Kinetics of CO2 solubility using EDA

https://doi.org/10.3390/en14206822

“Table 1 summarizes the kinetic and thermodynamic data obtained from the CO₂ solubility tests. The CO₂ capture rate (dn/dt) was increased at a higher initial pressure. For the most suitable case (Po=3500 KPa), the t25, t50, and t90 values corresponded to 2.20 min, 23.31 min, and 145.30 min, respectively. For the other initial pressures, 90% of the CO₂ was captured in ~180 min. The CO₂ loading in each experiment was consistent with the reference data of CO₂’s solubility in water [39]. Therefore, the CO₂ solubility tests showed that (a) the experimental setup was suitable for carrying out CO₂ capture studies where equilibrium conditions are reached in <4 h, and (b) at a higher initial pressure, a greater driving force was obtained for the CO₂ capture process, maximizing the CO₂ loading at the equilibrium conditions. For these reasons, the CO₂ capture tests using the EDA were carried out at the highest initial pressure.”