Soil and Groundwater Remediation

MetaFix® Reagent webinars

Our METAFIX® Reagents are customized formulations of reducing compounds, reactive minerals, mineral activators, catalysts, and pH modifiers for cost-effective treatment of heavy metals at even the most challenging sites. METAFIX® is capable of treating mixed heavy metals and chlorinated solvents. We will show you how after METAFIX® is incorporated, common heavy metals undergo reduction, adsorption, precipitation, and conversion to stable sulfide and iron sulfide precipitates. 




This webinar will describe the physical, chemical, and microbiological processes promoted by METAFIX® and EHC® Reagents and how they work to remove soluble heavy metals, with a focus on arsenic, chromium, lead, and mercury. Treatment of heavy metals in soils and groundwater is based on their conversion from soluble to insoluble forms by promoting precipitation, coprecipitation, and adsorption reactions. These reactions are controlled primarily by pH, Eh, sulfate/sulfide and ferrous/ferrous chemistry, and the availability of metabolizable organic carbon.

Dr. Alan Seech will provide an overview of heavy metal treatment theory and introduce METAFIX® Reagents. METAFIX® Reagents are site-specific formulations of ZVI, other reducing agents, reactive minerals, adsorbents, and pH modifiers. Treating soil or groundwater with METAFIX® results in the formation of stable sulfide and iron sulfide precipitates that have greater stability than conventional alkaline metal treatment methods.

Brianna Desjardins and Brant Smith discuss the lab-scale testing that our Environmental Solutions Laboratory typically performs for EHC® Reagent, ELS® Microemulsion, KLOZUR® persulfate, METAFIX® Reagent, and hydrogen peroxide. Testing, a critical element to successful implementation of remediation technologies, is used to develop design parameters, evaluate potential issues, ensure regulatory compliance, and demonstrate a conceptual approach prior to field deployment.