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Perhaps the main reason passive adsorption systems do not work well is because the geometry and diffusion characteristics of the display case permit all pollutants equal access to the object and the adsorbent bed. This certainly reduces the overall effects on the object, but it does not stop them completely—nor, in many cases, does it adequately slow them down.

Active systems, however, can quickly recirculate the air volume within a microenvironment. Coupled with a high adsorbent efficiency, a successful removal system can be demonstrated.

Work Completed

  • Optimized the mechanical application of in situ active filtration and determined simple methods to estimate the lifespan of the filter media
  • Developed a clearer understanding of the risks of pollutant desorption from specific media
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