RegenOx uses a solid alkaline oxidant that employs a sodium percarbonate complex with a multi-part catalytic formula. The product is delivered as two parts (oxidizer and activator) that are combined and injected into the subsurface. Once in the subsurface, the combined product produces both direct oxidation reactions and an effective surface-mediated oxidation reaction (Figure 1) comparable to that of Fenton's Reagent but without a violent exothermic reaction.

RegenOx provides a unique catalytic surface (activator complex) for both the contaminant and the RegenOx oxidizer complex to interface. Once the contaminant, oxidizer complex and activator complex come together oxidation reactions take place more frequently due to the increased surface area provided by the RegenOx catalytic surface. Reactions can still take place without the catalytic surface via direct oxidation however, surface-mediated oxidation is more efficient.

RegenOx generates a unique suite of oxidation reactions that are responsible for the rapid destruction of contaminants, they are as follows:

Direct Oxidation - this most basic of processes results from the direct transfer of electrons from the contaminant to the oxidant, in turn the contaminant is oxidized and the oxidant, the electron acceptor, is reduced. This process does not require a catalytic surface.

Surface Mediated Oxidation - this process takes place in two stages and is responsible for the majority of RegenOx - based contaminant destruction. First, the activator complex (catalytic surface) coats the subsurface, and second, the oxidizer complex and contaminant react with the activator complex where oxidation reduction reactions take place more frequently. The advantages of Surface-Mediated Reactions include:

• Increased Efficiency - brings oxidant and contaminant together - isolates oxidative reaction from soil matrix effects
• Adjustable Reaction Rates
• Can be accomplished by varying oxidator to activator ratios
• Positional Longevity
• Activator mobility in the subsurface can be adjusted by injection design

Free Radical Oxidation - RegenOx is capable of promoting the propagation reactions that yield a mixture of free radicals. Free radicals react with water to produce oxygen for oxidation. The free radicals formed by RegenOx include: the Perhydroxyl Radical, Hydroxyl Radical and the Superoxide Radical.