Absorption of Carbon Dioxide Into Aqueous Blends of Glycerol and Monoethanolamine in A Microchannel Reactor

This paper provides the experimental results of mass transfer performance of the aqueous mixture of mea+glycerol, as an industrially eco-friendly hybrid solvent, instead of a typical commercial alkanolamine solvent for co2 capture in a microchannel# the co2 absorption was performed at constant temperature of 40 °c and atmospheric pressure# the importance of the operational variables, including the input solvent flow rate (4-11 ml/min), mea (10-30 %wt), and glycerol concentration (6-12 %wt) in the solvent were assessed on the mass transfer performance in terms of co2 removal efficiency (ef) and volumetric overall gas-phase mass transfer coefficient (kgav)# the values of kgav are ranging from 70#68 to 96#95 kmol/m3#h#kpa# it is confirmed that comparing aqueous solution of 20 %wt mea, adding dilute concentrations of glycerol to 20 %wt mea, can give rise to the enhancement of kgav and ef in the hybrid mixture of mea-gly#