Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1997-02-28
1998-12-08
Woo, Jay H.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210727, 210747, C02F 152
Patent
active
058464344
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.
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Bertch Paul M.
Seaman John C.
Morrison Betsey J.
University of Georgia Research Foundation
Woo Jay H.
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