- Carbon dioxide scrubber
A carbon dioxide scrubber is a device which absorbs
carbon dioxide . It is used to treatexhaust gas es fromindustrial plant s or from exhaled air inlife support system s such asrebreather s or inspacecraft ,submersible craft or airtight chambers.Carbon Dioxide scrubbers are also used in Controlled Atmosphere (CA) storage.
trong bases
Various strong bases such as
soda lime ,sodium hydroxide ,potassium hydroxide , andlithium hydroxide are able to remove carbon dioxide by reacting with it. In particular,lithium hydroxide is used aboard space craft to remove carbon dioxide from the atmosphere. It reacts with carbon dioxide to give lithiumbicarbonate ::2 LiOH(s) + 2 H2O(g) → 2 LiOH.H2O(s):2 LiOH.H2O(s) + CO2(g) → Li2CO3(s) + 3 H2O(g)
The net reaction being:
:2 LiOH(s) + CO2(g) → Li2CO3(s) + H2O(g)
Monoethanolamine
Monoethanolamine solutions absorb carbon dioxide when cold, and release it when warmed.Activated Carbon
Activated Carbon can be used as a Carbon Dioxide scrubber. Air with high Carbon Dioxide content (such as air from fruit stores) can be blown through beds of activated carbon and the Carbon Dioxide will absorb to the activated carbon. Once the bed is saturated it must then be "regenerated" by blowing low Carbon Dioxide air (ambient air) through the bed. This will release the Carbon Dioxide from the bed, and it can then be used to scrub again.ee also
*breathing
*Greenhouse gas
Wikimedia Foundation. 2010.