Abstract

AbstractThe performance of nine typical filter media of previously determined pore structure has been determined by the filtration of very dilute suspensious containing spherical particles of known size distribution. The mechanisms of filtration prior to the formation of a macroscopic cake are considered, and the applicability of various filtration laws proposed by Hermans and Bredée to describe these regious of filtration are examined. Regions of “standard‐blocking” filtration are found to occur with each of the filter media examined. The clogging values for the various media over the region of standard blocking are shown to be related quantitatively to the modal value of interfiber pore radius of the media, as measured by the mercury‐intrusion method.

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