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  • Sorption behavior of florisil for the removal of antimony ions from aqueous solutions.

Sorption behavior of florisil for the removal of antimony ions from aqueous solutions.

Water science and technology : a journal of the International Association on Water Pollution Research (2011-10-08)
Lei Zhang, Qing Lin, Xingjia Guo, Francis Verpoort
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.

MATERIALS
Product Number
Brand
Product Description

Supelco
Florisil® Adsorbent for Chromatography, 60-100 mesh
Supelco
Florisil® Adsorbent for Chromatography, 30-60 mesh
Sigma-Aldrich
Florisil®, 100-200 mesh
Supelco
Florisil®, PR grade, 60-100 mesh, coarse powder
Supelco
Florisil®, 100-200 mesh, fine powder
Supelco
Florisil®, for the determination of hydrocarbon acc. to ISO 9377-2
Supelco
Florisil®, <200 mesh, fine powder
Supelco
Florisil® PR, PR grade (analysis acc. to FDA)