Estimating service lives of organic vapor cartridges II: a single vapor at all humidities

Journal of Occupational and Environmental Hygiene
Gerry O Wood

Abstract

A widely used equation model for estimating service lives of organic vapor air-purifying respirator cartridges has been updated with more recent research results. It has been expanded to account for effects of high relative humidities. Adsorption capacity competition between water vapor and organic vapor is largely explained by mutual exclusion of adsorption volume of the activated carbon. The Dubinin/Radushkevich equation is used to describe the adsorption isotherms of both water and organic vapors. Effects of relative humidity and adsorbed water on adsorption rates are described by an empirical correlation with breakthrough times. The dynamic natures of adsorption and competition are incorporated using an expanding zone model with displaced water rollup. The complete model has been tested and verified with published and unpublished data from many sources.

References

Sep 1, 1976·American Industrial Hygiene Association Journal·G O Nelson, A N Correia
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Apr 1, 1990·American Industrial Hygiene Association Journal·Y H Yoon, J H Nelson
Nov 1, 1987·American Industrial Hygiene Association Journal·D W Underhill
Oct 1, 1983·Journal of the History of the Behavioral Sciences·G Windholz
Jan 15, 2000·American Industrial Hygiene Association Journal·K H Kawar, D W Underhill
Oct 25, 2001·The Journal of Organic Chemistry·Bradley J. BackesJonathan A. Ellman

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Citations

Jul 14, 2005·Journal of Occupational and Environmental Hygiene·Gerry O Wood
Sep 23, 2011·Journal of Occupational and Environmental Hygiene·Gerry O Wood, Jay L Snyder
Jan 29, 2014·Journal of Environmental Health Science & Engineering·Mehdi JahangiriMohammad Reza Ganjali
Sep 30, 2015·Journal of Occupational and Environmental Hygiene·Melissa CheckyCassidy Javner
Apr 25, 2007·Journal of Occupational and Environmental Hygiene·Gerry O Wood, Jay L Snyder
Dec 30, 2020·International Journal of Occupational Safety and Ergonomics : JOSE·Serhii CheberyachkoOleg Deryugin

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