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New Generation Adsorbents for the Removal of Fluoride From Water and Wastewater: A Review Publisher



Ghosh S1 ; Malloum A2, 3 ; Igwegbe CA4 ; Ighalo JO4, 5 ; Ahmadi S6 ; Dehghani MH7, 8 ; Othmani A9 ; Gokkus O10 ; Mubarak NM11, 12
Authors
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Authors Affiliations
  1. 1. Department of Genetics, Faculty of Natural and Agricultural Sciences, University of the Free State, Bloemfontein, 9301, South Africa
  2. 2. Department of Physics, Faculty of Science, University of Maroua, PO BOX 46, Maroua, Cameroon
  3. 3. Department of Chemistry, University of the Free State, PO BOX 339, Bloemfontein, 9300, South Africa
  4. 4. Department of Chemical Engineering, Nnamdi Azikiwe University, P. M. B. 5025, Awka, Nigeria
  5. 5. Department of Chemical Engineering, University of Ilorin, P. M. B. 1515, Ilorin, Nigeria
  6. 6. Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  7. 7. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  8. 8. Institute for Environmental Research, Center for Solid Waste Research, Tehran University of Medical Sciences, Tehran, Iran
  9. 9. Department of Chemistry, Faculty of Sciences of Monastir, University of Monastir, Avenue of the Environment, Monastir, 5019, Tunisia
  10. 10. Erciyes University, Engineering Faculty Environmental Engineering Department, Kayseri, 38039, Turkey
  11. 11. Petroleum, and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Brunei Darussalam
  12. 12. Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University, Miri Sarawak, 98009, Malaysia

Source: Journal of Molecular Liquids Published:2022


Abstract

Water is essential for life and is threatened by the pollution and contamination generated by human activity and industries. Fluoride contamination of water is a serious problem in the world. The review article highlights on new generation adsorbents including carbon-based adsorbents, nano-adsorbents, bio-sorbents, inorganic materials, modified and composite adsorbents for purification of fluoride from water. It was indicated from the review that a Zinc oxide nanoparticles is the best adsorbents for the removal of fluoride from aqueous media, with a capacity adsorption (qmax) of 100 mg/g. The fluoride uptake best-fit both the Langmuir and Freundlich isotherm models as well as a pseudo second order kinetic model. A wide range of values for the thermodynamic parameters (both negative and positive) were reported for fluoride across different studies. Kinetic and thermodynamic, molecular modelling and simulations, knowledge gaps and future prospects are also presented. © 2021 Elsevier B.V.
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