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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 ...
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 ...
Industrial water filters are mainly equipped with ultrafiltration hollow fiber membranes. Domestic water filtration systems have microfiltration hollow fiber membranes. In microfiltration a membrane pore diameter of 0.1 micrometers cuts-off microorganisms like germs and bacteria, Giardia cysts and other intestinal parasites, as well removing ...
Membranes have to provide enough mass transfer area to process large amounts of feed stream. The selected membrane has to have high selectivity properties for certain particles; it has to resist fouling and to have high mechanical stability. It also needs to be reproducible and to have low manufacturing costs.
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.
Decentralized wastewater system; Diffuser (sewage) Dissolved air flotation; Dissolved gas flotation; Desalination; Distillation; Effluent Decontamination System; Electro-oxidation; Electrocoagulation; Electrodeionization; Electrodialysis; Electrolysis; Enhanced biological phosphorus removal; Expanded granular sludge bed digestion; Extended ...
Schematic of semipermeable membrane during hemodialysis, where blood is red, dialysing fluid is blue, and the membrane is yellow. Kidney dialysis (from Greek διάλυσις, dialysis, 'dissolution'; from διά, dia, 'through', and λύσις, lysis, 'loosening or splitting') is the process of removing excess water, solutes, and toxins from the blood in people whose kidneys can no longer ...
Ultrafiltration membranes use polymer membranes with chemically formed microscopic pores that can be used to filter out dissolved substances avoiding the use of coagulants. The type of membrane media determines how much pressure is needed to drive the water through and what sizes of micro-organisms can be filtered out. [citation needed]
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