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Filtration is the separation of particles from liquids or gases by means of a porous material, such as a filter or membrane. The porous substance permits liquid or gas to flow through while capturing solid particles or contaminants.

Types of Filtration

  • There are several forms of filtering, each of which is utilized for distinct purposes. Among the most prevalent forms of filtration are:
  • Gravity filtration: is a straightforward type of filtration in which a mixture is poured through a filter and the filtered liquid is collected in a container below.
  • Vacuum filtration: is a more effective type of filtering in which a vacuum is introduced to the mixture, drawing the liquid through the filter while leaving the solid particles behind.
  • Pressure filtration: Pressure filtration is a filtering procedure that applies pressure to the combination, driving the liquid through the filter while leaving the solid particles behind.
  • Centrifugal filtration: Centrifugal filtration is a filtering process in which a centrifuge is used to spin a mixture at a high speed, therefore separating solid particles from liquid.
  • Membrane filtration: is a filtering technology that uses a membrane to remove solid particles or contaminants from a liquid or gas. This technique is frequently employed in the food and beverage sector to eliminate germs and other microbes from beverages.


  • There are several applications for filtration, including:
  • In water treatment plants, filtration is used to remove contaminants such as sand, silt, and bacteria from drinking water.
  • Filtration is employed by air purifiers to remove particles and impurities from the air.
  • In the chemical processing industry, filtration is used to remove solid particles or contaminants from liquids or gases.
  • In the food and beverage business, liquids such as milk and juice are filtered to eliminate germs and bacteria.
  • In the pharmaceutical sector, filtration is employed to remove contaminants and particles from medications and other medicinal items.


  • Filtration filters and membranes can be constructed from a number of materials, including:
  • Paper Coffee makers and other home appliances often utilize paper filters.
  • Industrial applications, such as oil and gas processing, employ cloth filters.
  • Filters made of synthetic fibers are utilized in air purifiers and other applications requiring great efficiency.
  • Ceramic filters are utilized in water treatment facilities and other industrial settings.
  • Metal Metal filters are utilized in chemical processing and other high-temperature and high-pressure applications.

Also see

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