The present invention is a method for removing {TAIL ~ SO2} from a gas stream containing it, and which may also contain other gases commonly associated with hydrocarbon streams or combustion gases, by employing as an absorbent therefor an aqueous solution of an N hydroxyalkyl 2 piperazinone or an alkyl or aryl substituted {HEAD ~ derivative} thereof 
The present invention is a method for removing { TAIL ~ SO2 } from a gas stream containing it , and which may also contain other gases commonly associated with hydrocarbon streams or combustion gases , by employing as an absorbent therefor an aqueous solution of an N hydroxyalkyl 2 piperazinone or an alkyl or aryl substituted { HEAD ~ derivative } thereof
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