Wells – Processes – Using microorganisms
Patent
1992-02-20
1993-11-30
Novosad, Stephen J.
Wells
Processes
Using microorganisms
166 50, 166272, 166303, 166371, E21B 4300, E21B 4324, E02D 300, E02D 311
Patent
active
052656748
ABSTRACT:
Methods are provided for remediating subsurface areas contaminated by toxic organic compounds. An innocuous oil, such as vegetable oil, mineral oil, or other immiscible organic liquid, is introduced into the contaminated area and permitted to move therethrough. The oil concentrates or strips the organic contaminants, such that the concentration of the contaminants is reduced and such contaminants are available to be either pumped out of the subsurface area or metabolized by microorganisms. Microorganisms may be introduced into the contaminated area to effect bioremediation of the contamination. The methods may be adapted to deliver microorganisms, enzymes, nutrients and electron donors to subsurface zones contaminated by nitrate in order to stimulate or enhance denitrification.
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Brockman Fred J.
Cary John W.
Fredrickson James K.
McBride John F.
Streile Gary P.
Battelle (Memorial Institute)
May Stephen R.
Novosad Stephen J.
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