Patent Number: 6,251,058

Title: Treatment of soil contaminated with hazardous residues

Abstract: A method for removal of organic contaminants from solid particulate soil contaminated with the organic contaminants. The method comprises forming an aqueous slurry of a mixture of a hydrophobic adsorbent selected from foamed synthetic materials or natural materials which entrap gas, with the soil in the presence of water. The adsorbent has a density less than water. The slurry is mixed for a period of time, and a gravity separation of the adsorbent from the aqueous admixture thus obtained is effected.

Inventors: Ward; Owen P. (Waterloo, CA), Singh; Ajay (Waterloo, CA), Billingsley; Kate (Ottawa, CA)

Assignee: Petrozyme Technologies, Inc.

International Classification: B09C 1/02 (20060101); B09C 1/00 (20060101); C10G 1/00 (20060101); A62D 003/00 (); B08B 007/04 (); B09C 001/04 ()

Expiration Date: 06/26/2018