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In situ formation of reactive barriers for pollution control

United States Patent

April 27, 2004
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
A method of treating soil contamination by forming one or more zones of oxidized material in the path of percolating groundwater is disclosed. The zone or barrier region is formed by delivering an oxidizing agent into the ground for reaction with an existing soil component. The oxidizing agent modifies the existing soil component creating the oxidized zone. Subsequently when soil contaminates migrate into the zone, the oxidized material is available to react with the contaminates and degrade them into benign products. The existing soil component can be an oxidizable mineral such as manganese, and the oxidizing agent can be ozone gas or hydrogen peroxide. Soil contaminates can be volatile organic compounds. Oxidized barriers can be used single or in combination with other barriers.
Gilmore; Tyler J. (Pasco, WA), Riley; Robert G. (West Richland, WA)
Battelle Memorial Institute (Richland, WA)
09/ 888,944
June 25, 2001
This invention was made with Government support under Contract Number DEAC0676RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.