Abstract
AbstractDense nonaqueous phase liquids (DNAPLs), in particular chlorinated solvents such as trichloroethene, pose groundwater contamination problems at hazardous waste sites across North America. The mobility of DNAPLs in the subsurface, their low aqueous solubility, and the heterogeneity of typical aquifer systems combine to create conditions that inhibit the rapid remediation of DNAPL sites by traditional pump‐and‐treat methods. Surfactant‐enhanced methods for DNAPL‐site remediation accelerate the pace of remediation in granular aquifer systems, e.g., alluvium and outwash. The importance of adequate hydraulic conductivity and aquitard conditions is stressed in the application of surfactant‐enhanced aquifer remediation (SEAR).
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