Adsorption of Eosin Dyes Onto Activated Carbon Prepared from Wood of Adina cardifolia Hook – A Kinetic and Isotherm Study

Abstract

The performance of activated carbon prepared from Adina cardifolia Hook has been investigated for the adsorption of using dye from aqueous solution. Eosin dye is anionic in nature and highly toxic. The effects of initial dye concentration and contact time on adsorption of eosin have been studied in batch mode. The adsorption rate data correlated with pseudo first order and pseudo second-order kinetic models using Legergren and Ho equations respectively. Present adsorption system well fitted to pseudo second order kinetic model. The intra particle diffusion was the rate determining step. Equilibrium data were fitted into Langmuir, Freundlich isotherms. The order of best describing isotherm was given based on R² value.