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Deposition of aerosol nanoparticles in filters composed of fibers with porous shells

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Abstract

The diffusion deposition of submicron aerosol particles in model filters consisting of fibers covered with permeable porous shells is studied. An ordered system of parallel cylinders arranged perpendicular to the flow is used as a model filter. The results of calculations are given for the dependences of the capture coefficient on the shell radius, the shell permeability, the packing density of the filters, the particle radius, and the flow velocity. Calculations are performed within a wide range of Peclet numbers. It is shown that the capture coefficient and the quality criterion γ of a filter increase with the diffusion mobility of particles and shell permeability, as well as that the dependence of the quality criterion on the radius of permeable shells has a maximum. It is also shown that the capture coefficients for fibers with porous shells, calculated using the cell model and the isolated row of fibers, almost coincide with one another.

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Authors and Affiliations

  1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    V. A. Kirsh

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  1. V. A. Kirsh
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Original Russian Text © V.A. Kirsh, 2007, published in Kolloidnyi Zhurnal, 2007, Vol. 69, No. 5, pp. 655–660.

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Kirsh, V.A. Deposition of aerosol nanoparticles in filters composed of fibers with porous shells. Colloid J 69, 615–619 (2007). https://doi.org/10.1134/S1061933X07050110

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  • DOI: https://doi.org/10.1134/S1061933X07050110

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