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Medical-grade soda lime includes an indicating dye that changes color when it reaches its carbon dioxide absorption capacity. To ensure proper functioning, a carbon dioxide scrubber (or soda lime canister) should not be used if the indicating dye is activated. Standard anesthesia machines typically contain up to 2 kilograms (4.4 lb) of soda ...
A carbon dioxide scrubber. A carbon dioxide scrubber is a piece of equipment that absorbs carbon dioxide (CO 2).It is used to treat exhaust gases from industrial plants or from exhaled air in life support systems such as rebreathers or in spacecraft, submersible craft or airtight chambers.
Baralyme is a mixture of 80% calcium hydroxide and 20% barium hydroxide compounds [1] [2] [3] that is used as an alternative to soda lime to absorb the exhaled carbon dioxide in a closed circuit anesthetic system.
Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes such as waste incineration, petroleum refineries, cement and lime kilns.
Recirculating (rebreather) systems, use soda lime to absorb carbon dioxide, in the scrubber, so that expired gas becomes suitable to re-use. With a very efficient recirculation system, the fresh gas flow may be reduced to the patient's minimum oxygen requirements (e.g. 250ml/min), plus a little volatile as needed to maintain the concentration ...
A typical absorbent is soda lime, which is made up of calcium hydroxide Ca(OH) 2, and sodium hydroxide NaOH. The main component of soda lime is calcium hydroxide, which is relatively cheap and easily available. Other components may be present in the absorbent. Sodium hydroxide is added to accelerate the reaction with carbon dioxide.
Dry sorbent injection involves the addition of an alkaline material (usually hydrated lime, soda ash, or sodium bicarbonate) into the gas stream to react with the acid gases. The sorbent can be injected directly into several different locations: the combustion process, the flue gas duct (ahead of the particulate control device), or an open ...
Here is a fun science fair project to do to test out Soda Lime: Test different air samples for Carbon Dioxide and compare where the air is most "polluted." Use Soda Lime (Sodium Calcium Hydroxide) to test the amount of CO2 present in the air sample. (It will absorb the CO2--weigh the difference in weight before & after).