In-situ groundwater remediation by selective colloid mobilization
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.
- Research Organization:
- Univ. of Georgia, Athens, GA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-76SR00819
- Assignee:
- Univ. of Georgia Research Foundation, Athens, GA (United States)
- Patent Number(s):
- US 5,846,434/A/
- Application Number:
- PAN: 8-808,253
- OSTI ID:
- 321171
- Resource Relation:
- Other Information: PBD: 8 Dec 1998
- Country of Publication:
- United States
- Language:
- English
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