enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Ultrafiltration - Wikipedia

    en.wikipedia.org/wiki/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 ...

  3. Ultrafiltration (kidney) - Wikipedia

    en.wikipedia.org/wiki/Ultrafiltration_(kidney)

    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 ...

  4. Molecular weight cut-off - Wikipedia

    en.wikipedia.org/wiki/Molecular_weight_cut-off

    In ultrafiltration, the molecular weight cut-off or MWCO of a membrane refers to the lowest molecular weight of the solute (in daltons) for which 90% of the solute is retained by (prevented from passing through) the membrane, [1] or the molecular weight of the molecule (e.g. globular protein) that is 90% retained by the membrane.

  5. Membrane technology - Wikipedia

    en.wikipedia.org/wiki/Membrane_technology

    Membranes that function according to this principle are used mainly in micro- and ultrafiltration. They are used to separate macromolecules from solutions , colloids from a dispersion or remove bacteria.

  6. Membrane - Wikipedia

    en.wikipedia.org/wiki/Membrane

    Ultrafiltration removes particles higher than 0.005-2 μm and operates within a range of 70-700kPa. [4] Ultrafiltration is used for many of the same applications as microfiltration. Some ultrafiltration membranes have also been used to remove dissolved compounds with high molecular weight, such as proteins and carbohydrates.

  7. Gibbs–Donnan effect - Wikipedia

    en.wikipedia.org/wiki/Gibbs–Donnan_effect

    In many instances, from ultrafiltration of proteins to ion exchange chromatography, the pH of the buffer adjacent to the charged groups of the membrane is different from the pH of the rest of the buffer solution. [6] When the charged groups are negative (basic), then they will attract protons so that the pH will be lower than the surrounding ...

  8. Protein purification - Wikipedia

    en.wikipedia.org/wiki/Protein_purification

    Ultrafiltration concentrates a protein solution using selective permeable membranes. The function of the membrane is to let the water and small molecules pass through while retaining the protein. The solution is forced against the membrane by mechanical pump, gas pressure, or centrifugation.

  9. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    Point-of-use filters for home use include granular-activated carbon filters used for carbon filtering, depth filter, metallic alloy filters, microporous ceramic filters, carbon block resin, microfiltration and ultrafiltration membranes. Some filters use more than one filtration method. An example of this is a multi-barrier system.