Current progress status of separation technology by using nanofiltration membranes

The current progress status of separation technology by using nanofiltration membranes is reviewed. The separation mechanisms of nanofiltartion membranes, the evaluation methods of the separation performance of nanofiltration membranes as well as the two application examples for the separation of the solutions of (1) saccharides and salt, and (2) two amino acids with different isoelectric points. The current status, problems and future challenge of water treatment by using nanofiltration membrane are expatiated.