Ventilation of porous media Page: 4 of 29
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1
BACKGROUND OF THE INVENTION
This invention relates to fluid flow in porous media.
This invention is the result of a contract with the
Department of Energy (Contract No. W-7405-ENG-36).
05 This invention is useful in infusing a porous material
with a gas, which may be comprised of a volatile substance
or suspended solids, and removing a gas from a porous
substance. A significant application of the invention is
in soil vapor extraction (SVE), which is also referred to
10 as soil venting, air stripping, vacuum extraction, etc.
The invention will be explained primarily in terms of this
application, but it is to be understood that there are
numerous other applications for use of the inventive
method. For example, the invention may be used in drying
15 gypsum wallboard material and bioremediation, where
microbes are used to destroy contaminants in soil or other
porous materials and oxygen must be added to maintain the
microbe population.
SVE is often the preferred method to clean up soil
20 which is contaminated with volatile materials. In numerous
locations, chemicals such as gasoline and other
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Neeper, D.A. Ventilation of porous media, patent, December 31, 1992; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc626365/m1/4/: accessed March 29, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.