Filtration II – Using a Plate-and-Frame Filter

  • Marie-Laure Lameloise
Part of the Integrating Safety and Environmental Knowledge Into Food Studies towards European Sustainable Development book series (ISEKI-Food, volume 5)

Objectives and Learning Outcomes

  1. 1.

    Understand the operation of a plate-and-frame-filter press.

  2. 2.

    Verify cake filtration laws at constant flow rate, at constant pressure.

  3. 3.

    Learn how to size a filter through measurement of cake specific resistance on a laboratory filtration cells.



Cake filtration is adapted to filtration of solid–liquid suspension containing more than 0.1% particles (w/w). The particles accumulating on the surface of a cloth or sheet, form a porous layer or "cake" which becomes the main filtering medium (this is assumed to be a non-compressible cake).

When a fluid passes through a porous medium, the relationship between pressure drop, ΔP (Pa), and flow rate, dV/ dt (m 3s –1), can be described by Darcy–Carman's law:
$$\Delta P = \frac{1}{S}\left( \frac{{\rm d}V}{{\rm d}t}\right) \cdot \eta \cdot R $$


Pressure Drop Constant Flow Rate Feed Tank Outlet Valve Total Pressure Drop 
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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Marie-Laure Lameloise
    • 1
  1. 1.Departement de Genie Industriel AlimentaireEcole Nationale Superieure des Industries Agricoles et AlimentairesCedex – France

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