Skip to Content
Find More Like This
Return to Search

In situ removal of contamination from soil

United States Patent

5,676,819
October 14, 1997
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A process of remediation of cationic heavy metal contamination from soil utilizes gas phase manipulation to inhibit biodegradation of a chelating agent that is used in an electrokinesis process to remove the contamination, and further gas phase manipulation to stimulate biodegradation of the chelating agent after the contamination has been removed. The process ensures that the chelating agent is not attacked by bioorganisms in the soil prior to removal of the contamination, and that the chelating agent does not remain as a new contaminant after the process is completed.
Lindgren; Eric R. (Albuquerque, NM), Brady; Patrick V. (Albuquerque, NM)
The United States of America as represented by the United States (Washington, DC)
08/ 636,613
April 23, 1996
The United States Government has rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.