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Title: 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:
 [1];  [2]
  1. (New Ellenton, SC)
  2. (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) SRELA
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 = {1998},
month = {1}
}

Patent:

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