Improvement of montmorillonite adsorption capacity for lead ions by modifying with hexadecyl trimethyl ammonium chloride: Characterization, modelling and optimization studies

Massoudinejad, M. and Mohseni, S. M. and Ghaderpoori, M. and Sarkhosh, M. and Sahebi, S. (2019) Improvement of montmorillonite adsorption capacity for lead ions by modifying with hexadecyl trimethyl ammonium chloride: Characterization, modelling and optimization studies. MethodsX, 6. pp. 2217-2229.

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Abstract

Heavy metal pollutants, particularly Pb are considered as critical contaminants causing harmful health risks for a human. In this study, montmorillonite modified with hexadecyl trimethyl ammonium chloride surfactant (N-HTAC) was applied as a new adsorbent for the Pb+2 adsorption from aqueous solutions. The N-HTAC was characterized by the scanning electron microscopy, x-ray diffraction, energy-dispersive x-ray spectroscopy, and Brunauer-Emmett-Teller. The central composite design using R software was chosen for modelling the effect of operating parameters. Based on the findings obtained from the analysis of variance, reduced full second-order model with multiple R2, 0.94, adjusted R2, 0.93, and LoF, 0.96, was represented satisfactory adjustment with experimental data. The Solver “add-ins” was employed to gain the optimum conditions for the modelling. The optimum operating points giving the maximum Pb+2 removal (99.99), were found to be initial Pb+2 concentration: 0.1 mg L1− adsorbent dosage: 4.33 g L-1, HTAC dosage: 4.19 g L-1, pH: 7.13, temperature: 28.06ºC, and the reaction time: 103.4 min. The findings of the study showed that by enhancing and improving natural adsorbents, a significant amount of environmental pollutants can be eliminated. • In this study, a new modified adsorbent (N-HTAC) was used to remove lead ions. • The results of this study showed that the N-HTAC used has high efficiency (99.99) in the removal of lead. • The results of this study and the data obtained can be used to supplement the information on the removal of contaminants with adsorbents. © 2019 The Author(s)

Item Type: Article
Additional Information: Cited By :1 Export Date: 16 February 2020 Correspondence Address: Ghaderpoori, M.; Department of Environmental Health Engineering, School of Health and Nutrition, Lorestan University of Medical SciencesIran; email: ghaderpoori.m@lums.ac.ir
Uncontrolled Keywords: Hexadecyl trimethyl ammonium chloride Modeling Montmorillonite modified with hexadecyl trimethyl ammonium chloride surfactant (N-HTAC) was applied as a new adsorbent for the adsorption of Pb (II) ions Nano clay Optimization Pb (II) Response surface methodology adsorbent chloride lead montmorillonite trimethylammonium salt derivative unclassified drug adsorption Article brunauer emmett teller energy dispersive X ray spectroscopy field emission scanning electron microscopy heavy metal removal pH pollutant priority journal reaction time software surface area X ray powder diffraction
Subjects: WB Practice of Medicine
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib1 lib1
Date Deposited: 21 Jun 2020 07:36
Last Modified: 21 Jun 2020 07:36
URI: http://eprints.mums.ac.ir/id/eprint/18499

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