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2. Fiber filter separation
Fiber filter filtration is still the most widely used process for purifying air of suspended particles, as it generally offers a good compromise between high efficiency and acceptable energy costs.
Collective or individual protection systems (ventilation filters, respiratory protection devices) or industrial dust collectors (bag filters or cartridge filters) are composed of non-woven fibrous media, i.e. "a manufactured product made of a web or mat of individual fibers, directly or randomly oriented, bonded by friction, cohesion or adhesion", according to the European Disposal and Nonwovens Association.
These media are characterized by grammage (G) (surface mass of the fibrous media), thickness (Z) which typically varies between 20 and 5,000 µm, compactness (α) ratio...
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Fiber filter separation
Alternatives to filtering media
Bibliography
Standards and norms
- Appareils de protection respiratoire ; Demi-masques filtrants contre les particules : Exigences, essais, marquage - NF EN 149+A1 - 2009
- Respiratory protection devices – Recommendations for selection, use, care and maintenance – Guide. - NF EN 529 - 2006
- Respiratory protection devices – Compressed gases for self-contained breathing apparatus. - NF EN 12021 - 2014
- Filtres à air à haute efficacité...
Regulations
Nanomaterials – Definitions, toxicological risks, characterization of occupational exposure and prevention measures, ED 6050, INRS, Paris, September 2012, 48 p.
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Directory
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French Society for Fluid-Particle Separations (SF2P)
French Aerosol Research and Study Association (ASFERA)
...
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