M. Saravanan, K. Ramesh, M. Kiruthiga, M. Sugirtha and K. Suridha
Abstract
Dyes are the important water pollutants. Sulphuric acid activated carbon prepared from the stalks of Gossypium hirsutum L. (Prepared carbon was designated as GHSC- Gossypium hirsutum L Stalk Carbon) was used as an adsorbent. In this present study the removal of Reactive Red Dye (RR) from its aqueous solutions by adsorption onto GHSC using batch technique. The effects of various experimental parameters on adsorption such as contact time, temperature, initial pH, initial dye concentration and sorbent dosage were examined and the optimal experimental conditions were evaluated. The percentage of removal was maximum at pH2. Experimental data obtained were fitted with linearized forms of Ho and Legergren kinetics models. Hence this is adsorption followed the second order kinetics. The adsorption data were fitted to Freundlich and Langmuir adsorption isotherms. The equilibrium data was best described by Langmuir model. The adsorption results indicated that the dye, Reactive Red can be effectively removed from its aqueous solutions by using GHSC - Gossypium hirsutum L Stalk Carbon.