Modeling Studies on Adsorption of Pb(II) and Hg(II) by using Acalypha Indica

International Journal of Applied Chemistry

© 2014 by SSRG - IJAC Journal

Volume 1 Issue 2

Year of Publication : 2014

Authors : N.P.Krishnan, M. Ilayaraja, R. Sayee Kannan

10.14445/23939133/IJAC-V1I2P103

How to Cite?

N.P.Krishnan, M. Ilayaraja, R. Sayee Kannan, "Modeling Studies on Adsorption of Pb(II) and Hg(II) by using Acalypha Indica," SSRG International Journal of Applied Chemistry, vol. 1,  no. 2, pp. 12-22, 2014. Crossref, https://doi.org/10.14445/23939133/IJAC-V1I2P103

Abstract:

The research article describes the experimental and modeling study for the adsorptive removal of Pb (II) and Hg (II) from aqueous matrices using an Acalypha Indica (ACI) as a low cost and eco-friendly adsorbent. The rate of adsorption was investigated under various experimental parameters such as contact time, adsorbent dose, metal ion concentration and temperature. The kinetics, equilibrium and thermodynamic studies were assessed to find out the efficiency of the adsorption process. The equilibrium uptake capacity of the adsorption process was found with Langmuir and Jovanoic adsorption isotherm equations and it was evaluated by dimensionless separation factor (RL). The dynamics of adsorption was predicted by pseudo-first order, pseudo-second order Lagergren’s equation and intra - particle diffusion model. Adsorption feasibility was assessed with thermodynamic parameters such as isosteric heat of adsorption (ΔH◦), standard entropy (ΔS◦) and Gibbs free energy (ΔG◦) using Vant Hoff plot. The adsorbent was characterized with FT-IR, SEM with EDX, BET and XRD.

Keywords:

Acalypha Indica , Adsorption, Mercury ,Modeling, Lead

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