Penetration of nanoparticles through fibrous filters perforated with defined pinholes

Mouret, Guillaume; Thomas, Dominique; Chazelet, Sandrine; Appert-Collin, Jean-Christophe; Bémer, Denis

doi:10.1016/j.jaerosci.2009.04.010

Cited by 34 publications

(19 citation statements)

References 20 publications

(20 reference statements)

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“…Due to this social concern, the containment of airborne nanoparticles and hazardous particulate matter during production processes is essential in order to reduce worker exposure as much as possible and protect the environment. Fibrous media are a widely used solution, and the question of penetration of nanoparticles through the media [2][3][4] and clogging [5,6] of filters is still being investigated.…”

Section: Introductionmentioning

confidence: 99%

Pressure drop model for nanostructured deposits

Thomas

Ouf

Gensdarmes

et al. 2014

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 99%

Pressure drop model for nanostructured deposits

Thomas

Ouf

Gensdarmes

et al. 2014

Separation and Purification Technology

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“…They found for particles of all sizes that leak size was the largest factor affecting the number of particles inside the face piece of the respirator worn on the manikin, although for small leaks, NP were more likely than larger particles to be found inside the face piece of disposable N95 FFRs. Similarly, Mouret et al (2009) found that for fibrous filters perforated with defined pinholes, penetration increased as particle size decreased.…”

Section: 2422mentioning

confidence: 80%

“…Clearly any filters used in an LEV system need to be coupled with well-designed filter housings that prevent the potential for filter bypass. This is of particular importance for NP because bypass leaks could potentially be of more consequence for particles with diameters near the MPPS than for smaller sized or larger sized particles (Mouret et al, 2009). Larger bypass leaks and mechanical or chemical damage to the filter media itself can allow the passage of particles of all sizes, rather than only those particles near the MPPS.…”

Section: Airborne Effluent Filtrationmentioning

confidence: 99%

Radiation Safety Aspects of Nanotechnology

Hoover¹,

Myers²,

Cash³

et al. 2017

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LEGAL NOTICE This Report was prepared by the National Council on Radiation Protection and Measurements (NCRP). The Council strives to provide accurate, complete and useful information in its documents. However, neither NCRP, the members of NCRP, other persons contributing to or assisting in the preparation of this Report, nor any person acting on the behalf of any of these parties: (a) makes any warranty or representation, express or implied, with respect to the accuracy, completeness or usefulness of the information contained in this Report, or that the use of any information, method or process disclosed in this Report may not infringe on privately owned rights; or (b) assumes any liability with respect to the use of, or for damages resulting from the use of any information, method or process disclosed in this Report, under the Civil Rights Act of 1964, Section 701 et seq. as amended 42 U.S.C. Section 2000e et seq. (Title VII) or any other statutory or common law theory governing liability. Disclaimer Any mention of commercial products within NCRP publications is for information only; it does not imply recommendation or endorsement by NCRP.

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“…3,4 In general, brous lters can be classied as spunbonded lters, needle-punched lters, melt blown lters and electrospun lters. Among them, traditional lters, such as spun-bonded lters and needle-punched lters, capture the particles primarily by a mechanical ltration mechanism.…”

Section: Introductionmentioning

confidence: 99%

Design of electret polypropylene melt blown air filtration material containing nucleating agent for effective PM2.5 capture

et al. 2018

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Particulate matter (PM) pollution has become a serious threat to public health, climate and ecosystems.Therefore, filtration materials with high filtration efficiency and low air resistance are in urgent need. Electret filters that can significantly improve filtration efficiency without increasing pressure drop are widely used for air filtration. However, long-term maintenance of the electrical charges on electret filters, particularly at high temperatures and in wet conditions, is still a challenge. Herein, we report the fabrication of a novel electret filter with a fluffy structure, high porosity and satisfactory filtration stability using polypropylene (PP) as the matrix polymer and magnesium stearate (MgSt) as the charge enhancer. Benefiting from the fluffy structure created by melt blown at a large die-to-collector distance (DCD), the pressure drop decreased from 67.0 Pa to 52.9 Pa at an air flow rate of 85 L min À1

show abstract

Penetration of nanoparticles through fibrous filters perforated with defined pinholes

Cited by 34 publications

References 20 publications

Pressure drop model for nanostructured deposits

Pressure drop model for nanostructured deposits

Radiation Safety Aspects of Nanotechnology

Design of electret polypropylene melt blown air filtration material containing nucleating agent for effective PM2.5 capture

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