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8257650 
Meetings & Symposia 
Field demonstration of surfactant-enhanced DNAPL remediation: Case studies 
Shiau, BJ; Hasegawa, MA; Brammer, JM; Goodspeed, M; Carter, T; Harwell, JH; Sabatini, DA; Knox, RC; Szekeres, E 
2001 
0 
Abstracts of Papers of the American Chemical Society
ISSN: 0065-7727 
41 
1034-1047 
English 
Researchers at Surbec-ART Environmental (Norman, OK) and the University of Oklahoma completed several field demonstrations using the surfactant flushing technique. Among these, two case studies were presented including Alameda Point, CA, and Spartan Chemical Co Superfund Site, MI. Representative contaminants observed at the sites were trichloroethylene (TCE) and trichloroethane (Alameda Point), and complex mixed wastes of methylene chloride, TCE, ketones, and BTEX (Spartan Chemical). Significant NAPL removal (> 90%) could be achieved in several pore volumes of surfactant injection and system operation. Enhanced solubilization was observed for various contaminants throughout the test cell during the surfactant injection phase. Concentrations of the highly water-miscible contaminants, acetone, methyl ethyl ketone, and methyl isobutyl ketone, showed significant increase during the surfactant injection phase. Greater enhancement was observed in the downgradient direction of the flow in the cell.