In situ removal of contamination from soil

Details In situ removal of contamination from soil In situ removal of contamination from soil

1996-04-23

1997-10-14

Phasge, Arun S.

Electrolysis: processes, compositions used therein, and methods

Electrolytic material treatment

205 43, 205 46, 205688, 205771, 204515, 588 1, 588204, C25C 122

Patent

active

056768192

ABSTRACT:
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.

REFERENCES:
patent: 5240570 (1993-08-01), Chang et al.
patent: 5398756 (1995-03-01), Brodsky et al.
patent: 5435895 (1995-07-01), Lindgren et al.
patent: 5458747 (1995-10-01), Marks et al.
patent: 5476992 (1995-12-01), Ho et al.

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