Pros And Cons Of Ultrafiltration Membranes

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Industrial Uses of Membrane Ultrafiltration in Removal of Environmental Contaminants
Introduction and summary
Filtration is a technique which separates more than two substances from a fluid stream. The selective membrane plays a role of a selective barrier. It permits the passage of particular constituents of the mixture while trapping other mixture components. Commonly used membrane processes encompass reverse osmosis (hyperfiltration), ultrafiltration and microfiltration. The ultrafiltration membrane separates suspended solids from water sources without coagulation. An ultrafiltration retains particles whose molecular weights range from 1000 to 1,000,000. An ultrafiltration functions by driving the mixture solution under pressure over the appropriately supported membrane. The gradient of the pressure pushes the small species and the solvent through the membrane pores while trapping large mixture component. Backflushing or addition of chlorinated water is used to clean the membrane. They restore the pores of the membrane and allow the usage of the membrane for unlimited periods. There various pros and cons of different types of membrane ultrafiltration and their usage vary from one type to another. This paper discusses technical appreciation of the membrane ultrafiltration in the removal of environmental contaminants. It also highlights the present applications, practice and future opportunities of ultrafiltration membrane in the removal of environmental contaminants.

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