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Article

Iron Oxide (Fe3O4)-Supported SiO2 Magnetic Nanocomposites for Efficient Adsorption of Fluoride from Drinking Water: Synthesis, Characterization, and Adsorption Isotherm Analysis

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Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Khyber Pakhtunkhwa 22060, Pakistan
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Department of Landscape and Architecture, School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
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Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Khyber Pakhtunkhwa 22060, Pakistan
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Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Mycology and Plant Disease Survey Department, Plant Pathology Research Institute, ARC, Giza 12511, Egypt
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Plant Production Department, College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
*
Authors to whom correspondence should be addressed.
First two authors equally contributed in the manuscript.
Academic Editor: Matthias Zessner
Water 2021, 13(11), 1514; https://doi.org/10.3390/w13111514
Received: 19 March 2021 / Revised: 15 April 2021 / Accepted: 20 April 2021 / Published: 27 May 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
This research work reports the magnetic adsorption of fluoride from drinking water through silica-coated Fe3O4 nanoparticles. Chemical precipitation and wet impregnation methods were employed to synthesize the magnetic nanomaterials. Moreover, the synthesized nanomaterials were characterized for physicochemical properties through scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray powder diffraction. Screening studies were conducted to select the best iron oxide loading (0.0–1.5 wt%) and calcination temperature (300–500 °C). The best selected nanomaterial (0.5Fe-Si-500) showed a homogenous FeO distribution with a 23.79 nm crystallite size. Moreover, the optimized reaction parameters were: 10 min of contact time, 0.03 g L1 adsorbent dose, and 10 mg L−1 fluoride (F) concentration. Adsorption data were fitted to the Langmuir and Freundlich isotherm models. The Qm and KF (the maximum adsorption capacities) values were 5.5991 mg g−1 and 1.869 L g1 respectively. Furthermore, accelerated adsorption with shorter contact times and high adsorption capacity at working pH was among the outcomes of this research work. View Full-Text
Keywords: magnetic nanoparticle; fluoride (F) chemical precipitation method; wet impregnation method; Fe3O4-SiO2 nanocomposites; reaction kinetics magnetic nanoparticle; fluoride (F) chemical precipitation method; wet impregnation method; Fe3O4-SiO2 nanocomposites; reaction kinetics
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MDPI and ACS Style

Sarwar, A.; Wang, J.; Khan, M.S.; Farooq, U.; Riaz, N.; Nazir, A.; Mahmood, Q.; Hashem, A.; Al-Arjani, A.-B.F.; Alqarawi, A.A.; Abd_Allah, E.F. Iron Oxide (Fe3O4)-Supported SiO2 Magnetic Nanocomposites for Efficient Adsorption of Fluoride from Drinking Water: Synthesis, Characterization, and Adsorption Isotherm Analysis. Water 2021, 13, 1514. https://doi.org/10.3390/w13111514

AMA Style

Sarwar A, Wang J, Khan MS, Farooq U, Riaz N, Nazir A, Mahmood Q, Hashem A, Al-Arjani A-BF, Alqarawi AA, Abd_Allah EF. Iron Oxide (Fe3O4)-Supported SiO2 Magnetic Nanocomposites for Efficient Adsorption of Fluoride from Drinking Water: Synthesis, Characterization, and Adsorption Isotherm Analysis. Water. 2021; 13(11):1514. https://doi.org/10.3390/w13111514

Chicago/Turabian Style

Sarwar, Amna, Jin Wang, Muhammad S. Khan, Umar Farooq, Nadia Riaz, Abdul Nazir, Qaisar Mahmood, Abeer Hashem, Al-Bandari F. Al-Arjani, Abdulaziz A. Alqarawi, and Elsayed F. Abd_Allah 2021. "Iron Oxide (Fe3O4)-Supported SiO2 Magnetic Nanocomposites for Efficient Adsorption of Fluoride from Drinking Water: Synthesis, Characterization, and Adsorption Isotherm Analysis" Water 13, no. 11: 1514. https://doi.org/10.3390/w13111514

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