caa a22 4500 605489335 CHVBK 20210128100459.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1134/S1061933X15060113 doi (NATIONALLICENCE)springer-10.1134/S1061933X15060113 Equilibrium studies on the removal of cadmium ion on amberlite IR-120 sorbent [Elektronische Daten] [M. Khalil, Y. El-Aryan, E. Abdel-Galil] Adsorption kinetics and isotherms for Cd(II) ions on Amberlite IR-120 in a batch process have been studied under different conditions. The influence of various experimental parameters such as the pH, amount of adsorbent material, initial Cd(II) concentration, contact time and solution temperature, on the removal of cadmium ions has been investigated. The experimental isotherms were analyzed using the Langmuir and Freundlich models. The results suggest that the adsorption of Cd(II) ions on Amberlite IR-120 follows the Langmuir model. The adsorption capacities amounted for 250.63, 258.39 and 259.74 mg/g adsorbent at 28, 50 and 70°C, respectively. Two kinetic models were applied to fit the experimental kinetic data. The best fit was obtained with pseudo-second order model. The thermodynamic parameters were also determined. The activation energy calculated from the rate coefficients at different temperatures was 37.45 kJ/mol. The value of the heat of adsorption suggests the endothermic nature of the cation exchange process. Pleiades Publishing, Ltd., 2015 Khalil M. Hot Laboratory Center, Atomic Energy Authority, P. No. 13759, Cairo, Egypt aut El-Aryan Y. Hot Laboratory Center, Atomic Energy Authority, P. No. 13759, Cairo, Egypt aut Abdel-Galil E. Hot Laboratory Center, Atomic Energy Authority, P. No. 13759, Cairo, Egypt aut Colloid Journal Pleiades Publishing 77/6(2015-11-01), 745-753 1061-933X 77:6<745 2015 77 10595 https://doi.org/10.1134/S1061933X15060113 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061933X15060113 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Khalil M. Hot Laboratory Center, Atomic Energy Authority, P. No. 13759, Cairo, Egypt aut NATIONALLICENCE 700 1- El-Aryan Y. Hot Laboratory Center, Atomic Energy Authority, P. No. 13759, Cairo, Egypt aut NATIONALLICENCE 700 1- Abdel-Galil E. Hot Laboratory Center, Atomic Energy Authority, P. No. 13759, Cairo, Egypt aut NATIONALLICENCE 773 0- Colloid Journal Pleiades Publishing 77/6(2015-11-01), 745-753 1061-933X 77:6<745 2015 77 10595