Study of Removal of Cationic Dye from Waste Aqua Using Chromatographic Grade Silica as Adsorbent

Abstract

The adsorption of cationic dye, Basic Red 13 from aqueous solution onto silica has been studied. The time growth adsorption as a function of the amount of adsorbent, pH, initial dye concentration as well as the temperature was measured of the system. Adsorption was found to follow a first-order process. Various isotherm and thermodynamic parameters for the adsorption of dye have been calculated. Isotherms were used to identify formation of either monolayer or multilayer formation whereas thermodynamic and other parameter indicated that the dye adsorption process was physisoption as well as spontaneous and exothermic in nature.

Keywords:

• Basic Red 13
• kinetic study
• silica
• studies of different isotherms
• thermodynamic parameters

Acknowledgments

The authors are thankful to P. Bahadur, Department of Chemistry, VNSGU, Surat for his suggestion and constructive criticism.