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Title: Method of remediation of contaminants in porous media through minimization of bouyancy effects

Abstract

A method for controlling vertical migration of contaminants in an aquifer includes introduction of a solubilizing solution having a surfactant and an alcohol or other light co-solvent. The surfactant is selected to solubilize the contaminant. The alcohol or other solvent is selected to provide the microemulsion with a substantially neutral buoyancy with respect to groundwater. The neutral buoyancy of the microemulsion prevents the normal downward movement which is typical of the solubilized dense non-aqueous phase liquid in surfactant-enhanced aquifer remediation. Thus, the risk that any significant amount of the solubilized dense non-aqueous contaminants will migrate vertically can be controlled. The relative tendency for vertical migration may also be reduced by increasing the injection rate or injected fluid viscosity (by adding polymer), or by reducing the well spacing.

Inventors:
 [1];  [2]
  1. Rigby, ID
  2. Austin, TX
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
OSTI Identifier:
872701
Patent Number(s):
5993660
Assignee:
Lockheed Martin Idaho Technologies Company (Idaho Falls, ID)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; remediation; contaminants; porous; media; minimization; bouyancy; effects; controlling; vertical; migration; aquifer; introduction; solubilizing; solution; surfactant; alcohol; light; co-solvent; selected; solubilize; contaminant; solvent; provide; microemulsion; substantially; neutral; buoyancy; respect; groundwater; prevents; normal; downward; movement; typical; solubilized; dense; non-aqueous; phase; liquid; surfactant-enhanced; risk; significant; amount; migrate; vertically; controlled; relative; tendency; reduced; increasing; injection; rate; injected; fluid; viscosity; adding; polymer; reducing; spacing; porous media; phase liquid; injection rate; aqueous phase; significant amount; downward movement; fluid viscosity; /210/405/510/516/

Citation Formats

Shook, G Michael, and Pope, Gary A. Method of remediation of contaminants in porous media through minimization of bouyancy effects. United States: N. p., 1999. Web.
Shook, G Michael, & Pope, Gary A. Method of remediation of contaminants in porous media through minimization of bouyancy effects. United States.
Shook, G Michael, and Pope, Gary A. Fri . "Method of remediation of contaminants in porous media through minimization of bouyancy effects". United States. https://www.osti.gov/servlets/purl/872701.
@article{osti_872701,
title = {Method of remediation of contaminants in porous media through minimization of bouyancy effects},
author = {Shook, G Michael and Pope, Gary A},
abstractNote = {A method for controlling vertical migration of contaminants in an aquifer includes introduction of a solubilizing solution having a surfactant and an alcohol or other light co-solvent. The surfactant is selected to solubilize the contaminant. The alcohol or other solvent is selected to provide the microemulsion with a substantially neutral buoyancy with respect to groundwater. The neutral buoyancy of the microemulsion prevents the normal downward movement which is typical of the solubilized dense non-aqueous phase liquid in surfactant-enhanced aquifer remediation. Thus, the risk that any significant amount of the solubilized dense non-aqueous contaminants will migrate vertically can be controlled. The relative tendency for vertical migration may also be reduced by increasing the injection rate or injected fluid viscosity (by adding polymer), or by reducing the well spacing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

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