Nanofiltration

Nanofiltration is a form of filtration that uses membranes to separate different fluids or ions. NF is typically referred to as “loose” RO due to its larger membrane pore structure as compared to RO membranes, which allows passage of monovalent salts through the membrane but prevents more complex structure molecules having higher molecular weight. It can operate at much lower pressures (10-12 bar) than RO, NF is used in applications like concentrating API’s, antibiotics, peptides and other constituents that have a molecular weight greater than 1000 daltons, where removal of small volumes of organic solvents eg ethyl acetate, THF, methanol etc. is required NF is available in Organic and Ceramic Material of construction.

Applications

  • Concentration of milk
  • Desalting applications (removal of monovalent ions)
  • Solvent removal