Equilibrium and Kinetics of Adsorption of Cationic Dyes by STISHOVITE Clay – TiO2 Nanocomposite
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2012, Vol 2, Issue 6
Abstract
Abstract: In this study an attempt has been made to study the feasibility of removal of methyl violet using Stishovite-TiO[sub]2[/sub] nanocomposite as an adsorbent. The commercially available Stishovite and TiO[sub][sup]2[/sup][/sub] are stirred with alcohol, dried and used. Batch adsorption experiments have been conducted under various operating parameters like initial dye concentration, contact time, adsorbent dose, p[sup]H[/sup] and temperature. The equilibrium data fitted well with the Langmuir and Freundlich isotherms. From these the adsorption efficiency, adsorption energy, adsorption capacity, intensity of adsorption and dimensionless separation factor all are calculated. The experimental data fitted very well with pseudo second order kinetic model and Elcovich model suggesting chemisorption which is substantiated by desorption studies.
Authors and Affiliations
Venkateswaran Vinayagam, Priya Thangaraju
Keywords
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