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IJSEA Archive (Volume 4, Issue 4)

International Journal of Science and Engineering Applications (IJSEA)  (Volume 4, Issue 4 July-August 2015)

Characterization of Clay/Chitosan Nanocomposites and their Use for Adsorption On Mn(ΙΙ) from Aqueous Solution

F. H. Abd El-Kader ,A. M. Shehap,A.A. Bakr,Omar T. Hussein

10.7753/IJSEA0404.1004




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Keywords: MMT/Chitosan; nanocomposites; XRD; IR; adsorption

Abstract References BibText


        In this study, composites films were prepared from Chitosan biopolymer and Montmorillonite nanoclay (MMT) by dispersion of MMT into Chitosan solution with different weight percentage (2.5, 5, 7.5, 10, 12.5, 15 and 75% wt. /wt. nanoclay/chitosan), using both sonication and casting technique methods to obtain good dispersion of nanoclay. The structural properties of these nanocomposites samples examined by XRD and FTIR . The XRD patterns indicating that formation of an intercalated nanostructure as exfoliated and flocculated structure . Also the complexion of the dopant with the biopolymer was examined by FTIR studies. The experiments of Mn(ΙΙ) ions adsorption were carried out on MMT/chitosan nanocomposites. The effect of various parameters such as pH, contact time, adsorption mass, initial Mn(ΙΙ) concentration and temperature on the adsorption of Mn(ΙΙ) removal onto MMT/chitosan nanocomposites was investigated. Two adsorption isotherm models were applied Freundlich and Langmuir to fit the experimental data. Langmuir isotherm modeling was suitable for description the data at equilibrium state. The kinetic isotherm was found to follow the pseudo-second-order model. Also, the thermodynamics parameters of the adsorption such as Gibbs free energy∆G^o, entropy ∆S^o and enthalpy ∆H^o were discussed and the results demonstrate that the adsorption process is spontaneous and endothermic


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@article{El-Kader04041004,
title = "Characterization of Clay/Chitosan Nanocomposites and their Use for Adsorption On Mn(ΙΙ) from Aqueous Solution ",
journal = "International Journal of Science and Engineering Applications (IJSEA)",
volume = "4",
number = "4",
pages = "174 - 185",
year = "2015",
author = " F. H. Abd El-Kader ,A. M. Shehap,A.A. Bakr,Omar T. Hussein ",
}