Emulsified Zero-Valent Iron

Emulsified Zero-Valent Iron (EZVI) is a water in oil emulsion consisting of nano/micro scale zero-valent iron, surfactant, food grade vegetable oil, and water that reductively dehalogenates halogenated hydrocarbons (e.g. PCE, TCE, CFC, VC). EZVI is manufactured specifically to create an emulsion of micelles which matches the physical chemistry of DNAPLs to deliver reactive iron particles, enabling full miscibility with contaminants in the subsurface. Thus, EZVI is a source area remediation technology.

  • Developed/patented by NASA
  • Field-tested by the U.S. EPA under the SITE Program
  • Primarily used for in-situ DNAPL source area destruction
  • Typical source concentration decrease ~90+% within 3 months
  • The only surfactant-stabilized water-in-oil emulsion containing zero-valent iron particles
  • Hydrophobic, dense emulsion absorbs DNAPL, delivering contaminant to iron
  • In-situ chemical reduction of chlorinated solvent to ethene and water
  • Injection or soil mixing using conventional technologies
  • Does not promote mobilization of DNAPL
  • RemQuest is the largest custom manufacturer/supplier of EZVI, providing reactive, stable emulsions since 2005

RemQuest’s EZVI products have been utilized at multiple locations across the United States as well as internationally. 


EZVI Awards

  • 2007 Induction into the Space Technology Hall of Fame
  • 2006 Federal Laboratory Consortium (FLC) Excellence in Technology Transfer
  • 2005 NASA Government Invention of the Year
  • 2005 NASA Commercialization Invention of the Year