In situ removal of contamination from soil

Patent · Tue Dec 31 23:00:00 EST 1996

OSTI ID:871179

Lindgren, Eric R ^[1]; Brady, Patrick V ^[1]

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1. Albuquerque, NM

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.

• Research Organization: SANDIA CORP
• DOE Contract Number: AC04-94AL85000
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5676819
• OSTI ID: 871179
• Country of Publication: United States
• Language: English

Related Subjects

/205/204/588/
agent
attacked
biodegradation
bioorganisms
cationic
chelating
chelating agent
completed
contaminant
contamination
electrokinesis
ensures
gas
gas phase
heavy
heavy metal
inhibit
manipulation
metal
metal contamination
phase
prior
process
remain
remediation
removal
remove
removed
situ
soil
stimulate
utilizes