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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 to deliver reactive iron which mimics the physical chemistry of DNAPL. It has the ability to mix with DNAPLs present in the subsurface environment. 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
  • Certified Space Technology
  • RemQuest, TEA's exclusive provider of products and technologies, is the largest custom manufacturer/supplier of EZVI, providing reactive, stable emulsions since 2005

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

EZVI Awards:

  • 2007 NASA Induction into the 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