ADSORPTIVE REMOVAL OF CRYSTAL VIOLET DYE FROM AN AQUEOUS SOLUTION USING GUAR GUM - G - POLY (METHYL METHACRYLATE) SUPERABSORBENT NANOCOMPOSITEKARTIKA RATHORE AND SANGEETA LOONKERAbstract In this paper, we report use of guar gum-g-poly (methyl methacrylate) superabsorbent nano composite for the removal of crystal violet dye. The adsorption experiments were carried out using batch technique at different pH values. UV-Visible spectro photometry was used for determination of dye concentration. Result indicates that prepared composite showed highest percentage removal of 78% at pH value of 8. The effect of various variables such as adsorbent dose, initial crystal violet dye concentration, time of contact and pH on percentage removal of dye was investigated. The adsorption isotherms were studied to evaluate adsorption characteristics of nano composite used. The study of adsorption isotherm shows that adsorption process of crystal violet follow both Freundlich and Langmuir isotherm. The kinetics of adsorption was also studied and result shows that it follows pseudo second order reaction kinetics.
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