In-situ groundwater remediation by selective colloid mobilization

Seaman, John C; Bertch, Paul M

In-situ groundwater remediation by selective colloid mobilization

Patent · Thu Jan 01 04:00:00 EST 1998

OSTI ID:872021

Seaman, John C ^[1]; Bertch, Paul M ^[2]

New Ellenton, SC
Aiken, SC

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.

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Research Organization:: UNIV OF GEORGIA RESEARCH FDN

DOE Contract Number:: AC09-76SR00819

Assignee:: University of Georgia Research Foundation (Athens, GA)

Patent Number(s):: US 5846434

OSTI ID:: 872021

Country of Publication:: United States

Language:: English

References (15)

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In-situ groundwater remediation by selective colloid mobilization

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References (15)

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