Sorption study of methylene blue on activated carbon prepared from Jatropha curcas and Terminalia catappa seed coats

Authors : Ismaila Olalekan Saheed, Folahan Amoo Adekola, Gabriel Ademola Olatunji

Pages : 375-394

Doi:10.18596/jotcsa.287337

View : 7 | Download : 3

Publication Date : 2017-01-09

Article Type : Research Paper

Abstract :This research work targets the effectiveness of the prepared activated carbon from Jatropha curcas and Terminalia catappa seed coats for the sorption of methylene blue insert ignore into journalissuearticles values(MB); from aqueous solution. The prepared Jatropha activated carbon insert ignore into journalissuearticles values(JAC); and Terminalia activated carbon insert ignore into journalissuearticles values(TAC); were characterised using Fourier transform infrared spectroscopy insert ignore into journalissuearticles values(FTIR);, Scanning electron microscopy insert ignore into journalissuearticles values(SEM); and Branauer- Emmett-Teller insert ignore into journalissuearticles values(BET); surface area analysis. Effect of initial concentration, pH, contact time, adsorbent dose and temperature on the sorption experiments were studied and the adsorption capacity of these adsorbents were found to be 37.84 mg/g and 17.44 mg/g for methylene blue uptake by JAC and TAC respectively. The experimental data were analysed using Langmuir, Fruendlich, and Dubinin-Radushkevich isotherms. The data fitted best into Langmuir isotherm for Methylene blue-JAC and Methylene blue-TAC systems. The kinetic studies fitted into pseudo second order kinetics model. The process chemistry was exothermic.
Keywords : adsorption, activated carbon, methylene blue, kinetics, thermodynamics