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Carbon Encapsulated Zero-Valent Iron Nanoparticle Using Abelmoschus esculentus (Lady’s Finger) Extract as an Adsorbent for Cr(VI) in Aqueous Solution


Affiliations
1 Department of Environmental and Water Resources Engineering, School of Civil and Chemical Engineering, VIT University, Vellore, India
 

In this study, lady's finger carbon encapsulated zero-valent iron nanoparticle (LCINp) was synthesized and used as an adsorbent for Cr(VI) ions in aqueous solution. The material characterization was analysed using Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-Ray Diffraction (XRD). Factors influencing the adsorption process such as pH, adsorbent dosage, and initial Cr(VI) concentration were studied using batch sorption experiments. Langmuir, Freundlich, and Temkin isotherm models have been applied to investigate the adsorption capacity of LCINp. Pseudo-first-order, Pseudo-second order, and Elovich model have been analysed for the kinetic study. The mechanism of adsorption was examined using Boyd's model and Weber-Morris intraparticle diffusion model. The results showed that Langmuir model and Pseudo-second-order kinetic model fit well in the adsorption process. Thermodynamic analysis portrayed that the adsorption process was spontaneous and endothermic in nature.


Keywords

Iron, Nanoparticle, Adsorbent, TEM, Endothermic.
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  • Carbon Encapsulated Zero-Valent Iron Nanoparticle Using Abelmoschus esculentus (Lady’s Finger) Extract as an Adsorbent for Cr(VI) in Aqueous Solution

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Authors

Jephin Varughese Jose
Department of Environmental and Water Resources Engineering, School of Civil and Chemical Engineering, VIT University, Vellore, India
Anu Mary Ealias
Department of Environmental and Water Resources Engineering, School of Civil and Chemical Engineering, VIT University, Vellore, India
M. P. Saravanakumar
Department of Environmental and Water Resources Engineering, School of Civil and Chemical Engineering, VIT University, Vellore, India

Abstract


In this study, lady's finger carbon encapsulated zero-valent iron nanoparticle (LCINp) was synthesized and used as an adsorbent for Cr(VI) ions in aqueous solution. The material characterization was analysed using Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-Ray Diffraction (XRD). Factors influencing the adsorption process such as pH, adsorbent dosage, and initial Cr(VI) concentration were studied using batch sorption experiments. Langmuir, Freundlich, and Temkin isotherm models have been applied to investigate the adsorption capacity of LCINp. Pseudo-first-order, Pseudo-second order, and Elovich model have been analysed for the kinetic study. The mechanism of adsorption was examined using Boyd's model and Weber-Morris intraparticle diffusion model. The results showed that Langmuir model and Pseudo-second-order kinetic model fit well in the adsorption process. Thermodynamic analysis portrayed that the adsorption process was spontaneous and endothermic in nature.


Keywords


Iron, Nanoparticle, Adsorbent, TEM, Endothermic.

References