Optimization study of carbon dioxide adsorption using base-activated zeolite in a column with time variations

Several types of research on zeolite have been about the adsorption process by various types of adsorbents, the amount of adsorbent, temperature, pressure, flow rate, absorption time, and the shape of the column used. In this study, CO2 gas was trapped using NaOH solution with a concentration of 0.2 M, after passing through a column filled with natural zeolite from Blitar, or with basic activated ones. The adsorption column with 25 grams of adsorbent capacity was equipped with two flowmeters on both ends. The adsorption process was carried out for one to eight minutes with a gas flow rate of 1 L/min. The amount of adsorbed CO2 was determined by titrating the trapping NaOH solution. The best CO2 absorption in this study occurred in the fifth minute of the adsorption process by the 1.0 M basic activated zeolite sample, which was 0.2454 mmol/g. Thus, the column filled with active zeolite had a better adsorption ability than that filled with natural zeolite.