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Simultaneous Removal of As(III) and Fluoride Ions from Water Using Manganese Oxide Supported on Graphene Nanostructures (GO-MnO 2 )

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  • Athanasia K. Tolkou

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
    Department of Chemistry, International Hellenic University, 65404 Kavala, Greece)

  • Dimitrios G. Trikkaliotis

    (Department of Chemistry, International Hellenic University, 65404 Kavala, Greece)

  • George Z. Kyzas

    (Department of Chemistry, International Hellenic University, 65404 Kavala, 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 the present research, the use of manganese oxides supported on graphene nanostructures (GO-MnO 2 ), which support the synergistic action of adsorption and oxidation, in the combined removal of arsenic and fluoride from drinking water was studied. The simultaneous occurrence of fluoride and arsenic in groundwater is one of the major environmental problems, occurring mainly in anhydrous regions of Latin America and the world. These pollutants cause significant health problems and are difficult to remove simultaneously from drinking water. The structure of GO-MnO 2 was characterized by the application of FTIR, EDS and SEM techniques. The effects of the adsorbent’s dosage, the pH value, the contact time and the initial concentrations of As(III) and F ions (F − ) were examined with respect to the removal of As(III) and F ions. According to the results, the presence of arsenic enhances fluoride removal with increasing arsenic concentrations, and the presence of fluoride enhances arsenic removal with increasing fluoride concentrations, mainly at a neutral pH value. The co-presence removal efficiencies were 89% (a residual concentration of 1.04 mg/L) for fluoride and about 97% (a residual concentration of 2.89 μg/L) for arsenic.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:2:p:1179-:d:1028957
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    References listed on IDEAS

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    1. Asterios Laskaridis & Ioannis Sarakatsianos & Nikolaos Tzollas & Ioannis A. Katsoyiannis, 2020. "Simultaneous Removal of Arsenate and Chromate from Ground- and Surface- Waters by Iron-Based Redox Assisted Coagulation," Sustainability, MDPI, vol. 12(13), pages 1-20, July.
    2. 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.
    3. Athanasia K. Tolkou & George Z. Kyzas & Ioannis A. Katsoyiannis, 2022. "Arsenic(III) and Arsenic(V) Removal from Water Sources by Molecularly Imprinted Polymers (MIPs): A Mini Review of Recent Developments," Sustainability, MDPI, vol. 14(9), pages 1-16, April.
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