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Title: Electrode wells for powerline-frequency electrical heating of soils

Abstract

An electrode well for use in powerline-frequency heating of soils for decontamination of the soil. Heating of soils enables the removal of volatile organic compounds from soil when utilized in combination with vacuum extraction. A preferred embodiment of the electrode well utilizes a mild steel pipe as the current-carrying conductor to at least one stainless steel electrode surrounded by a conductive backfill material, preferably graphite or steel shot. A covering is also provided for electrically insulating the current-carrying pipe. One of the electrode wells is utilized with an extraction well which is under subatmospheric pressure to withdraw the volatile material, such as gasoline and trichioroethylene (TCE) as it is heated.

Inventors:
 [1];  [1];  [1];  [1];  [2];  [1]
  1. (Livermore, CA)
  2. (Pleasanton, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872307
Patent Number(s):
5907662
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrode; powerline-frequency; electrical; heating; soils; decontamination; soil; enables; removal; volatile; organic; compounds; utilized; combination; vacuum; extraction; preferred; embodiment; utilizes; mild; steel; pipe; current-carrying; conductor; stainless; surrounded; conductive; backfill; material; preferably; graphite; shot; covering; provided; electrically; insulating; subatmospheric; pressure; withdraw; gasoline; trichioroethylene; tce; heated; electrical heating; organic compound; electrically insulating; organic compounds; preferred embodiment; stainless steel; atmospheric pressure; volatile organic; subatmospheric pressure; fill material; volatile material; electrical heat; frequency electrical; frequency electric; preferably graphite; powerline-frequency electrical; /392/166/219/422/

Citation Formats

Buettner, Harley M., Daily, William D., Aines, Roger D., Newmark, Robin L., Ramirez, Abelardo L., and Siegel, William H. Electrode wells for powerline-frequency electrical heating of soils. United States: N. p., 1999. Web.
Buettner, Harley M., Daily, William D., Aines, Roger D., Newmark, Robin L., Ramirez, Abelardo L., & Siegel, William H. Electrode wells for powerline-frequency electrical heating of soils. United States.
Buettner, Harley M., Daily, William D., Aines, Roger D., Newmark, Robin L., Ramirez, Abelardo L., and Siegel, William H. Fri . "Electrode wells for powerline-frequency electrical heating of soils". United States. https://www.osti.gov/servlets/purl/872307.
@article{osti_872307,
title = {Electrode wells for powerline-frequency electrical heating of soils},
author = {Buettner, Harley M. and Daily, William D. and Aines, Roger D. and Newmark, Robin L. and Ramirez, Abelardo L. and Siegel, William H.},
abstractNote = {An electrode well for use in powerline-frequency heating of soils for decontamination of the soil. Heating of soils enables the removal of volatile organic compounds from soil when utilized in combination with vacuum extraction. A preferred embodiment of the electrode well utilizes a mild steel pipe as the current-carrying conductor to at least one stainless steel electrode surrounded by a conductive backfill material, preferably graphite or steel shot. A covering is also provided for electrically insulating the current-carrying pipe. One of the electrode wells is utilized with an extraction well which is under subatmospheric pressure to withdraw the volatile material, such as gasoline and trichioroethylene (TCE) as it is heated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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