stripping and catalytic oxidation

Stripping is a process in which the passage of and contact with air is forced through a spray of polluted surface or groundwater in order to eliminate contaminants. The contact between water and air jets allows for some of the contaminants to turn from liquid to gaseous states through volatilization. The resulting gas may be stored for later remediation. Stripping is usually used to treat groundwater as part of a Pump and Treat process.

In the catalytic oxidation process, organic vapors, once removed by stripping or SVE of the unsaturated zone of the soil, are oxidized by oxygen in the air on the catalyst porous surface, between 300ºC and 700ºC. The application of this technique allows the elimination of 99% of the organic compounds extracted, resulting in CO₂ and H₂O as byproducts, with no generation of new compounds.