Microfiltration (commonly abbreviated to MF) is a type of physical filtration process where a contaminated fluid is passed through a special pore-sized membrane to separate microorganisms and suspended particles from process liquid. MF membrane is commonly used in conjunction with various other separation processes such as ultrafiltration and reverse osmosis to provide a product stream which is free of undesired contaminants.
Microfiltration membranes(MF)can trap particles between 0.1 and 1 micron. MF allow macromolecules and soluble solids (inorganic salts) to pass through, but will trap suspended solids, bacteria, and high molecular weight colloids. The main industrial application of MF is to
1) remove bacteria and other particles in water;
2) remove bacteria in various solutions such as interstitial fluid, antibiotics, serum, and plasma proteins;
3) remove suspended solids, microorganisms and odor impurities in foods such as beverages, alcohol, soy sauce and vinegar.
MF usually serves as a pre-treatment for other ceramic membrane separation
processes such as ultrafiltration, and a post-treatment for granular media filtration. The typical particle size used for microfiltration ranges from about 0.1 to 10 µm.In terms of approximate molecular weight these membranes can separate macromolecules of molecular weights generally less than 100,000 g/mol.
Applications range of microfiltration (MF) membrane technology
Remove suspended solid and reduce SS
Remove proteins, polysaccharides, pigments and other impurities
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