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'''Carbon dioxide scrubber''' is a device that absorbs [[carbon dioxide]] (CO2) from the air. It is used in various applications, including [[submarine]]s, [[spacecraft]], and [[diving equipment]], where it is essential to remove CO2 from the breathing environment to prevent [[carbon dioxide poisoning]].

== Function ==
A carbon dioxide scrubber works by passing air through a scrubbing solution or material that absorbs CO2. The most common scrubbing solutions are [[alkaline]] substances such as [[sodium hydroxide]] (NaOH) or [[potassium hydroxide]] (KOH). These substances react with the CO2 in the air to form a harmless salt and water.

== Types ==
There are several types of carbon dioxide scrubbers, including [[chemical scrubber]]s, [[biological scrubber]]s, and [[physical scrubber]]s.

=== Chemical Scrubbers ===
Chemical scrubbers use a chemical reaction to remove CO2 from the air. The most common type of chemical scrubber is the [[amine scrubber]], which uses a solution of amines to absorb CO2.

=== Biological Scrubbers ===
Biological scrubbers use [[microorganisms]] to absorb CO2. These scrubbers are often used in [[wastewater treatment]] plants and other industrial applications.

=== Physical Scrubbers ===
Physical scrubbers use a physical process, such as [[adsorption]], to remove CO2 from the air. These scrubbers are often used in industrial applications where large volumes of air need to be treated.

== Applications ==
Carbon dioxide scrubbers are used in a variety of applications, including:

* [[Submarine]]s: Submarines use carbon dioxide scrubbers to remove CO2 from the air and prevent carbon dioxide poisoning.
* [[Spacecraft]]: Spacecraft use carbon dioxide scrubbers to maintain a breathable atmosphere for astronauts.
* [[Diving equipment]]: Diving rebreathers use carbon dioxide scrubbers to remove CO2 from the breathing gas.
* [[Wastewater treatment]]: Some wastewater treatment plants use biological carbon dioxide scrubbers to remove CO2 from the air.
* [[Industrial applications]]: Many industrial processes produce large amounts of CO2, which can be removed using physical or chemical carbon dioxide scrubbers.

== See also ==
* [[Carbon capture and storage]]
* [[Carbon sequestration]]
* [[Air scrubber]]
* [[Soda lime]]

[[Category:Environmental engineering]]
[[Category:Chemical engineering]]
[[Category:Industrial gases]]
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Carbon dioxide scrubber - Revision history

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