Pressure drop and service life predictions for respirator canisters
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| Published in | American Industrial Hygiene Association journal Vol. 62; no. 3; pp. 288 - 294 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Fairfax, VA
American Industrial Hygiene Association
01.05.2001
Taylor & Francis Ltd |
| Subjects | |
| Online Access | Get full text |
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| Abstract | Abstract only |
|---|---|
| AbstractList | Abstract only Respirator canister designers and manufacturers have a responsibility to provide canisters with increasingly higher capacity and longer service life due to rising safety standards in the workplace. Optimizing the service life of conventional canisters is not about simply increasing the depth of adsorbent present in the canister because this will lead to an increased resistance to airflow, and a greater physiological burden on the user. To optimize canister design it is necessary to establish how the physical dimensions of the adsorbent bed affect breathing resistance and adsorption performance. The study presented in this article investigated both the pressure drop and cyanogen chloride chemisorption performance of a granular activated carbon adsorbent. Results obtained show relationships that correlate adsorption performance and pressure drop to the quantity of adsorbent, the linear flow velocity, and, where applicable, the challenge vapor concentration. Altering the linear velocity by increasing cross-sectional surface area has a more beneficial impact on canister performance than altering the adsorbent bed depth. The application of these relationships to the design of canisters is demonstrated. |
| Author | PHILLIPS, Paula L OSMOND, Neale M |
| Author_xml | – sequence: 1 givenname: Neale M surname: OSMOND fullname: OSMOND, Neale M organization: Chemical and Biological Defence, DERA Porton Down, Salisbury, Wilts, SP4 0JQ, United Kingdom – sequence: 2 givenname: Paula L surname: PHILLIPS fullname: PHILLIPS, Paula L organization: Chemical and Biological Defence, DERA Porton Down, Salisbury, Wilts, SP4 0JQ, United Kingdom |
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| Copyright | 2001 INIST-CNRS Copyright American Industrial Hygiene Association May/Jun 2001 |
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| DOI | 10.1202/0002-8894(2001)062<0288:PDASLP>2.0.CO;2 |
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| Keywords | Inorganic adsorbate Human Chemisorption Service life Cyanogen Chlorides Toxic gas Work place Person protection Respirators Occupational hygiene Inorganic adsorbent Occupational exposure Individual safety equipment Gas solid adsorption Protective mask Granular material Pressure drop Activated carbon Performance Wet vapor Breakthrough curve |
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| Snippet | Abstract only Respirator canister designers and manufacturers have a responsibility to provide canisters with increasingly higher capacity and longer service life due to... |
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| SubjectTerms | Activated carbon Adsorbents Adsorption Applied sciences Atmospheric pollution Chloride Design Exact sciences and technology Filters Flow velocity Gases Indoor air quality Indoor pollution and occupational exposure Industrial safety Physiology Pollution Prevention Product design Safety standards Studies |
| Title | Pressure drop and service life predictions for respirator canisters |
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