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

Year 2017, Volume: 4 Issue: 1, 375 - 394, 09.01.2017

Ismaila Olalekan Saheed Folahan Amoo Adekola , Gabriel Ademola Olatunji

https://doi.org/10.18596/jotcsa.287337

Cited By: 15

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 (MB) from aqueous solution. The prepared Jatropha activated carbon (JAC) and Terminalia activated carbon (TAC) were characterised using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and Branauer- Emmett-Teller (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

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