NDLI: Penetration of aerosol particles through fine fibrous filters

Content Provider	Springer Nature Link
Author	Kirsh, A. A. Khmelevskiy, V. O. Budyka, A. K. Kirsh, V. A.
Copyright Year	2011
Abstract	The penetration of submicron particles through fine-fibrous filtering materials is studied. The existing theoretical approach to the description of the fine filtration of aerosols on the basis of the fan model filter is compared with experiments performed on a TSI 31–60 unit. Monodisperse aerosols of sodium chloride and dioctylphthalate are passed through several layers of filtering materials consisting of ultrafine polydisperse fibers. From measurements, it follows that the logarithm of the penetration coefficient of particles with radius r = 0.05–0.20 μm is directly proportional to the number of layers. The most penetrating particle radii r* found from experiments within this range of r and the collection coefficients corresponding to them are in good agreement with the calculations performed for the model on fan filter in the mode of diffusion deposition of finite-size particles with consideration for the slip of a gas over fibers, the action of retarded van der Waals forces, and also the polydispersity of fibers and the structural heterogeneity of filters. The penetrations measured for particles with r < 0.04 μm do not correspond to the exponential law of filtration. The penetration is increased in each subsequent layer of material.
Starting Page	891
Ending Page	897
Page Count	7
File Format	PDF
ISSN	00405795
Journal	Theoretical Foundations of Chemical Engineering
Volume Number	45
Issue Number	6
e-ISSN	16083431
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-12-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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