in a recent paper vaidya and kenig(4) studied the kinetics of the co2 reaction with DEEA in aqueous solutions they found that the second order reaction rate constant attained a value of 173 m3/(kmol s) at 303 k. besides, they studied the acceleration of the co2 reaction with DEEA by piperazine (pz) also enhanced co2 absoption rates in aqueous DEEA solution due to the high co2 loading capacity of DEEAnand high reactivity of PZ the blend comprising DEEA pz and H2O is attractive for the enhancement of co2 capture for the first time in the present work the equilibrium and kineic characteristics of the
co2-pz-DEEA system in aqueous solutions are considered besides the reaction rate constant for the reaction between co2 and pz is determined form the absorption rate measurements of co2 in the activated DEEA solutions