ADSORPTION ISOTHERMS AND PARAMETRIC INFLUENCE ON DEGRADATION OF BRILLIANT RED DYE USING WATERMELON SHELL BASED ACTIVATED CARBONVIJETA ARORA AND D.P. TIWARI
Adsorption behavior of textile brilliant red (BR) dye on laboratory synthesized activated watermelon shell powder (AWMSP) based adsorbent was investigated in the present study. The prepared adsorbent was characterized by various techniques SEM, BET. Optimized parameters were calculated as a result of experimenting under different process controlling parameters. The effect of initial BR concentration, dosage, pH and time of contact was observed. The result shows maximum dye removal efficiency reports to 92%. The kinetic study was performed by pseudo first order model and second order model. Elovich-equation and intra-particle diffusion models were used to determine the adsorption mechanism. The equilibrium data of adsorption was analyzed by Langmuir, Temkin and Freundlich isotherms where Langmuir shows the best suitability favoring monolayer adsorption. This study reveals efficiency potential of a waste product watermelon shell in removing BR dye from the aqueous solution.
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