[ EZVI/Products ]


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 is manufactured specifically to create an emulsion of micelles 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
  • 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
  • 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