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The separation of micron‐size particles from air by diffusiophoresis
Author(s) -
Meisen A.,
Bobkowicz A. J.,
Cooke N. E.,
Farkas E. J.
Publication year - 1971
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450490404
Subject(s) - laminar flow , mechanics , work (physics) , sizing , particle (ecology) , separation (statistics) , flow (mathematics) , particle size , materials science , physics , classical mechanics , chemistry , thermodynamics , mathematics , geology , oceanography , statistics , organic chemistry
The continuous separation of micron‐size particles from air by diffusiophoresis in a parallel plate collector was studied theoretically. Two models for the particle behavior were considered. Model I was based on the assumption that the particles adopt the local fluid velocity whereas the Schmitt‐Waldmann equation was used to determine the diffusiophoretic velocity in Model II. The latter also included thermophoretic and gravitational effects. The two models yielded similar results when diffusiophoresis was predominant. The theoretical results were also used in the sizing of an experimental particle collector. The collector, which operated under laminar flow conditions, was capable of removing the particles effectively and its performance conformed with the theoretical work.