This study investigated the prospect of using aqueous mixture of 1-butylpyridinium tetrafluoroborate ([Bpy][BF4]) ionic liquid (IL) and monoethanolamine (MEA) as solvent in post-combustion CO2 capture (PCC) process.This is done by analysis of the process through modelling and simulation.In literature,reported PCC models with a mixture of IL and MEA solvent were developed using equilibrium-based mass transfer approach.In contrast,the model in this study is developed using rate-based mass transfer approach in Aspen Plus(R).From the results,the mixed aqueous solvent with 5-30 wt％ IL and 30 wt％ MEA showed 7％-9％ and 12％-27％ less specific regeneration energy and solvent circulation rate respectively compared to commonly used 30 wt％ MEA solvent.It is concluded that the IL concentration (wt％) in the solvent blend have significant impact on specific regeneration energy and solvent circulation rate.This study is a starting point for further research on technical and economic analysis of PCC process with aqueous blend of IL and MEA as solvent.