Written by Steve Henshaw, P.G., President & CEO, EnviroForensics, in Collaboration with Keith Gaskill, L.P.G., Project Manager and Geochemist, EnviroForensics
As seen in the May 2011 issue of Cleaner & Launderer
Zero-valent iron (ZVI) has been used in the groundwater remediation industry for several decades. Typically, granular scale ZVI was emplaced in trenches serving as a permeable reactive barrier wall, whereby contaminated groundwater would flow through the wall and volatile organic compounds (VOCs) like Perc would react with the material and breakdown.
This technology worked so well that scientists started applying the ZVI into contamination source areas and hot spots. Recent advances have produced smaller scale iron particles that can be mixed into a slurry and pumped into the ground through the use of pre-existing injection technologies. Continue reading “Zero-Valent Iron Shows Promise As a Strong Chemical Reducer of Perc”