Surfactant enchanced removal of dense nonaqueous phase liquids (DNAPLs) from porous media
Conference
·
OSTI ID:141249
- Colorado School of Mines, Golden, CO (United States)
Fifteen surfactants were investigated for use in enhanced in-situ removal of residual DNAPLs (dense nonaqueous phase liquids) from sandy aquifer materials. Surfactant performance was primarily evaluated based on the ability of the surfactant to enhance solubilization of the organic liquid at low surfactant concentrations while minimizing reduction of the interfacial tension between the organic liquid and water. Other performances criteria evaluated include carbon tetrachloride, chlorobenzene, 1,2-dichloroethane, tetrachloroethylene, and trichloroethylene. Significant differences in performance were observed among the surfactants and related to surfactant structure and composition, as well as organic liquid properties. A rapid screening test was developed to assess the efficiency of the surfactants for field applications.
- OSTI ID:
- 141249
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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