Chemical Reaction In Scrubbers

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MK133MOD2

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Ok, first what is the byproduct of the chemical reaction in the scrubber besides moisture and heat, is it chalk? And at what point does moisture cause it to go caustic if the moisture in the scrubber does not? Just want to clear this up.

TIA
 
Chalk (calcium carbonate) is the end product of the absorbing process.

The scrubbing process generates heat and water, both of which are needed to some extend to aid the process (even make it possible).

When there is enough water present to disolve the absorbant, the resulting solution is very caustic and harmful - the caustic cocktail.

An exact description of the CO2 removal in the scrubber bed can be found in Jeff Bozanic's "Mastering Rebreathers". Both in layman's terms as well as chemical equations. As well as everything else you always wanted to know about rebreathers.
 
The reaction is essentially the same as the acid/base reaction that produces water and CO2 gas, only in reverse. The acid is a weak acid but is converted rather quickly in the rebreater. The caustic cocktail is only a risk when there is way too much moisture in the system. PM me if you want the approximate chemical reaction in terms of the formula. An exact is not possible because the different manufacturers add different chemical and perhaps indicators that would affect the exact formula.

calcium carbonate an ionic compound when placed in any acid it yields CO2 H2O and the acid type product.

This is not always accurate. It is difficult to make a complex issue too simple. The oversimplification is where the errors are.
 

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