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Microfiltration

Identification

Key words microfiltration, filter media, mechanical separation method, solid-liquid, suspension, depth filters, screen filters, membrane
Latest version 2010/12/20
Completed by Wageningen UR - FBR

How does it work?

Primary objective Solid–liquid separation, solid-gas separation
Working principle Microfiltration is the process of filtration with a micron sized filter (Range 0.1 – 10 µm). The filters can be in a submerged configuration or a pressure vessel configuration (0.1 – 10 bar). They can be hollow fibers, flat sheet, tubular, spiral wound and hollow fine fiber. Filter materials are ceramic, textile, metal and polymer.
Images
Additional effects Effect:
  • pasteurisation
  • sterilisation (depending on pore size)
  • separation of other particles (undesired)
Important process parameters pressure, pore size, filter area
Important product parameters viscosity

What can it be used for?

Products Beverages, water treatment, suspension
Operations Removal of selected particles from (large) streams (liquid or gas).
Solutions for short comings Potential needs:
  • Mild pasteuristaion technique
  • Separation of undesired particles

What can it NOT be used for?

Products Dry powder, solids
Operations Not to be used for nanofiltration, utrafiltration (smaller particle sizes), sterilistaion (depending on pore size)
Other limitations Other limitations:
  • Fouling
  • Poor selectivity Cleanability of the filter material
Risks or hazards Aggressive chemicals can change the filter properties during process (e.g pore size, loading, ...)

Implementation

Maturity Available in lab-, pilot- and industrial scale.
Modularity /Implementation Modularity:
  • Modular.
  • Microfiltration can be used as a pre-filtration step.
Consumer aspects Not known
Legal aspects Not known
Environmental aspects Use of water and cleaning detergents is very high.



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Created by Hamoen on 17 January 2012, at 11:05