Ultra Low Concentration Adsorption Equilibria
Abstract
This paper discusses innovative research on the subject of protecting the warfighter from hazardous vapors by means of employing chemical filters containing microporous, nano-structured sorbents. Specifically this work focuses on novel experimental and modeling methods to characterize and predict at ultra-low chemical vapor concentrations the protection afforded by adsorption-based vapor filtration systems. The motivation for this work is to provide appropriate respiratory protection for the warfighter at pace with a changing health regulatory environment where exposure limit values have decreased, particularly for the workplace and general population. Recently, air pollution abatement and toxic industrial chemical exposure concerns have broadened the interest in vapor filtration, especially in the determination of estimates used in the prediction of breakthrough times and filter element replacement. This work directly addresses these issues and should lead to a substantial increase in confidence about estimates of lowlevel breakthrough times for standard adsorption-based vapor filter systems and a better understanding of the adsorption process at ultra-low concentrations. Similar data have been used in the design and construction of GB and HD Solid-State Vapor Generators for U.S. Army Chemical Materials Agency as calibration devices for their workplace air monitors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2006
- Accession Number
- ADA481722
Entities
People
- Bryan J. Schindler
- John J. Mahle
- Leonard C. Buettner
- M. Douglas LeVan