Examples
Examples of filtration include
- The coffee filter to keep the coffee separate from the grounds.
- HEPA filters in air conditioning to remove particles from air.
- Belt filters to extract precious metals in mining.
- Horizontal plate filter, also known as Sparkler filter.
- Furnaces use filtration to prevent the furnace elements from fouling with particulates.
- Pneumatic conveying systems often employ filtration to stop or slow the flow of material that is transported, through the use of a baghouse.
- In the laboratory, a Büchner funnel is often used, with a filter paper serving as the porous barrier.
An experiment to prove the existence of microscopic organisms involves the comparison of water passed through unglazed porcelain and unfiltered water. When left in sealed containers the filtered water takes longer to go foul, demonstrating that very small items (such as bacteria) can be removed from fluids by filtration.
In the kidney, renal filtration is the filtration of blood in the glomerulus, followed by selective reabsorbtion of many substances essential for the body to maintain homeostasis.
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