Superfund Innovative Technology Evaluation (SITE)
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
|Demonstration Bulletin Adsorption-Integrated-Reaction
(AIR2000) Process KSE, Inc.
Technology Description: The AIR2000 technology was developed by KSE, Inc. (KSE) of Amherst, Massachusetts. The demonstration unit was designed and manufactured by Trojan Technologies, Inc. of London, Ontario. The AIR2000 unit treats air streams containing volatile organic compounds (VOCs). The technology was evaluated during a U.S. Environmental Protection Agency Superfund Innovative Technology Evaluation (SITE) Program demonstration at the Stamina Mills Superfund site in North Smithfield, Rhode Island from August to October 1999. The SITE program evaluated the technology's ability to treat air containing trichloroethene (TCE) and trace levels of other chlorinated organic compounds. The air stream for this evaluation was the off-gas from the existing soil and groundwater remediation system: soil vapor extraction (SVE) and multiphase extraction with groundwater stripping. The influent concentration to the AIR2000 unit ranged from 10 to 78 parts per million by volume (ppmv).
In the AIR2000 technology, a contaminated air stream flows into a photocatalytic reactor where the VOCs are adsorbed onto the surface of a proprietary catalytic adsorbent that is continuously illuminated with ultraviolet light. The ultraviolet light destroys the adsorbed, concentrated VOCs through enhanced photocatalytic oxidation. KSE claims that the AIR2000 process offers advantages over other photocatalytic technologies because of the high activity, stability, and selectivity of the photocatalyst. Analytical results compiled prior to the SITE demonstration indicate that the photocatalyst is highly resistant to deactivation, even after thousands of hours of operation in the field.