METAFIX® represent a unique treatment approach for soil, sediment, industrial wastes, and groundwater contaminated with heavy metals. METAFIX® Reagents are customized to cost effectively address even the most challenging site conditions. METAFIX® Reagents are formulated blends of reducing agents, reactive minerals, mineral activators, catalysts, and pH modifiers. Following placement of METAFIX® Reagent into the treatment zone, a number of physical and chemical processes combine to create geochemical conditions under which common heavy metals are subjected to reduction, adsorption, precipitation, and conversion to stable sulfide and iron-sulfide precipitates. These heavy metal sulfide precipitates have greater stability than metal hydroxide precipitates which are formed with traditional metals treatment approaches based on pH adjustment. Moreover, since METAFIX® utilizes multiple mechanisms, it allows for robust performance in challenging environments, with high metals concentrations, high concentrations of organic contaminants such as solvents, high salt content, or extreme pH levels.
Typical Applications
- Direct push injection
- Hydraulic and pneumatic fracturing
- Direct soil mixing
- Permeable Reactive Barriers
Benefits at a glance
- The proven ability to address multiple heavy metals including; Al, As, Cd, Cu, Cr, Hg, Ni, Pb, Se, V, and Zn
- Superior Cr(VI) treatment with the formation of more stable mixed (Cr, Fe) hydroxides
- The capability of treating comingled plumes of heavy metals and chlorinated solvents
- Low overall treatment costs based on lower reagent dosing rates, as low as 0.1% – 4% (wt/wt), versus other metals treatment technologies
- The treatment mechanism is not dependent on alkalinity for removal of metals, therefore not susceptible to rebound when the matrix pH returns to ambient levels