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Recently Developed Adsorbing Materials for Fluoride Removal from Water and Fluoride Analytical Determination Techniques: A Review

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  • Athanasia K. Tolkou

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece)

  • Natalia Manousi

    (Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece)

  • George A. Zachariadis

    (Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece)

  • Ioannis A. Katsoyiannis

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece)

  • Eleni A. Deliyanni

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece)

Abstract

In recent years, there has been an increase in public perception of the detrimental side-effects of fluoride to human health due to its effects on teeth and bones. Today, there is a plethora of techniques available for the removal of fluoride from drinking water. Among them, adsorption is a very prospective method because of its handy operation, cost efficiency, and high selectivity. Along with efforts to assist fluoride removal from drinking waters, extensive attention has been also paid to the accurate measurement of fluoride in water. Currently, the analytical methods that are used for fluoride determination can be classified into chromatographic methods (e.g., ionic chromatography), electrochemical methods (e.g., voltammetry, potentiometry, and polarography), spectroscopic methods (e.g., molecular absorption spectrometry), microfluidic analysis (e.g., flow injection analysis and sequential injection analysis), titration, and sensors. In this review article, we discuss the available techniques and the ongoing effort for achieving enhanced fluoride removal by applying novel adsorbents such as carbon-based materials (i.e., activated carbon, graphene oxide, and carbon nanotubes) and nanostructured materials, combining metals and their oxides or hydroxides as well as natural materials. Emphasis has been given to the use of lanthanum (La) in the modification of materials, both activated carbon and hybrid materials (i.e., La/Mg/Si-AC, La/MA, LaFeO 3 NPs), and in the use of MgO nanostructures, which are found to exhibit an adsorption capacity of up to 29,131 mg g −1 . The existing analytical methodologies and the current trends in analytical chemistry for fluoride determination in drinking water are also discussed.

Suggested Citation

  • Athanasia K. Tolkou & Natalia Manousi & George A. Zachariadis & Ioannis A. Katsoyiannis & Eleni A. Deliyanni, 2021. "Recently Developed Adsorbing Materials for Fluoride Removal from Water and Fluoride Analytical Determination Techniques: A Review," Sustainability, MDPI, vol. 13(13), pages 1-26, June.
  • Handle: RePEc:gam:jsusta:v:13:y:2021:i:13:p:7061-:d:580577
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    References listed on IDEAS

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    1. Maria Cristina Collivignarelli & Alessandro Abbà & Marco Carnevale Miino & Vincenzo Torretta & Elena Cristina Rada & Francesca Maria Caccamo & Sabrina Sorlini, 2020. "Adsorption of Fluorides in Drinking Water by Palm Residues," Sustainability, MDPI, vol. 12(9), pages 1-12, May.
    2. George P. Gallios & Athanasia K. Tolkou & Ioannis A. Katsoyiannis & Katarina Stefusova & Miroslava Vaclavikova & Eleni A. Deliyanni, 2017. "Adsorption of Arsenate by Nano Scaled Activated Carbon Modified by Iron and Manganese Oxides," Sustainability, MDPI, vol. 9(10), pages 1-18, September.
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    Cited by:

    1. Athanasia K. Tolkou & Dimitrios G. Trikkaliotis & George Z. Kyzas & Ioannis A. Katsoyiannis & Eleni A. Deliyanni, 2023. "Simultaneous Removal of As(III) and Fluoride Ions from Water Using Manganese Oxide Supported on Graphene Nanostructures (GO-MnO 2 )," Sustainability, MDPI, vol. 15(2), pages 1-19, January.

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