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Ferox Plus Emulsified ZVI (eZVI)
The Hepure team boasts over 50 years of experience in groundwater and soil remediation and Hepure’s Ferox zero valent iron (ZVI) has become an industry standard for in situ chemical reduction (ISCR) for the remediation of volatile organic compounds (VOCs) and metals. Our commitment to scientific innovation has resulted in the introduction of Ferox Plus emulsified zero valent iron (eZVI) for groundwater and soil remediation. emulsified ZVI slurry Ferox Plus emulsified zero valent iron (eZVI) combines Ferox ZVI with emulsified vegetable oil, vitamins, and nutrients in a site-ready formulation. Ferox Plus is designed to stimulate both chemical reduction and anaerobic biological reductive pathways in a long-lasting and easily distributable format.
Ferox Plus has been successfully emplaced at several VOC sites to date. Field reports include comments about the advantages of the site-ready slurry formulation, the ease with which the slurry can be injected and distributed in the subsurface, as well as the demonstrated increase in radius of influence (ROI) at depth.
Our ability to source the highest grades of materials and our control of the manufacturing process allows us to offer eZVI at the most cost-effective price in the marketplace.
Reductive reactions involving micron-scale zero valent iron (ZVI) have been proven effective and cost efficient for in situ remediation of sites containing chlorinated solvents and certain reducible metals and radionuclides. The use of biodegradable organic liquids, such as vegetable oils as an additive, has more recently proven to extend the effectiveness and efficiency of ZVI. The EVO performs several functions in Ferox Plus. First, it solubilizes the chlorinated volatile organic compounds (CVOCs), enhancing their availability in the aqueous phase. Secondly, it creates an environment that maximizes contact between ZVI particles and solubilized CVOCs. Finally, biodegradation of the EVO promotes biological reductive dehalogenation.
The emulsified system consists of a surfactant-stabilized oil-in-water emulsion with the iron particles contained within the aqueous interior of the emulsion droplet (see Figure 1). The smallest iron particles produce the most stable iron-emulsion system; thus, it is desirable in these systems to use micron-scale iron particles. Ferox Plus is ideal for source areas where chlorinated dense non-aqueous phase liquids (DNAPL) and/or high dissolved concentrations of CVOC’s are present. Similar eZVI mixtures have shown to be very effective in vadose zone as well as saturated zone applications. Hepure’s Ferox ZVI has proven to be a market leader in reactivity and effectiveness. Combining our high quality Ferox ZVI with EVO produces an eZVI product with superior reactivity and longevity at a cost effective price.