EXPLORING THE ADSORPTION POTENTIAL OF COAL FLY ASH AND ZEOLITE FOR REMOVAL OF ACID VIOLET 19 DYE AND ITS PHYTOTOXICITY ASSESSMENTRITI THAPAR KAPOORAbstract The present study deals with the effect of coal fly ash and zeolite on Acid violet 19 dye removal from aqueous solution under different experimental conditions such as exposure time, adsorbent dose, pH and temperature. The maximum adsorption of Acid violet 19 dye was observed at pH2 with optimum adsorbent dose 1.2g at 60 0C. Zeolite synthesized from coal fly ash showed significant removal of Acid violet 19 dye from aqueous solution as compared to coal fly ash. Equilibrium data were examined by Langmuir and Freundlich isotherms. Langmuir isotherm appeared as the best fit model with maximum 0.88 mg/g adsorption capacity. The phytotoxicity study revealed that growth and biochemical components of fenugreek seeds were significantly increased with zeolite treated dye solution in comparison to coal fly ash. Hence, zeolite can be used as a low cost, effective and economically feasible adsorbent for removal of acid violet 19 dye for treatment of industrial effluent. |