Abstract
At present, global warming becomes a major problem affecting the world in many ways. The main cause is the releasing of large amounts of carbon dioxide (CO2) into the atmosphere. The reduction of CO2 is thus a tremendous challenge. The CO2 capture processes then are invented to account this problem. One of the essential basic information for designing and operating of these separation processes is the adsorption–desorption equilibrium. In this study, the equilibrium isotherms on potassium carbonate on gamma-alumina (K2CO3∕γ-Al2O3) solid sorbent were correlated with Langmuir, Freundlich, Sips and Toth models. The CO2 sorption capacities were measured with pressures at different system temperatures (45–90 °C). From the result, it was found that Sips isotherm was the suitable model (R2 ranged between 0.91–0.99 with an error of less than 2.09%). When comparing the CO2 capture capacity with pure K2CO3, the obtained CO2 capture capacities were improved by impregnating K2CO3on the γ-Al2O3 support.
Publication details
- Authors: Inmanee, N., Chaiwang, P., Chalermsinsuwan, B., Piumsomboon, P.
- Published in: (2020) Energy Reports, 6, pp. 231-236.
- Year: 2020
- DOI: 10.1016/j.egyr.2020.08.046