Ultrafiltration
Ultrafiltration (UF) is a type of membrane filtration in which hydrostatic pressure forces a liquid against a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained, while water and low molecular weight solutes pass through the membrane. 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, nanofiltration or gas separation, except in terms of the size of the molecules it retains.
Process[edit | edit source]
Ultrafiltration uses a membrane barrier to separate particles according to their size. The process involves the application of pressure to the solution on one side of the membrane. This pressure forces the water and small solutes through the membrane, leaving the larger solutes behind.
Applications[edit | edit source]
Ultrafiltration is used in a variety of applications, including:
- Water purification
- Wastewater treatment
- Food and beverage processing
- Pharmaceutical production
- Biotechnology
Advantages and Disadvantages[edit | edit source]
Like any filtration process, ultrafiltration has its advantages and disadvantages. The main advantage is the ability to separate large molecules from a solution. However, the process can be expensive and time-consuming, and it may not be suitable for all types of solutions.
See Also[edit | edit source]
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