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Tech ID: 17
Project Overview
Electrical Resistance Tomography (ERT) has been
developed by Lawrence Livermore National Laboratory through funding
by DOE OST. The technology provides 3-D imaging of the subsurface
for geological features as well as changes due to remediation operations.
ERT has not only been demonstrated for many types of remediation
operations (soil heating, electrokinetics, pump and treat, Dynamic
Stripping, Hydrous Pyrolysis, and more) but it has been engineered
to be deployed by a cone penetrometer and has been commercialized.
In addition, ERT has been deployed in characterizing Yucca Mountain,
cleaning Lawrence Livermore National Laboratory main site, cleaning
up a commercial site with hundreds of thousands of gallons of DNAPLs
in the subsurface. Other technologies based upon ERT have been demonstrated
and await deployment by industry at DOE sites.
Related technologies/projects:
Tech ID #140, Tech ID #2121, TTP #SF2-4-C223
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Technical Description
Electrical Resistance Tomography (ERT) noninvasively maps in
3-D the subsurface. It can be used on a scale from feet to
kilometers. ERT has been applied to mapping subsurface
hydrogeological features and provides good resolution mapping
of confining layers of various types. ERT has also been
successfully demonstrated for real-time imaging of remediation
processes to provide process control. Remediation processes
imaged include: soil heating, pump and treat, steam injection,
electrokinetics, Dynamic Stripping, Hydrous Pyrolysis and more.
ERT has been successfully engineered to allow rapid and
inexpensive installation of electrodes with a Cone Penetrometer.
The technology for site characterization and remediation
monitoring has been commercialized and has been deployed at DOE
and commercial sites. ERT is essential for process control of
steam injection to destroy all organic contaminants in the
subsurface with two other Lawrence Livermore National Laboratory
patented remediation technologies: Dynamic Stripping and Hydrous
Pyrolysis. Other technologies applying ERT to other problems
have been successfully demonstrated and commercialized and
simply await initial implementation at a DOE site.
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