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CHARACTERISTICS OF FILTER‐AIDS
Author(s) -
Picksley Mark A.,
Reed Robert J. R.
Publication year - 1989
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1989.tb04623.x
Subject(s) - filtration (mathematics) , filter (signal processing) , permeability (electromagnetism) , materials science , mathematics , computer science , chemistry , statistics , membrane , computer vision , biochemistry
Effective bed voidage is a reliable characteristic of filter‐aids, both kieselguhrs and perlites. When combined with the evidence of electronmicrographs, it gives excellent correlation between filtration theory and practice. Effective bed voidage is a more reliable characteristic than permeability when comparing different filter materials. A typical effective bed voidage for a bodyfeed grade filter‐aid is 37%. This is considerably less than the total voidage, which is a most inappropriate measurement for the assessment of filter‐aids, despite it being generally quoted.