Membrane Filters | Types & Their Uses

Membrane filters pressurize the water or any other kind of liquid across the semi-permeable membrane or porous. This process helps separate the particular matter from the soluble and fluid components.

What are Membrane Filters

Another name for membrane filters is microporous films. Membranes have their specific rating for the sizes of the pore. These pores also known as screens, or sieves, are microporous filters. These filters capture the microorganisms and particles on the surface that are larger than their pores. 

Particles that are smaller in size than the size of pores on the surface can be separated with different mechanisms.

How Many Types Of Membrane Filters

Here you will know different types of membrane filters. Filters depend upon the size of the material needed to separate them from the liquid. We will discuss different types of membranes, it will help you find out the kind of filter suits you the most.

Mixed Cellulose Esters

Mixed cellulose esters contain acetate and cellulose nitrate. These filters are highly pure and porous, and their wetting is so fast. These filters are helpful in different laboratories for contamination analysis, monitoring, microbiology, and sterilization of biological fluids.

Cellulose Acetate

There are cellulose diacetate and triacetate in the cellulose acetate filters. Their strength is high, and have a low static charge, and are useful in sterilization. You can make use of these filters in filtering the enzyme solutions, fastidious organisms, diagnostic cytology, and enhancing the recovery of gram-positive.

Hydrophilic PTFE

The Hydrophilic PTFE filter includes maximum pH and chemical antagonism. In wet conditions, they will be clear optically. And provide high flow rates. For organic mixture, aqueous solvents, and HPLC membrane filters are helpful.

Hydrophobic PTFE

Hydrophobic PTFE filters behave as retentive membranes and are thin and highly porous. Hydrophobic PTFT does not react with strong acids, Strong bases, and chemically aggressive solvents. For the sterilization of gases, venting gas and air, clarifying and sterilizing Strong acids that are not consistent with other membrane filters.

The Procedure For Using Membrane Filters

People use membrane filters for different purposes. The use of a membrane filter depends upon which type of procedure you want to use. We list some ways to use such filters: 

Cross-Flow Filtration

The food industry uses a cross-flow filtration procedure. Cross-flow filtration is applicable for murky liquids like juice, wine, and more. This process is also useful in dialysis.

Microfiltration

Microfiltration is useful in textile fabric, stainless steel, and plastic. Biotechnology applications use microfiltration for the separation of water-oil emulsions or separation of oxides or colloidal hydroxides.

Nanofiltration

Nanofiltration uses low pressure and membrane filters with a bigger-size pore. Its filter turns the impure water into drinking water. Nanofiltration eliminates the heavy metals from the water and makes it soft and worth drinking water.

Ultrafiltration

For the separation of proteins or for cold sterilization in the pharmaceutical company ultrafiltration is useful. The metallurgy field uses ultrafiltration to clean the wastewater and recover metal.

Reverse Osmosis

As it is a pressure-driven procedure, the pressure naturally reverses the osmosis process. Reverse osmosis uses a semi-permeable membrane to clean the water. It is used to clean drinking water, and aquarium water, and is useful in producing juice and treating wastewater.

Conclusion

These were all about the membrane filters and their types. You will learn about different types of membrane filters and in which place you can use them. The use of a filter depends upon the quality of the material. Simsii can help you detect which type of filter you need for your products. Before you select any filter, check out the filter procedure for the nature of your product.