipedia: Electrical resistance and conductance | electrical resistance]], it can be used above and below the water table. Water is needed for facilitating heating, so target temperatures are restricted to local [[wikipedia: Boiling point | boiling point]] temperatures. ERH has been used most frequently to treat volatiles such as [[wikipedia: Trichloroethylene | trichloroethene (TCE)]] and tetrachloroethene (PCE). Example contaminants of concern include:
  
*[[Chlorinated Solvents | Chlorinated solvents]]
+
*[[Chlorinated Solvents |Chlorinated solvents]]
*Volatile DNAPL
+
*[[wikipedia:Non-aqueous_phase_liquid|Non-aqueous phase liquids (NAPLs)]], both dense and light
*Fuels and heavy hydrocarbons (partial removal)
+
*Pesticides
*1,4-dioxane
+
*[[Munitions Constituents|Munition compounds]]
 +
*[[Polycyclic Aromatic Hydrocarbons (PAHs)|Polycyclic aromatic hydrocarbons (PAHs)]]
 +
*[[Petroleum Hydrocarbons (PHCs)|Fuels and heavy hydrocarbons (partial removal)]]
 +
*[[1,4-Dioxane]]<ref name="Oberle2015">Oberle, D., Crownover, E., and Kluger, M., 2015. ''In Situ'' Remediation of 1,4-Dioxane Using Electrical Resistance Heating. Remediation Journal, 25(2), pp. 35-42. [https://doi.org/10.1002/rem.21422 DOI: 10.1002/rem.21422]</ref>
  
ERH is scalable and well-suited for relatively low permeable sites, such as clays and silts. When combined with [[Thermal Remediation - Steam]], effective solutions are available for sites with substantial groundwater flow as well<ref name="Heron2005">Heron, G., Carroll, S. and Nielsen, S.G., 2005. Full‐scale removal of DNAPL constituents using steam‐enhanced extraction and electrical resistance heating. Groundwater Monitoring & Remediation, 25(4), 92-107. [https://doi.org/10.1111/j.1745-6592.2005.00060.x doi:10.1111/j.1745-6592.2005.00060.x]</ref>.
+
Target treatment temperatures are typically 90-100°C. Additionally, low temperature ERH has been implemented at sites where the remedial goal is enhancing abiotic and biotic processes, such as the biodegradation of chlorinated solvents<ref name="Truex2007">Truex, M., Powell, T. and Lynch, K., 2007. In Situ Dechlorination of TCH during Aquifer Heating. Ground Water Monitoring and Remediation, 27(2), pp. 96-105. [https://doi.org/10.1111/j.1745-6592.2007.00141.x DOI: 10.1111/j.1745-6592.2007.00141.x]</ref> or hydrolysis of munition compounds<ref name="Maxwell2020">Maxwell, M., Crownover, E., and Crane, C., 2020. Heat Enhanced Hydrolysis of Energetic Compounds and Field Results. US EPA Clu-In SAME Webinar. https://clu-in.org/conf/tio/DCHWS7_040820/ </ref>.  
  
Since ERH is based on passing current through the formation, a good understanding of the subsurface layers and their electrical properties is essential. When the treatment zone is well delineated, and the ERH system designed and implemented correctly, high removal efficiencies can be achieved.
+
ERH is scalable and well-suited for small shallow sites or large deep sites, and when properly implemented it can lead to effective site closure. ERH is very tolerant of subsurface heterogeneities and performs as well in low permeability clays and silts as higher permeability sands and gravels<ref name="Beyke2005">Beyke, G., Fleming, D., 2005. ''In Situ'' Thermal Remediation of DNAPL and LNAPL Using Electrical Resistance Heating. Remediation Journal, 15(3), pp. 5-22. [https://doi.org/10.1002/rem.20047 DOI: 10.1002/rem.20047]</ref>. When combined with [[Thermal Remediation - Steam | Steam Enhanced Extraction (SEE)]], effective solutions are available for sites with substantial groundwater flow as well<ref name="Heron2005">Heron, G., Carroll, S. and Nielsen, S.G., 2005. Full‐Scale Removal of DNAPL Constituents Using Steam‐Enhanced Extraction and Electrical Resistance Heating. Groundwater Monitoring and Remediation, 25(4), pp. 92-107. [https://doi.org/10.1111/j.1745-6592.2005.00060.x doi:10.1111/j.1745-6592.2005.00060.x]&nbsp;&nbsp; [http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.881.4134&rep=rep1&type=pdf Free Download]</ref>. When the treatment zone is well delineated, and the ERH system designed and implemented correctly, high removal efficiencies can be achieved.
  
 
==Example Case Studies==
 
==Example Case Studies==
ERH has been applied to approximately 150 sites worldwide. Example cases include:
+
ERH has been applied to over 200 sites worldwide. Example cases include:
  
#'''Savannah River Site:''' An early variation of ERH (6 phase heating) was used to demonstrate effectiveness for a chlorinated solvent hotspot<ref name= "Gauglitz1994"/>.
+
#'''Savannah River Site:''' ERH (6 phase heating) was used to demonstrate effectiveness for a chlorinated solvent hotspot<ref name="Gauglitz1994" />.
 
#'''Lawrence Livermore National Laboratory – Gas Pad:''' ERH was combined with steam injection to demonstrate treatment of a deep gasoline spill<ref>Newmark, R.L. (ed.) 1994. Demonstration of Dynamic Underground Stripping at the Lawrence Livermore National Laboratory Gasoline Spill Site. Final Report UCRL-ID-116964, Vol. 1-4. Lawrence Livermore National Laboratory, Livermore, CA.</ref>.
 
#'''Lawrence Livermore National Laboratory – Gas Pad:''' ERH was combined with steam injection to demonstrate treatment of a deep gasoline spill<ref>Newmark, R.L. (ed.) 1994. Demonstration of Dynamic Underground Stripping at the Lawrence Livermore National Laboratory Gasoline Spill Site. Final Report UCRL-ID-116964, Vol. 1-4. Lawrence Livermore National Laboratory, Livermore, CA.</ref>.
#'''Young-Rainey STAR Center:''' ET-DSP and steam enhanced extraction was combined for treatment of a 35-ft deep source zone in complex geology<ref name="Heron2005"/>.
+
#'''Young-Rainey STAR Center:''' ERH and steam enhanced extraction was combined for treatment of a 35-ft deep source zone in complex geology<ref name="Heron2005" />.
 +
#'''Paducah Gaseous Diffusion Plant:''' ERH (6 phase heating) was used to demonstrate heating to 100 feet below ground surface, the deepest application at that time. Multiple elements were installed within the electrode borings<ref name="Beyke2005"/>.
 +
#'''East Gate Disposal Yard Site:''' ERH was used at three different [[wikipedia:Dense_non-aqueous_phase_liquid|DNAPL]] ([[wikipedia:Trichloroethylene|TCE]]) and [[Light Non-Aqueous Phase Liquids (LNAPLs)|LNAPL]] (petroleum products, oils and lubricants) source areas. Significant reductions of contaminant mass (greater than 99%) were observed within the treatment areas and downgradient. One of the source area ERH applications resulted in over 100,000 lbs of volatile organic compound (VOC) mass removed<ref name="Powell2007">Powell, T., Smith, G., Sturza, J., Lynch, K. and Truex, M., 2007. New Advancements for ''In Situ'' Treatment Using Electrical Resistance Heating. Remediation Journal, 17(2), pp. 51-70. [https://doi.org/10.1002/rem.20124 DOI: 10.1002/rem.20124]&nbsp;&nbsp; Free download from: [https://www.dtsc-ssfl.com/files/lib_ceqa/ref_draft_peir/Chap4_13-EnergyConsump/68457_Wiley_periodicals.pdf California EPA].</ref>. Additionally, biotic and abiotic degradation processes were observed throughout the range of operating temperatures, which lead to a heat enhanced biodegradation demonstration at the same site<ref name="Truex2007"/>.
 +
#'''Sandstone Site in Eastern Pennsylvania''': ERH treatment of a 90-ft thick sandstone bedrock treatment interval took 82 days to achieve remedial goals and meet target temperatures<ref name="Beyke2014">Beyke, G.L., Hodges, B.A. and Jones, G.N., 2014. Electrical Resistance Heating of Volatile Organic Compounds in Sedimentary Rock. Remediation Journal, 25(1), pp. 53-70. [https://doi.org/10.1002/rem.21414 DOI: 10.1002/rem.21414]</ref>.
 +
#'''Redstone Arsenal:''' ERH was used for several [[wikipedia:Dense_non-aqueous_phase_liquid|DNAPL]] source area ([[wikipedia:Trichloroethylene|TCE]] and [[wikipedia:Chlorobenzene|chlorobenzene]]) remediations in karst limestone<ref name="Beyke2014"/>.
 +
#'''Confidential Site:''' ''In situ'' treatment of [[1,4-Dioxane]] using ERH, resulting in a greater than 99.8% removal from the subsurface due to steam stripping<ref name="Oberle2015"/>.
 +
#'''Sioux Army Depot Site:''' ERH used to demonstrate effective hydrolysis of [[wikipedia:RDX|RDX]], [[wikipedia:TNT|TNT]], [[wikipedia:HMX|HMX]] and other [[Munitions Constituents|munitions compounds]]<ref name="Maxwell2020"/>.
  
The application of ERH has since become more common, and not where multiple simpler case studies exist where relatively small TCE and PCE sources have been remediated. Unfortunately, few of these cases are published.  
+
These case studies illustrate the type of sites addressed with ERH. Common themes are (1) significant source contamination, (2) advances with heat enhanced abiotic and biotic processes.
  
 
==Summary==
 
==Summary==
Thermal Remediation - Electrical Resistance Heating can be used to treat volatile organic compound (VOC)-contaminated source zones to low levels in tight formations such as silts and clays. By heating the target volume to near the boiling point of water, contaminants are volatilized and removed for treatment or destruction on site.  
+
Electrical Resistance Heating can be used to treat volatile organic compound (VOC)-contaminated source zones to low levels in tight formations such as silts and clays. By heating the target volume to near the boiling point of water, contaminants are volatilized and removed for treatment or destruction on site.  
  
 
==References==
 
==References==
  
<references/>
+
<references />
  
 
==See Also==
 
==See Also==

Revision as of 17:11, 11 December 2020

Electrical Resistance Heating (ERH) utilizes heating produced by passing electricity through the subsurface to mobilize contaminants, which can then be extracted. ERH has gained wide acceptance and is commonly used for treatment of source zones with volatile organic contaminants. The most common applications have been for chlorinated solvents sites in difficult matrices, such as silt and clay settings. Heating is produced by passing alternating current through the formation between electrodes, which are customized to site conditions. ERH can be combined with less aggressive methods for complete site and plume restoration (e.g., see Thermal Remediation - Combined Remedies).

Related Article(s):


CONTRIBUTOR(S): Dr. Gorm Heron

Key Resource(s):

Introduction

The principle of ERH is to heat the treatment volume by passing electricity through it, causing the soil and water to heat to temperatures that mobilize the contaminants for extraction (Figure 1). Typical ERH systems utilize three-phase alternating current applied to buried electrodes spaced systematically throughout the thermal treatment zone (TTZ) in a triangular pattern. An early variation of ERH used six phases of electricity. For sites with treatment zone thickness over 5 meters (16 ft), multiple elements may be stacked within an electrode borehole to customize applied voltages to the subsurface. Contaminants are removed by extraction from the electrodes and/or from separate extraction wells. A cooling and treatment system is used to separate and treat the extracted water, steam, air and contaminants on site.

Figure 1. Electrical Resistance Heating Schematic

ERH requires the presence of soil moisture and groundwater to conduct electricity, and therefore can be applied at low (<100°C) to moderate (~100°C) temperatures to accomplish the remediation of a wide variety of contaminants, both above and below the water table[1].

In a modification of ERH water is extracted and treated in separate wells, then recirculated into custom electrodes to facilitate heating by inducing convection[3]. This expands the use of ERH to more permeable formations, since some of the injected water is turned into steam, which adds to the heating.

Applications

Because ERH is based on heating by electrical resistance, it can be used above and below the water table. Water is needed for facilitating heating, so target temperatures are restricted to local boiling point temperatures. ERH has been used most frequently to treat volatiles such as trichloroethene (TCE) and tetrachloroethene (PCE). Example contaminants of concern include:

Target treatment temperatures are typically 90-100°C. Additionally, low temperature ERH has been implemented at sites where the remedial goal is enhancing abiotic and biotic processes, such as the biodegradation of chlorinated solvents[5] or hydrolysis of munition compounds[6].

ERH is scalable and well-suited for small shallow sites or large deep sites, and when properly implemented it can lead to effective site closure. ERH is very tolerant of subsurface heterogeneities and performs as well in low permeability clays and silts as higher permeability sands and gravels[7]. When combined with Steam Enhanced Extraction (SEE), effective solutions are available for sites with substantial groundwater flow as well[8]. When the treatment zone is well delineated, and the ERH system designed and implemented correctly, high removal efficiencies can be achieved.

Example Case Studies

ERH has been applied to over 200 sites worldwide. Example cases include:

  1. Savannah River Site: ERH (6 phase heating) was used to demonstrate effectiveness for a chlorinated solvent hotspot[2].
  2. Lawrence Livermore National Laboratory – Gas Pad: ERH was combined with steam injection to demonstrate treatment of a deep gasoline spill[9].
  3. Young-Rainey STAR Center: ERH and steam enhanced extraction was combined for treatment of a 35-ft deep source zone in complex geology[8].
  4. Paducah Gaseous Diffusion Plant: ERH (6 phase heating) was used to demonstrate heating to 100 feet below ground surface, the deepest application at that time. Multiple elements were installed within the electrode borings[7].
  5. East Gate Disposal Yard Site: ERH was used at three different DNAPL (TCE) and LNAPL (petroleum products, oils and lubricants) source areas. Significant reductions of contaminant mass (greater than 99%) were observed within the treatment areas and downgradient. One of the source area ERH applications resulted in over 100,000 lbs of volatile organic compound (VOC) mass removed[10]. Additionally, biotic and abiotic degradation processes were observed throughout the range of operating temperatures, which lead to a heat enhanced biodegradation demonstration at the same site[5].
  6. Sandstone Site in Eastern Pennsylvania: ERH treatment of a 90-ft thick sandstone bedrock treatment interval took 82 days to achieve remedial goals and meet target temperatures[11].
  7. Redstone Arsenal: ERH was used for several DNAPL source area (TCE and chlorobenzene) remediations in karst limestone[11].
  8. Confidential Site: In situ treatment of 1,4-Dioxane using ERH, resulting in a greater than 99.8% removal from the subsurface due to steam stripping[4].
  9. Sioux Army Depot Site: ERH used to demonstrate effective hydrolysis of RDX, TNT, HMX and other munitions compounds[6].

These case studies illustrate the type of sites addressed with ERH. Common themes are (1) significant source contamination, (2) advances with heat enhanced abiotic and biotic processes.

Summary

Electrical Resistance Heating can be used to treat volatile organic compound (VOC)-contaminated source zones to low levels in tight formations such as silts and clays. By heating the target volume to near the boiling point of water, contaminants are volatilized and removed for treatment or destruction on site.

References

  1. ^ 1.0 1.1 Buettner, H.M. and Daily, W.D., 1995. Cleaning Contaminated Soil Using Electrical Heating and Air Stripping. Journal of Environmental Engineering, 121(8), pp. 580-589. doi:10.1061/(asce)0733-9372(1995)121:8(580)
  2. ^ 2.0 2.1 Gauglitz, P., Roberts, J., Bergman, T., Schalla, R., Caley, S., Schlender, M., Heath, W., Jarosch, T., Miller, M., Eddy-Dilek, C., Moss, R., Looney, B., 1994. Six-Phase Soil Heating for Enhanced Removal of Contaminants: Volatile Organic Compounds In Non-Arid Soils Integrated Demonstration, Savannah River Site. Report No. PNL-10184, UC-406. Pacific Northwest Laboratory, Richland WA, USA. 72 pages. doi: 10.2172/10193982   Report.pdf
  3. ^ 3.0 3.1 McGee, B.C., 2003. Electro‐Thermal Dynamic Stripping Process for in situ remediation under an occupied apartment building. Remediation Journal, 13(3), pp. 67-79. doi:10.1002/rem.10075
  4. ^ 4.0 4.1 Oberle, D., Crownover, E., and Kluger, M., 2015. In Situ Remediation of 1,4-Dioxane Using Electrical Resistance Heating. Remediation Journal, 25(2), pp. 35-42. DOI: 10.1002/rem.21422
  5. ^ 5.0 5.1 Truex, M., Powell, T. and Lynch, K., 2007. In Situ Dechlorination of TCH during Aquifer Heating. Ground Water Monitoring and Remediation, 27(2), pp. 96-105. DOI: 10.1111/j.1745-6592.2007.00141.x
  6. ^ 6.0 6.1 Maxwell, M., Crownover, E., and Crane, C., 2020. Heat Enhanced Hydrolysis of Energetic Compounds and Field Results. US EPA Clu-In SAME Webinar. https://clu-in.org/conf/tio/DCHWS7_040820/
  7. ^ 7.0 7.1 Beyke, G., Fleming, D., 2005. In Situ Thermal Remediation of DNAPL and LNAPL Using Electrical Resistance Heating. Remediation Journal, 15(3), pp. 5-22. DOI: 10.1002/rem.20047
  8. ^ 8.0 8.1 Heron, G., Carroll, S. and Nielsen, S.G., 2005. Full‐Scale Removal of DNAPL Constituents Using Steam‐Enhanced Extraction and Electrical Resistance Heating. Groundwater Monitoring and Remediation, 25(4), pp. 92-107. doi:10.1111/j.1745-6592.2005.00060.x   Free Download
  9. ^ Newmark, R.L. (ed.) 1994. Demonstration of Dynamic Underground Stripping at the Lawrence Livermore National Laboratory Gasoline Spill Site. Final Report UCRL-ID-116964, Vol. 1-4. Lawrence Livermore National Laboratory, Livermore, CA.
  10. ^ Powell, T., Smith, G., Sturza, J., Lynch, K. and Truex, M., 2007. New Advancements for In Situ Treatment Using Electrical Resistance Heating. Remediation Journal, 17(2), pp. 51-70. DOI: 10.1002/rem.20124   Free download from: California EPA.
  11. ^ 11.0 11.1 Beyke, G.L., Hodges, B.A. and Jones, G.N., 2014. Electrical Resistance Heating of Volatile Organic Compounds in Sedimentary Rock. Remediation Journal, 25(1), pp. 53-70. DOI: 10.1002/rem.21414

See Also