Adsorbents
Adsorbents
Adsorbents (pronunciation: ad-sorb-ents) are substances that have the ability to adsorb other substances onto their surface. The term is derived from the Latin word adsorbere, meaning "to suck in".
Definition
Adsorbents are materials that hold molecules of another substance on their surface by adsorption. This process creates a film of the adsorbate (the molecules or atoms being accumulated) on the adsorbent's surface. Adsorbents are used in a variety of applications, including chemistry, pharmacy, and environmental science.
Types of Adsorbents
There are several types of adsorbents, each with unique properties that make them suitable for specific applications. These include:
- Activated carbon: This is a highly porous form of carbon with a high surface area, making it an excellent adsorbent. It is commonly used in water and air purification.
- Silica gel: This is a form of silicon dioxide, which is a highly porous and can adsorb a significant amount of water, making it useful as a desiccant.
- Zeolites: These are microporous, aluminosilicate minerals commonly used as commercial adsorbents and catalysts.
Applications
Adsorbents are used in a wide range of applications, including:
- Water purification: Adsorbents like activated carbon are used to remove impurities from water.
- Air purification: Adsorbents can remove pollutants from air, making it cleaner and safer to breathe.
- Pharmaceuticals: In the pharmaceutical industry, adsorbents are used in drug delivery systems and in the removal of toxins from the body.
See Also
External links
- Medical encyclopedia article on Adsorbents
- Wikipedia's article - Adsorbents
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