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SURFACTANT-OXIDANT CO-APPLICATION FOR SOIL AND GROUNDWATER REMEDIATION
Dahal, G., J. Holcomb, and D. Socci.
Remediation Journal, Vol 26 No 2, 101-108, 2016
In situ chemical oxidation (ISCO) treatments can leave sites with temporarily clean groundwater that is subject to contaminant rebound when sorbed and free-phase contaminants leach back into the aqueous phase. Surfactant-enhanced in situ chemical oxidation (S-ISCO®) uses a combined oxidant-surfactant solution to provide optimized contaminant delivery to the oxidants for destruction via desorption and emulsification of the contaminants by the surfactants. This paper provides an overview of S-ISCO technology, followed by a cleanup case study at a coal tar-contaminated site in Queens, New York. S-ISCO implementation over a 5-month period consisted of simultaneous injections of VeruSOL-3, sodium persulfate, and sodium hydroxide into 34 wells. Data points from the site illuminate how S-ISCO delivers desorbed contaminants without uncontrolled contaminant mobilization, as desorbed and emulsified contaminants are immediately available to the simultaneously injected oxidant for reaction. This paper is Open Access at http://onlinelibrary.wiley.com/doi/10.1002/rem.21461/full
Remediation Journal, Vol 26 No 2, 101-108, 2016
In situ chemical oxidation (ISCO) treatments can leave sites with temporarily clean groundwater that is subject to contaminant rebound when sorbed and free-phase contaminants leach back into the aqueous phase. Surfactant-enhanced in situ chemical oxidation (S-ISCO®) uses a combined oxidant-surfactant solution to provide optimized contaminant delivery to the oxidants for destruction via desorption and emulsification of the contaminants by the surfactants. This paper provides an overview of S-ISCO technology, followed by a cleanup case study at a coal tar-contaminated site in Queens, New York. S-ISCO implementation over a 5-month period consisted of simultaneous injections of VeruSOL-3, sodium persulfate, and sodium hydroxide into 34 wells. Data points from the site illuminate how S-ISCO delivers desorbed contaminants without uncontrolled contaminant mobilization, as desorbed and emulsified contaminants are immediately available to the simultaneously injected oxidant for reaction. This paper is Open Access at http://onlinelibrary.wiley.com/doi/10.1002/rem.21461/full
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