Zeitschrift für Membranwissenschaft und -technologie

Ultrafiltration

Ultrafiltration is one of the membrane filtration variety in which forces like pressure or concentration gradients leads to the segregation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are left over in the so-called retentate, while water and low molecular weight solutes pass through the layer in the permeate. This segregation technique is used in industry and research for purifying and concentrating macromolecular (103 - 106 Da) solutions, especially protein solutions. Ultrafiltration is not fundamentally vary from microfiltration. Both of these separate based on size exclusion or particle capture. It is basically different from membrane gas separation, which separate depending on various amounts of absorption and different rates of diffusion. Ultrafiltration membranes are defined by the molecular weight cut-off (MWCO) of the membrane used. Ultrafiltration is applied in cross-flow or dead-end mode.
Related Journals of Ultrafiltration
Journal of Membrane Science & Technology, Filtration & Separation, Filtration, Karger Journal, kidney and Blood Pressure Research, Journal of Pharnaceutical Sciences, Journal of Chemical Society.