A method of removing SO2 from a gas stream containing the same by absorbing the SO2 in {HEAD ~ an aqueous solution} containing a 4 2 piperazinone compound or an alkyl or aryl substituted {TAIL ~ derivative} thereof 
A method of removing SO2 from a gas stream containing the same by absorbing the SO2 in { HEAD ~ an aqueous solution } containing a 4 2 piperazinone compound or an alkyl or aryl substituted { TAIL ~ derivative } thereof
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