Abstract
ISOTHERM ANALYSIS ON THE REMOVAL OF METHYLENE BLUE DYE FROM ARTIFICIAL WASTEWATER USING NANO-POROUS CARBON

A. Arasakumar and S. Arivoli*

ABSTRACT

The use of low-cost, easily obtained and eco-friendly adsorbents has been employed as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated nano carbon prepared from Pandanus Amaryllifolius Stem for the removal of methylene blue (MB) dye from simulated wastewater. The effect of pH, contact time, initial concentration and amount of adsorbent were considered. In order to investigate the mechanism of the adsorption process, several kinetic models including pseudo-first order, pseudo-second order, Elovich and intra-particle diffusion were used. In addition, equilibrium data was analyses to Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Hurkins-Jura, Halsay, Radlich- Peterson, Jovanovic and BET isotherm models. The obtained results showed that the adsorption of the methylene blue was enhanced with increasing initial dye concentration, pH and contact time. The optimum pH was 9. Considering the values of R2 (0.999), BET isotherm model and pseudo-second order kinetic model had the best fitness.

Keywords: Methylene Blue (MB), Activated Pandanus Amaryllifolius Stem Nano Carbon (APANC), Isotherm Models, Thermodynamic and Kinetic studies.


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