Dan Leigh will present on the recent market trend of adding ultra fine Zero Valent Iron (ZVI) into the subsurface in a variety of manners to help treat subsurface contamination. Combining ultra fine ZVI and organic reagents establishes a symbiotic relationship that directly degrades recalcitrant chlorinated compounds including solvents, pesticides and other compounds treated via the reductive pathway such as energetics. In addition to creating reductive conditions, ultra fine ZVI has several advantages over historic iron additives including ability to distribute in a wide variety of sediment types, and establishment and maintenance of groundwater conditions conducive to reductive treatment.  

Dan will emphasize how ultra fine ZVI can be cost effectively applied with other reagents including Evonik’s ELS® and GEOFORM® Soluble reagents to promote chemical, biological and biogeochemical reductive pathways in a single application. 

Evonik’s ISCO Technology Applications Manager Josephine Molin discussed methods of establishing contact between in situ chemical oxidation (ISCO) reagents and contaminants of concern. 

We covered such topics as:

• The importance of establishing contact
• Critical factors that may limit establishing contact
• Design elements
• Relevant contaminant and reagent characteristics
• Key attributes and limitations of common application methods

This webinar is part of a series of webinars by Evonik aimed at the basic elements of a fundamental ISCO application including chemistry, design, and monitoring, and now discussing the field application of KLOZUR® persulfate reagents.