The present invention is {HEAD ~ a method} for removing 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 {TAIL ~ an N hydroxyalkyl 2 piperazinone} or an alkyl or aryl substituted derivative thereof 
The present invention is { HEAD ~ a method } for removing 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 { TAIL ~ an N hydroxyalkyl 2 piperazinone } or an alkyl or aryl substituted derivative thereof
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