skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In-situ groundwater remediation by selective colloid mobilization

Abstract

An in-situ groundwater remediation pump and treat technique is described which is effective for reclamation of aquifers that have been contaminated with a mixed, metal-containing waste, and which promotes selective mobilization of metal oxide colloids with a cationic surfactant, preferably a quaternary alkylammonium surfactant, without significantly reducing formation permeability that often accompanies large-scale colloid dispersion, thus increasing the efficiency of the remediation effort by enhancing the capture of strongly sorbing contaminants associated with the oxide phases. The resulting suspension can be separated from the bulk solution with controlled pH adjustments to destabilize the oxide colloids, and a clear supernatant which results that can be recycled through the injection well without further waste treatment. 3 figs.

Inventors:
;
Issue Date:
Research Org.:
University of Georgia Research Foundation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
321171
Patent Number(s):
5,846,434
Application Number:
PAN: 8-808,253
Assignee:
Univ. of Georgia Research Foundation, Athens, GA (United States) PTO; SCA: 540220; PA: EDB-99:031517; SN: 99002058506
DOE Contract Number:  
AC09-76SR00819
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 8 Dec 1998
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; IN-SITU PROCESSING; REMEDIAL ACTION; PUMPING; WATER TREATMENT; COLLOIDS; DEMETALLIZATION; SURFACTANTS; FORMATION DAMAGE; MITIGATION

Citation Formats

Seaman, J.C., and Bertch, P.M. In-situ groundwater remediation by selective colloid mobilization. United States: N. p., 1998. Web.
Seaman, J.C., & Bertch, P.M. In-situ groundwater remediation by selective colloid mobilization. United States.
Seaman, J.C., and Bertch, P.M. Tue . "In-situ groundwater remediation by selective colloid mobilization". United States.
@article{osti_321171,
title = {In-situ groundwater remediation by selective colloid mobilization},
author = {Seaman, J.C. and Bertch, P.M.},
abstractNote = {An in-situ groundwater remediation pump and treat technique is described which is effective for reclamation of aquifers that have been contaminated with a mixed, metal-containing waste, and which promotes selective mobilization of metal oxide colloids with a cationic surfactant, preferably a quaternary alkylammonium surfactant, without significantly reducing formation permeability that often accompanies large-scale colloid dispersion, thus increasing the efficiency of the remediation effort by enhancing the capture of strongly sorbing contaminants associated with the oxide phases. The resulting suspension can be separated from the bulk solution with controlled pH adjustments to destabilize the oxide colloids, and a clear supernatant which results that can be recycled through the injection well without further waste treatment. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {12}
}