naa a22 4500 510821375 CHVBK 20180411083534.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11814-012-0126-9 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0126-9 Adsorption ability of oxidized multiwalled carbon nanotubes towards aqueous Ce(III) and Sm(III) [Elektronische Daten] [Fattaneh Behdani, Alireza Rafsanjani, Meisam Torab-Mostaedi, Seyed Mohammadpour] The aim of the present work was to investigate the adsorption of Ce(III) and Sm(III) onto multiwalled carbon nanotubes (MWCNTs) oxidized with concentrate nitric acid. The effects of solution pH, adsorbent dosage, and contact time were studied by batch technique. Langmuir, Freundlich and D-R isotherms were used to describe the adsorption behavior of Ce(III) and Sm(III) by oxidized MWCNTs, and the experimental results fitted Freundlich model well. The maximum uptake capacities (q m ) calculated by applying the Langmuir equation for samarium and cerium ions were found to be 89.28 and 92.59 (mg/g), respectively. A comparison of the kinetic models and the overall experimental data was best fitted by the pseudo second-order kinetic model. The calculated thermodynamic parameters (ΔGo, ΔHo, and ΔSo) showed that the adsorption for Ce(III) and Sm(III) is feasible, spontaneous and exothermic at 30-60 °C. Moreover, more than 70% of Ce(III) and Sm(III) adsorbed onto Oxidized MWCNTs could be desorbed with HNO3. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Multiwalled Carbon Nanotubes (MWCNTs) nationallicence Cerium nationallicence Samarium nationallicence Adsorption nationallicence Desorption nationallicence Isotherm nationallicence Kinetics nationallicence Behdani Fattaneh School of Chemical Engineering, University College of Engineering, University of Tehran, P. O. Box 11365-4563, Tehran, Iran aut Rafsanjani Alireza School of Chemical Engineering, University College of Engineering, University of Tehran, P. O. Box 11365-4563, Tehran, Iran aut Torab-Mostaedi Meisam Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P. O. Box 11365-8486, Tehran, Iran aut Mohammadpour Seyed School of Chemical Engineering, University College of Engineering, University of Tehran, P. O. Box 11365-4563, Tehran, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 448-455 0256-1115 30:2<448 2013 30 11814 https://doi.org/10.1007/s11814-012-0126-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0126-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Behdani Fattaneh School of Chemical Engineering, University College of Engineering, University of Tehran, P. O. Box 11365-4563, Tehran, Iran aut NATIONALLICENCE 700 1- Rafsanjani Alireza School of Chemical Engineering, University College of Engineering, University of Tehran, P. O. Box 11365-4563, Tehran, Iran aut NATIONALLICENCE 700 1- Torab-Mostaedi Meisam Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P. O. Box 11365-8486, Tehran, Iran aut NATIONALLICENCE 700 1- Mohammadpour Seyed School of Chemical Engineering, University College of Engineering, University of Tehran, P. O. Box 11365-4563, Tehran, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 448-455 0256-1115 30:2<448 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer