naa a22 4500 510821596 CHVBK 20180411083535.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11814-012-0130-0 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0130-0 Kinetic and thermodynamic study of Eu(III) sorption on natural red earth in South China [Elektronische Daten] [Tao Yu, Wang-Suo Wu, Zhi-Rong Liu, Si-Wei Zhang, Zheng-Wei Nie] We did a kinetic and thermodynamic study of Eu(III) sorption on natural red earth (NRE) in South China as a function of contact time, pH values, ionic strength, humic acid (HA) and temperature under ambient conditions. Linear and nonlinear regression methods in selecting the optimum sorption isotherm were applied on the experimental data. The results suggest that sorption of Eu(III) on NRE can be described by a pseudo-second-order rate equation and strongly dependent on ionic strength at pH<7. Sorption of Eu(III) on NRE increased with increasing temperature, two-parameter and three-parameter isotherms were applied to analysis the equilibrium adsorption data, and a comparison of linear and nonlinear regression methods was done. The thermodynamic parameters (ΔH0, ΔS0 and ΔG0) of Eu(III) sorption on NRE at different temperatures were calculated from the temperature-dependent sorption isotherms, indicating that the sorption process of Eu(III) was spontaneous. The results showed that the nonlinear method is a better way to obtain the isotherm parameters and the data were in good agreement with the Freundlich isotherm model. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Kinetic nationallicence Thermodynamic nationallicence Sorption nationallicence Eu(III) nationallicence NRE nationallicence Yu Tao College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut Wu Wang-Suo Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, Gansu, P. R. China aut Liu Zhi-Rong College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut Zhang Si-Wei College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut Nie Zheng-Wei College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 440-447 0256-1115 30:2<440 2013 30 11814 https://doi.org/10.1007/s11814-012-0130-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0130-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yu Tao College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut NATIONALLICENCE 700 1- Wu Wang-Suo Radiochemistry Laboratory, School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, Gansu, P. R. China aut NATIONALLICENCE 700 1- Liu Zhi-Rong College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut NATIONALLICENCE 700 1- Zhang Si-Wei College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut NATIONALLICENCE 700 1- Nie Zheng-Wei College of Chemistry, Biology and Materials Science, East China Institute of Technology, 344000, Fuzhou, Jiangxi, P. R. China aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 440-447 0256-1115 30:2<440 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer