1
Joseph M Nelson, Garland R Rau: In situ soil decontamination method and apparatus. Hrubetz Exploration Company, Richards Medlock & Andrews, April 30, 1991: US05011329 (210 worldwide citation)

Disclosed is in situ decontamination methods and apparatus for injecting a hot gas into boreholes formed in a contaminated soil area to vaporize the soil moisture and contaminants, and for collecting the vaporized contaminants at the surface of the soil. A burner heats pressurized gases and mixes th ...


2
Paul C Johnson, James D Colthart, Arthur L Otermat, David A Weingaertner, Charles C Chou, Dallas L Byers, Stephen M Stearns, Arnold R Marsden Jr, George M Deeley: Soil decontamination. Shell Oil Company, May 19, 1992: US05114497 (50 worldwide citation)

An improved process for the remediation of soil contaminated by the presence therein of organic or semi-volatile inorganic contaminants which comprises (1) supplying thermal energy to the soil at one or more locations under the surface of the soil, (2) collecting the vapors resulting from contaminan ...


3
C George Bower, Allan W Bernat: Integrated soil and fluid decontamination system. Prosys Corporation, Smith Patent Office, September 29, 1998: US05814234 (40 worldwide citation)

A method for decontaminating both soil and mixed waste water polluted by hydrocarbons in a single integrated process is disclosed. Contaminated mixed waste fluid is separated into water and hydrocarbons which are then used in the thermal decontamination of polluted soil through the volatilization of ...


4
Christopher A Land, Joseph A Pezzullo, James J Malot, Louis C Papa, Daniel Oberle: Process for soil decontamination by oxidation and vacuum extraction. Terra Vac, April 1, 1997: US05615974 (37 worldwide citation)

A process for in situ treatment of a contaminated subsurface zone of the earth containing volatile liquid or semisolid organic contaminants, semivolatile liquid or semisolid organic contaminants and/or nonvolatile organic contaminants in liquid, semisolid and/or solidified form which comprises treat ...


5
Andrew H Hansen, William C Walker, Richard K Walker, Sam Braly: Method and apparatus for soil decontamination. Pacific Resource Recovery, James E Brunton, December 18, 1990: US04978508 (28 worldwide citation)

A method and apparatus for decontaminating soil which has been contaminated with hazardous hydrocarbons. The apparatus includes a blending or scrubbing unit for mixing the contaminated soil with water and a suitable surfactant to form a slurry; screening apparatus operably interconnected with the bl ...


6
James E Bruya: Soil decontamination method. Christensen O Connor Johnson & Kindness, June 27, 1989: US04841998 (25 worldwide citation)

A method of decontaminating soil consisting of removing organic hazardous waste from contaminated soil with an aqueous ammonia solution. The resulting aqueous ammonia solution containing organic hazardous waste is further processed to isolate the organic hazardous waste in a small volume for disposa ...


7
John J Wang: Soil decontamination with wick drains. Brian Watt Associates, Pravel Gambrell Hewitt & Kimball, April 15, 1986: US04582611 (25 worldwide citation)

A process for removing contaminants from soil or aquifers. The process uses wick drains which include an outer filter medium supported by a rigid inner perforate member. The wick drains are inserted into the contaminated soil or aquifer, water is injected into one or more of the wick drains, and wat ...


8
Paul C Johnson, David A Weingaertner: In-situ soil decontamination process with sub-surface vapor recovery. Shell Oil Company, December 8, 1992: US05169263 (24 worldwide citation)

An improved in-situ soil decontamination heating process utilizes a submerged vapor recovery system comprising perforated or slotted pipes buried in the contaminated soil or below the depth of contamination. The pipes may be buried in a manifold arrangement and may contain thermocouples to monitor t ...


9
Joseph J Pignatello: Soil decontamination using ferric chelates and peroxide. The Connecticut Agricultural Experiment Station, Todd E Garabedian, Dale L Wiggin & Dana Carlson, December 12, 2000: US06160194 (24 worldwide citation)

Soluble ferric chelates and peroxide are employed in a method for degrading organic contaminants such as pesticides in soil. In the practice of the method, soil containing an organic compound having at least one oxidizable aliphatic or aromatic functional group is contacted with an active ferric che ...


10
Charles C Chou: Soil decontamination. Shell Oil Company, May 11, 1993: US05209604 (22 worldwide citation)

The top layers of soil contaminated with halogenated organic chemicals are remediated by initial heating at moderate temperature and reduced pressure to remove soil moisture and volatile contaminants and subsequently heating the soil of minimum clay content or acidity at higher temperature, thereby ...