Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

The synthesis and application of the Fe3O4@SiO2 nanoparticles functionalized with 3-aminopropyltriethoxysilane as an efficient sorbent for the adsorption of ethylparaben from wastewater: Synthesis, kinetic, thermodynamic and equilibrium studies

Fri Jul 1 20:36:11 2022

(2019) The synthesis and application of the Fe3O4@SiO2 nanoparticles functionalized with 3-aminopropyltriethoxysilane as an efficient sorbent for the adsorption of ethylparaben from wastewater: Synthesis, kinetic, thermodynamic and equilibrium studies. Journal of Environmental Chemical Engineering. ISSN 22133437 (ISSN)

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

The current study aimed at employing Fe3O4@SiO2 nanoparticles functionalized with NH2 (FSN) to remove Ethylparaben (EtP) from aqueous solutions. A modified co-precipitation method was applied to prepare the nanoadsorbent. The FTIR, XRD, SEM, VSM, and BET techniques were used to determine the structure, particle size, magnetic properties and specific surface area of adsorbent. The performance of FSN in the adsorption of EtP was investigated and removal performance obtained 93 under the selected conditions (pH, 7; adsorbent dosage, 0.4g L-1; EtP concentration, 50mgL-1; and reaction time, 90min). It was found that FSN nanoadsorbent can be used for five cycles with no significant activity loss in the removal of ethylparaben. In order to determine of the adsorption capacity of the adsorbent and to investigate the mechanisms of adsorption, equilibrium data were fitted onto the Freundlich, Temkin, and Langmuir isotherms. The results was showed, the Freundlich isotherm model has the best fit with the experimental data. Furthermore, the kinetic models including pseudo-first-order, pseudo-second-order, intraparticle diffusion and elovich were applied to investigate the reaction pathways and determination of mechanism of sorption reaction. As reported results the best kinetic model was the pseudo-second-order model. Also the thermodynamic studies declared the sorption of EtP onto FSN was endothermic and spontaneous. © 2019 Elsevier Ltd.

Item Type: Article
Creators:
CreatorsEmail
Sheikhmohammadi, A.UNSPECIFIED
Safari, M.UNSPECIFIED
Alinejad, A.UNSPECIFIED
Esrafili, A.UNSPECIFIED
Nourmoradi, H.UNSPECIFIED
Asgari, E.UNSPECIFIED
Keywords: Adsorption Ethylparaben Fe3O4@SiO2-NH2nanocomposite Wastewater Iron oxides Isotherms Kinetic parameters Kinetic theory Magnetite Nanoparticles Particle size Precipitation (chemical) Silica Silica nanoparticles SiO2 nanoparticles Synthesis (chemical) 3-aminopropyltriethoxysilane Coprecipitation method Freundlich isotherm model Intra-particle diffusion Pseudo-second order model Thermodynamic studies
Divisions:
Journal or Publication Title: Journal of Environmental Chemical Engineering
Journal Index: Scopus
Volume: 7
Number: 5
Identification Number: https://doi.org/10.1016/j.jece.2019.103315
ISSN: 22133437 (ISSN)
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/2483

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