In Situ , Field Scale Evaluation of Surfactant Enhanced DNAPL

DOE / ER / 14721 In - Situ , Field Scale Evaluation of Surfactant - Enhanced DNAPL Recovery Using a Single - Well , “ Push - Pull ” Test Final Report

Surfactant Enhanced In-situ Remediation of DNAPL Impacted Soil and Groundwater - Montreal Refinery Case Study

A Montreal chemical refinery reduced the dichlorobenzene and other dense non-aqueous phase liquid (DNAPL) impacts on the soil and groundwater where a railway line is adjacent to an above ground storage tank farm. Ivey-sol surfactant mixtures were injected three times during a two week pilot test, into a series of in-situ wells. The soil and groundwater matrix experienced an induced partial vacu...

Multi objective optimization of the setup of a surfactant-enhanced DNAPL remediation.

Surfactant-enhanced aquifer remediation (SEAR) is widely considered a promising technique to remediate dense nonaqueous phase liquid (DNAPL) contaminations in-situ. The costs of a SEAR remediation are important and depend mostly on the setup of the remediation. Costs can be associated with the installation of injection and extraction wells, the required time of the remediation (and thus labor c...

Pathway Identification During Successful ISCR-Enhanced Bioremediation of a TCE DNAPL Source Area

Groundwater at an active manufacturing facility on an 80-acre site in Portland, Oregon is impacted by TCE and its degradation products. Operations at the facility began in 1980, and included the use of TCE from approximately 1980 to 1989. TCE and/or TCE-containing wastewater were released to the subsurface in the early 1980s, roughly between 1980 and 1984. In 2006, concentrations of TCE and cis...

Field demonstration of DNAPL dehalogenation using emulsified zero-valent iron.

This paper describes the results of the first field-scale demonstration conducted to evaluate the performance of nanoscale emulsified zero-valent iron (EZVI) injected into the saturated zone to enhance in situ dehalogenation of dense, nonaqueous phase liquids (DNAPLs) containing trichloroethene (TCE). EZVI is an innovative and emerging remediation technology. EZVI is a surfactant-stabilized, bi...