In-situ groundwater remediation by selective colloid mobilization
Abstract
An in-situ groundwater remediation pump and treat technique effective for reclamation of aquifers that have been contaminated with a mixed, metal-containing waste, 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.
- Inventors:
-
- New Ellenton, SC
- Aiken, SC
- Issue Date:
- Research Org.:
- UNIV OF GEORGIA RESEARCH FDN
- OSTI Identifier:
- 872021
- Patent Number(s):
- 5846434
- Assignee:
- University of Georgia Research Foundation (Athens, GA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- DOE Contract Number:
- AC09-76SR00819
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- in-situ; groundwater; remediation; selective; colloid; mobilization; pump; treat; technique; effective; reclamation; aquifers; contaminated; mixed; metal-containing; waste; promotes; metal; oxide; colloids; cationic; surfactant; preferably; quaternary; alkylammonium; significantly; reducing; formation; permeability; accompanies; large-scale; dispersion; increasing; efficiency; effort; enhancing; capture; strongly; sorbing; contaminants; associated; phases; resulting; suspension; separated; bulk; solution; controlled; ph; adjustments; destabilize; supernatant; results; recycled; injection; treatment; metal oxide; waste treatment; cationic surfactant; oxide phase; water remediation; containing waste; in-situ groundwater; groundwater remediation; colloid dispersion; controlled ph; /210/405/
Citation Formats
Seaman, John C, and Bertch, Paul M. In-situ groundwater remediation by selective colloid mobilization. United States: N. p., 1998.
Web.
Seaman, John C, & Bertch, Paul M. In-situ groundwater remediation by selective colloid mobilization. United States.
Seaman, John C, and Bertch, Paul M. Thu .
"In-situ groundwater remediation by selective colloid mobilization". United States. https://www.osti.gov/servlets/purl/872021.
@article{osti_872021,
title = {In-situ groundwater remediation by selective colloid mobilization},
author = {Seaman, John C and Bertch, Paul M},
abstractNote = {An in-situ groundwater remediation pump and treat technique effective for reclamation of aquifers that have been contaminated with a mixed, metal-containing waste, 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}
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