Experimental data for adsorption of pure carbon dioxide, methane, and nitrogen on zeolite 13X granules at different temperatures (288.15–318.15 K) and pressure up to 20 bar are reported. The cation of adsorbent is exchanged with H+, Li+, and Cu2+, and the adsorption of pure gases is measured. The equilibrium adsorption isotherms of gases are performed with a static volumetric adsorption instrument, which was designed and built. The results show that the adsorption capacity of carbon dioxide is higher than that of methane and nitrogen and that the cation exchange improved the adsorption capacity of pure gases. The LiX adsorbent has the highest adsorption capacity among the studied adsorbents. However, the relative selectivity of carbon dioxide over methane for zeolite 13X has the highest value of 30.48. The CuX adsorbent shows the highest selectivity for carbon dioxide over nitrogen. The adsorption isotherms for all of the pure gases are fitted successfully with the Toth model.

New experimental data for adsorption of ethylene and ethane on zeolite 13X and zeolite 5A are reported at a temperature range of 288−308 K and pressure up to 20 bar. The cation exchange for zeolites 13X and 5A was performed using copper, and the observed adsorption capacities of the copper-exchanged zeolites were measured. The equilibrium adsorption capacities of these adsorbents toward ethylene and ethane were compared. The copper-exchanged zeolites showed improved adsorption capacities toward both gases, where CuA was found to have the highest adsorption capacity. However, the copper-exchanged zeolites 13X and 5A underperformed in comparison to the expected high selectivity for ethylene/ethane separation. The data utilized for expressing the adsorption isotherm were successfully correlated with the Toth model, and the parameters for this model were calculated as reported in this paper.

In this study, the adsorption of thiophene compounds (TCs, comprised of thiophene (T), benzothiophene (BT), and dibenzothiophene (DBT)) from model fuel was performed with modified Active Carbon(AC). The single solute model fuel was prepared at 2000ppm, and the mixture concentration of components was performed for 3000ppm. Furthermore, thiophene adsorption from commercial fuel (kerosene) was studied. Based on the experimental results, the correlated parameters of adsorption isotherms, kinetic models, and Fisher factor were calculated. The pseudo-second-order model has the best fitting to experimental data, and the 10% Cu+ supported on acid-washed Activated Carbon (A1CN10) has the best-adsorbed amount of TCs (T, BT, and DBT), being 78, 96, 100%, respectively. The physicochemical characterizations for adsorbents were verified by the N2 adsorption-desorption surface area analyzer (BET), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Energy Dispersive Spectroscopy (EDS). In addition, the adsorbent-regeneration process was performed by two agitating methods and ultrasound impact was studied.