title: Sorption behavior of florisil for the removal of antimony ions from aqueous solutions.
abstract: Florisil was employed for the sorption of antimony ions from aqueous solutions. A detailed study of the process was performed by varying the sorption time, pH, and temperature. The sorption was found to be fast, equilibrium was reached within 15 min. Moreover, a maximum sorption has been achieved from solution when the pH ranges between 1-10. From kinetic experiments it follows that the process correlate with the second-order kinetic model. The overall rate process appears to be influenced by both boundary layer diffusion and intra-particle diffusion. The Langmuir and Dubinin-Radushkevich (D-R) type sorption isotherms can be applied to fit and interpret the sorption data. The mean energy of adsorption (9.73 kJ mol(-1)) was calculated from the Dubinin-Radushkevich (D-R) adsorption isotherm at room temperature. Furthermore, the thermodynamic parameters for the sorption were also determined, and the deltaH0 and deltaG0 values indicate a spontaneous endothermic behavior.
authors: College of Chemistry, Liaoning University, Shenyang 110036, People's Republic of China. zhanglei63@126.com
authors: Lei
authors: L
authors: Zhang
authors: Qing
authors: Q
authors: Lin
authors: Xingjia
authors: X
authors: Guo
authors: Francis
authors: F
authors: Verpoort
mesh_terms: D000327:Adsorption; D000965:Antimony / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D017633:Magnesium Silicates / Q000737:chemistry*; D008956:Models, Chemical; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D017633:Magnesium Silicates; D014874:Water Pollutants, Chemical; C005013:Florisil; D000965:Antimony