Degradation of Methylene Blue Dye Using Activated Carbon Obtained From Bio-Waste

Abstract

Activated carbon (AC) was derived from waste Jack fruit leaves by chemical activation with KOH followed by pyrolysis at 600℃ for 5 hours in closed crucible in muffle furnace. The structural and morphological analysis of as synthesized activated carbon was done by Raman spectroscopy, field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The synthesized activated carbon has been used for removal of Methylene Blue (MB) dye from an aqueous solution. Batch adsorption experiments were carried out as a function of contact time, initial dye concentration and adsorbent dose. The adsorption data of MB dye was analysed by Langmuir and Freundlich adsorption isotherms .It was observed that Langmuir model can be best fitted with regression coefficient R 2 =0.9959 as comparison to R 2 =0.875 for Freundlich Isotherm. The results indicate that adsorption of MB on activated carbon followed by Langmuir model with maximum monolayer adsorption capacity was found to be 84.03 mg/g.