The role of porosity in filtration: VI. New definition of filtration resistance

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<jats:title>Abstract</jats:title><jats:p>The definition of filtration resistance is re‐examined in view of the new theory (<jats:italic>12</jats:italic>) of the variation of flow rate with respect to distance through a filter cake. In the new definition it is shown that the filtration resistance depends upon slurry concentration as well as applied pressure. A correction factor modifying the specific filtration resistance previously defined by Ruth (<jats:italic>5</jats:italic>, <jats:italic>6</jats:italic>) is developed.</jats:p><jats:p>Where the hydraulic pressure variation within a cake is known, methods are presented for calculating the variation of flow rate with respect to distance and the change of filtration resistance in relation to slurry concentration.</jats:p>

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