Miller, Shelby A. Argonne National Laboratory, Argonne, Illinois.
Last reviewed:June 2019
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- Gas filtration
- Liquid filtration
- Cake filters
- Clarifying filters
- Links to Primary Literature
- Additional Readings
The separation of solid particles from a fluid-solids suspension using a porous material to separate the suspended particulate matter from fluid. The filter material (medium) and the equipment assembly that holds it and provides space for the accumulated solids is called a filter. The fluid may be a gas or a liquid. The solid particles may be coarse or very fine, and their concentration in the suspension may be extremely low (a few parts per million) or quite high (>50%). Filtration may be done to purify the fluid by clarification or to recover clean, fluid-free particles, or both. In most filtrations, the solids-fluid separation is not perfect. In general, the closer the filtration comes to perfection, the more costly it is.
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