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 uses a patented micellular structure 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
  • Surfactant-stabilized water-in-oil emulsion with 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