Cyanide Scrubbing

Hydrogen cyanide (HCN) is usually scrubbed with an aqueous solution of NaOH. The methods used are similar to those described for HCl scrubbing. Recovery as a usable by-product is not practical. Also, in some cases, the addition of NaOCl to the scrubbing solution is used to increase removal performance or to produce more desirable reaction products.

 

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