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Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

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C. Derivations

C1. A molecular sieve zeolite adsorbent consists of pellets that are agglomerates of zeolite crystals with density ρcrystal scattered in a continuous phase of clay binder with a density ρclay. In this case, there is an interpellet porosity εe (between pellets—this is normal εe) an intercrystal porosity εp1, (which is the porosity in the binder), and an intracrystal porosity εp2, (inside the crystals). If the fraction of the particle volume that is crystals (including porosity within the crystals) is fcry, derive formulas for the total porosity, Vavailable, and the particle and bulk densities.

C2. Derive the value for the limiting conditions in the Langmuir isotherm, Eq. (18-6a), when cA becomes very large (KA,c cA >> 1.0).

C3. ...

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