Review of CO2 capture using absorption and adsorption technologies

Abstract

In this work, we tried to explore the review of CO2 capture using absorption and adsorption technologies. For this purpose, also, besides to literature reviewing investigate the effect of some operational parameters such as temperature, pressure, amine concentration, solution flow rate, and the adsorbent loading on the CO2 removal efficiency and CO2 capture capacity. The results demonstrated that the flow rate of liquid and concentration of amine has a positive effect on the removal efficiency and the CO2 flow rate has a negative effect. The results in the adsorption part indicated the pressure had a positive effect on the equilibrium adsorption capacity and the adsorbent loading and temperature had a negative effect. Moreover, the absorption of CO2 into three ZrO2, TiO2, and ZnO nanofluid at Pz and DEA solution was investigated. The results represented that the loading of nanoparticles and speed of stirrer have an optimum value for CO2 removal efficiency. The optimum value was 0.05 wt%, 0.05 wt%, and 0.1 wt%, for ZrO2, TiO2, and ZnO nanoparticles, respectively. Furthermore, the CO2 removal efficiency increased first with an increase of the stirring speed up to 200 rpm, and then begins to decrease as the stirrer speed increases above 200 rpm.