Zero Valent Iron Injection

A new technology for the treatment of residual contamination attributable to the Chlorinated Volatile Organic Compounds (Cl VOCs) in the subsurface soils has been tested and applied in the field by In-Situ Fixation, Inc (I-SF). I-SF is the first Company to inject and evenly distribute fine iron particles into the soil in a slurry batch process, utilizing an auger. The fine iron particles consisted solely of carefully sized metallic Zero Valent Iron (Fe0). The Fe0 injection can be used separately or simultaneously with the SM/TESVE process described previously. In this application, iron, steam and hot air are simultaneously injected into the soil during mixing. The steam and air quickly remove the majority of the VOCs and the injected Fe0 continues the reaction process where a reducing chemical state results in the de-chlorination of the remaining VOCs. The ultimate result of this reaction process is the in-situ removal of over 98% of the Cl VOCs from the soil.

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