PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2005 | Vol. 11, No. 4 | 363--376
Tytuł artykułu

Deposition and Resuspension of Selected Aerosols Particles on Electrically Charged Filter Materials for Respiratory Protective Devices

Autorzy
Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The primary aim of the study was to analyse the non-steady state of filtration for selected electrostatic filter materials designed for use in respiratory protective devices. The obtained results showed that the filtration process in electrostatic filters was dependent in the main on the following factors: type of the filter material, electrostatic field strength of the material, and the charge of the aerosol. To a lesser degree the filtration process depended on the sign of the charge and the relative humidity of the air. A significant correlation was found between the increase in the penetration and the decrease in reathing resistance while the filter was being loaded. The effect of resuspension (tearing off and re-deposition of dust agglomerates inside the filter) on the filtration process very significant. It was also observed that under certain conditions electrostatic filter materials lost their protection properties.
Wydawca

Rocznik
Strony
363--376
Opis fizyczny
Bibliogr. 11 poz., rys., tab., wykr.
Twórcy
autor
  • Department of Personal Protective Equipment, Central Institute for Labour Protection – National Research Institute, Łódź, Poland, krmak@ciop.lodz.pl
Bibliografia
  • 1. Brown RC, Wake D, Gray R, Blackford DB, Bostock GJ. Effect of industrial aerosols on the performance of electrically charged filter materials. Ann Occup Hyg 1988;32(3):271–94.
  • 2. Brown RC. Effect of electric charge in filter materials. Filtration & Separation 1989;26.
  • 3. Kanaoka C, Emi H, Otani Y, Iiyama T. Effect of charging state of particles on electret filtration. Aerosol Sci Technol 1987;7:1–13.
  • 4. Brown RC. Air filtration, an integrated approach to the theory and applications of fibrous filters. Oxford, UK: Pergamon Press; 1993.
  • 5. Walsh DC, Stenhouse JIT. The effect of particle size, charge, and composition on the loading characteristics of an electrically active fibrous filter material. J Aerosol Sci 1997;2: 307–21.
  • 6. Walsh DC, Stenhouse JIT. Parameters affecting the loading behaviour and degradation of electrically active filter materials. Aerosol Sci Technol 1998;29:419–32.
  • 7. Emi H. Fundamentals of aerosol filtration. KONA 1990;8:83–91.
  • 8. Podgórski A, Rudziński M, Gradoń L. Nonsteady-state filtration of aerosol particles in electret filter structures. Chem Eng Comm 1996;151:125–46.
  • 9. Brown RC, Wake D, Smith PA. An electrically augmented filter made from conducting and dielectric fibres. J Electrostat 1994;33:393–412.
  • 10. Polski Komitet Normalizacyjny (PKN). Respiratory protective devices—particle filters—requirements, testing, marking (Standard No. PN-EN 143:2004). Warszawa, Poland; PKN; 2004. In Polish.
  • 11. Polski Komitet Normalizacyjny (PKN). Respiratory protective devices—filtering half masks to protect against particles— requirements, testing, marking (Standard No. PN-EN 149:2004). Warszawa, Poland: PKN; 2004. In Polish.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-2c093308-7538-446b-9d9e-8d93f5959f17
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.