Nanofiltration

Nanofiltration (NF) is a membrane filtration process that operates between ultrafiltration (UF) and reverse osmosis (RO) in terms of pore size and rejection capabilities. It utilizes semi-permeable membranes with pore sizes typically in the range of 1 to 10 nanometers (nm), effectively allowing certain molecules and ions to pass through while rejecting others based on size and charge.