SourceKill is an emulsified zero valent iron for chlorinated solvent source remediation. It is manufactured exclusively for Cascade by TEA, Inc., the first licensee of this NASA patent for DNAPL remediation at Cape Canaveral. SourceKill uses chemical reduction to primarily target known or suspected DNAPL source zones.
SourceKill involves placing micro-scale zero valent iron (ZVI) particles into a surfactant-stabilized, biodegradable water-in-oil emulsion. This emulsion is injected into the DNAPL-contaminated zones. The DNAPL is then pulled (sequestered) into the emulsion where the CVOCs react with the ZVI. Through a process known as reductive dehalogenation, the DNAPL and its daughter products are degraded into ethene. The by-products are finally broken down through biological activities in the subsurface.