ultrafiltration - ορισμός. Τι είναι το ultrafiltration
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Τι (ποιος) είναι ultrafiltration - ορισμός

FILTRATION BY FORCE THROUGH A SEMIPERMEABLE MEMBRANE
Ultrafiltered; Ultarafiltered; Ultrafiltration (industrial); Ultrafiltrate; Ultra Filtration
  • Schematic of cross flow operation.
  • Schematic of dead-end operation
  • Hollow fibre module
  • Typical two stage membrane process with recycle stream
  • Spiral-wound membrane module
  • Self-supporting hollow fibre module

ultrafiltration         
¦ noun filtration using a medium fine enough to retain colloidal particles, viruses, or large molecules.
Ultrafiltration         
Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permeate (filtrate).
Ultrafiltration (kidney)         
  • Diagram showing the basic physiologic mechanisms of the kidney
FIRST STEP OF FILTRATION FROM BLOOD IN THE KIDNEYS IN RENAL CORPUSCLES
Glomerular filtrate; Renal ultrafiltration; Ultrafiltration (renal)
In renal physiology, ultrafiltration occurs at the barrier between the blood and the filtrate in the glomerular capsule (Bowman's capsule) in the kidneys. As in nonbiological examples of ultrafiltration, pressure (in this case blood pressure) and concentration gradients lead to a separation through a semipermeable membrane (provided by the podocytes).

Βικιπαίδεια

Ultrafiltration

Ultrafiltration (UF) is a variety of membrane filtration in which forces such as pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permeate (filtrate). This separation process is used in industry and research for purifying and concentrating macromolecular (103–106 Da) solutions, especially protein solutions.

Ultrafiltration is not fundamentally different from microfiltration. Both of these are separate based on size exclusion or particle capture. It is fundamentally different from membrane gas separation, which separate based on different 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.