Examples of Absorption

Skin absorption

• Skin absorption is the process of taking in substances through the surface of skin either just into the skin or into circulation.
• Skin absorption provides a route for the entry of chemicals into the body either as toxins or as medication.
• The process of absorption in skin affected by a number of factors like the concentration of the substance, duration, and area of contact, the solubility of the chemicals, and the physical condition of the skin.
• The absorption process in the skin is a passive process that doesn’t require the expenditure of energy.
• The most crucial application of skin absorption is the dermal application of medicine which allows a localized action, unlike ingestion and injection.
• However, the nature of skin to absorb things might also lead to skin diseases like dermatitis. Prolonged exposure to chemicals results in the absorption of larger volumes of chemicals that are harmful to the skin and the body.

Intestinal absorption

• Absorption of nutrients and water into circulation is one of the important functions of the digestive system.
• Absorption in the digestive system is an active process that takes place by the expenditure of energy.
• The epithelium surface of the small and large intestine absorbs nutrients and water which are later passed into circulation.
• Intestine, unlike skin, does a selective absorption of substances, ensuring the entry of only necessary and essential materials.

Absorption refrigerators

• Absorption refrigerators are a special type of refrigeration system that utilizes the concept of absorption for the cooling of substances.
• These refrigerators first evaporate the refrigerant liquid, which is then absorbed by another liquid to create a low partial pressure.
• Finally, the refrigerant liquid is heated to evaporate the heat out of the refrigerator.
• Absorption refrigerators are commonly used in recreational vehicles (RVs) and caravans as they can operate on propane fuel rather than electricity.