Technology Status Report: In Situ Flushing - CLU-IN

In Situ Flushing Project Summaries
GWRTAC Case Study Database
GWRTAC ID: FLSH0084
Project Name: Georessources - Aquifer Washing by Micellar Solutions
City: Sainte-Foy State/Province: QC
Primary GWRTAC Personal
Communication Source
(Name/Organization):
Project Summary:
None
None
Report(s)/Publication(s) (GWRTAC Source):
U.S. EPA Technology Innovation Office Technology Information Summary Report, Oct. 16-31,
1998, page 10.
The following text was excerpted from U.S. EPA Technology Innovation Office Technology
Information Summary Report, Oct. 16-31, 1998, page 10:
Phase diagrams were used to identify dense nonaqueous phase liquid (DNAPL) extraction zones
and for alcohol-surfactant-solvent formulation. Although four potential extraction zones of Mercier
DNAPL, a mixture of heavy aliphatics, aromatics and chlorinated hydrocarbons, were identified,
only one microemulsion zone showed satisfactory DNAPL recovery in sand columns. More than 90
sand column experiments were performed. Among the researchers' findings: (1) only combined
alcohol- surfactant-solvent solutions effectively recovered DNAPLS; and (2) washing solution
formulations seemed to be site specific and had to be modified if the surface properties of the
solids (mineralogy) changed locally, or if the interfacial behavior of liquids (type of oil) changed.
The optimal washing solution of n-butanol-SAS-toluene-D-limonene in water recovered up to 95%
of Mercier DNAPL in sand columns.
Report(s)/Publication(s) (Additional Information Sources):
R. Martel, P.J. Gelinas, J.E. Desnoyers, INRS-Georessources, 2535 boul. Laurier, C.P. 7500,
Sainte-Foy, QC, G1V 4C7, Canada, "Aquifer Washing by Micellar Solutions: 1. Optimization of
Alcohol-Surfactant-Solvent Solutions", in Journal of Contaminant Hydrology, 29:4, pp. 319-346,
1998.
U.S. EPA Technology Innovation Office Technology Information Summary Report, Oct. 16-31,
1998, page 10.
Ground-Water Remediation Technologies Analysis Center
Operated by Concurrent Technologies Corporation
Appendix - Page 164 of 164
Copyright GWRTAC 1998
Revision 1
Tuesday, November 17, 1998