The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2003
Filed:
Jul. 03, 2002
Kalliat T. Valsaraj, Baton Rouge, LA (US);
Karsten E. Thompson, Baton Rouge, LA (US);
Danny D. Reible, Baton Rouge, LA (US);
Le Yan, Baton Rouge, LA (US);
Board of Supervisors of Louisiana State University and Agricultural and Mechanical College, Baton Rouge, LA (US);
Abstract
A novel method that promotes upward mobilization of dense nonaqueous-phase liquid contaminants. In one embodiment, the method comprises the steps of: ( ) injecting a treating agent (e.g., a polyaphron solution) comprising a light organic-phase fluid (e.g., kerosene, xylene, octane, hexane, etc.) into the Earth's subsurface, targeted within or adjacent to the dense contaminant source zone; and ( ) injecting a post-flush agent comprising a polyvalent cation (e.g., Al , Fe , etc.), or similar species, once the treating agent is displaced throughout the source zone. The treating agent converts the contaminant to a density less than the density of groundwater by inducing in-situ mixing. The post-flush agent destabilizes the polyaphrons thus allowing the contaminant and the treating agent to mix.