References

  1. Q.H. Guo, Y.W. Cao, J.X. Li, X.B. Zhang, Y.X. Wang, Natural attenuation of geothermal arsenic from Yangbajain power plant discharge in the Zangbo River, Tibet, China, Appl. Geochem., 62 (2015) 164–170.
  2. Q.H. Guo, Y.X. Wang, W.B. Liu, As and F contamination of river water due to wastewater discharge of the Yangbajing geothermal power plant, Tibet, China, Environ. Geol., 56 (2008) 197–205.
  3. S. Jagtap, M.K. Yenkie, N. Labhsetwar, S. Rayalu, Fluoride in drinking water and defluoridation of water, Chem. Rev., 112 (2012) 2454–246.
  4. J. Singh, P. Singh, A. Singh, Fluoride ions vs removal technologies: a study, Arabian J. Chem., 9 (2016) 815–824.
  5. Q.H. Guo, Hydrogeochemistry of high-temperature geothermal systems in China: a review, Appl. Geochem., 27 (2012) 1887–1898.
  6. W.Z. Gai, Z.Y. Deng, A comprehensive review of adsorbents for fluoride removal from water: performance, water quality assessment and mechanism, Environ. Sci. Water Res. Technol., 7 (2021) 1362–1386.
  7. S.V. Jadhav, E. Bringas, G.D. Yadav, V.K. Rathod, I. Ortiz, K.V. Marathe, Arsenic and fluoride contaminated groundwaters: a review of current technologies for contaminants removal, J. Environ. Manage., 162 (2015) 306–325.
  8. Meenakshi, R.C. Maheshwari, Fluoride in drinking water and its removal, J. Hazard. Mater., 137 (2006) 456–463.
  9. X.Y. Hu, F. Zhu, L.H. Kong, X.J. Peng, A novel precipitant for the selective removal of fluoride ion from strongly acidic wastewater: synthesis, efficiency, and mechanism, J. Hazard. Mater., 403 (2021) 124039–124045.
  10. J.J. Garcia-Sanchez, M. Solache-Rios, V. Martinez-Miranda, Removal of fluoride ions by calcium
    hydroxide-modified iron oxides, Desal. Water Treat., 94 (2017) 31–39.
  11. Z.Z. Wu, J.F. Su, A. Ali, X.F. Hu, Z. Wang, Study on the simultaneous removal of fluoride, heavy metals and nitrate by calcium precipitating strain Acinetobacter sp. H12, J. Hazard. Mater., 405 (2021) 124255–124260.
  12. D. Tang, G. Zhang, Efficient removal of fluoride by hierarchical Ce–Fe bimetal oxides adsorbent: thermodynamics, kinetics and mechanism, Chem. Eng. J., 283 (2016) 721–729.
  13. J. Wang, D.J. Kang, X.L. Yu, M.F. Ge, Y.T. Chen, Synthesis and characterization of Mg–Fe–La trimetal composite as an adsorbent for fluoride removal, Chem. Eng. J., 264 (2015) 506–513.
  14. J.J. Garcia-Sanchez, M. Solache-Ríos, M.T. Alarcon-Herrera, V. Martinez-Miranda. Removal of fluoride from well water by modified iron oxides in a column system, Desal. Water Treat., 57 (2016) 2125–2133.
  15. J.B. Chen, R.J. Yang, Z.Y. Zhang, D.Y. Wu, Removal of fluoride from water using aluminum hydroxide-loaded zeolite synthesized from coal fly ash, J. Hazard. Mater., 421 (2022) 126817, doi:10.1016/j.jhazmat.2021.126817.
  16. G. Vazquez-Mejia, M. Solache-Rios, V. Martinez-Miranda, Removal of fluoride and arsenate ions from aqueous solutions and natural water by modified natural materials, Desal. Water Treat., 85 (2017) 271–281.
  17. S.P. Shukla, S. Tiwari, M. Tiwari, D. Mohan, G. Pandey, Removal of fluoride from aqueous solution using Psidium guajava leaves, Desal. Water Treat., 62 (2017) 418–425.
  18. O. Gulnaz, A. Kaya, S. Dincer, The reuse of dried activated sludge for adsorption of reactive dye, J. Hazard. Mater., 134 (2006) 190–196.
  19. T. Urase, T. Kikuta, Separate estimation of adsorption and degradation of pharmaceutical substances and estrogens in the activated sludge process, Water Res., 39 (2005) 1289–1300.
  20. Y. Zhou, S. Xia, J. Zhang, Z. Zhang, S.W. Hermanowicz, Adsorption characterizations of biosorbent extracted from waste activated sludge for Pb(II) and Zn(II), Desal. Water Treat., 57 (2016) 9343–9353.
  21. B. Veenhuyzen, S. Tichapondwa, C. Hörstmann, E. Chirwa, H.G. Brink, High capacity Pb(II) adsorption characteristics onto raw- and chemically activated waste activated sludge, J. Hazard. Mater., 416 (2021) 125943–125949.
  22. J. Zeng, J.M. Gao, Y.P. Chen, P. Yan, Y. Dong, Y. Shen, J.S. Guo, N. Zeng, P. Zhang, Composition and aggregation of extracellular polymeric substances (EPS) in hyperhaline and municipal wastewater treatment plants, Sci. Rep., 6 (2016) 26721–26729.
  23. M. Kowalski, K. Kowalska, J. Wiszniowski, J. Turek-Szytow, Qualitative analysis of activated sludge using FT-IR technique, Chem. Pap., 72 (2018) 2699–2706.
  24. M.J. Zhang, J. Yang, H.X. Wang, Q. Lv, J.B. Xue, Enhanced removal of phosphate from aqueous solution using Mg/Fe modified biochar derived from excess activated sludge: removal mechanism and environmental risk, Environ. Sci. Pollut. Res., 28 (2021) 16282–16297.
  25. Z.D. Zhang, Q. Li, X.L. Luo, H.C. Jiang, Q.F. Zheng, L.P. Zhao, J.H. Wang, Research on characteristics of soil clay mineral evolution in paddy field and dry land by XRD spectrum, Spectrosc. Spect. Anal., 34 (2014) 2273–2278.
  26. J. He, T.S. Siah, J.P. Chen, Performance of an optimized Zr-based nanoparticle-embedded PSF blend hollow fiber membrane in treatment of fluoride contaminated water, Water Res., 56 (2014) 88–97.
  27. Z. Jin, Y. Jia, T. Luo, L.T. Kong, J.H. Liu, Efficient removal of fluoride by hierarchical MgO microspheres: performance and mechanism study, Appl. Surf. Sci., 357 (2015)1080–1088.
  28. N.A. Oladoja, S. Hu, J.E. Drewes, B. Helmreich, Insight into the defluoridation efficiency of nano magnesium oxide in groundwater system contaminated with hexavalent chromium and fluoride, Sep. Purif. Technol., 162 (2016) 195–202.
  29. J.C. Burillo, L. Ballinas, G. Burillo, E. Guerrero-Lestarjette, D. Lardizabal-Gutierrez, H. Silva-Hidalgo, Chitosan hydrogel synthesis to remove arsenic and fluoride ions from groundwater, J. Hazard. Mater., 417 (2021) 126070–126076.
  30. M. Wang, X.L. Yu, C.L. Yang, X.Q. Yang, M.Y. Lin, L.T. Guan, M.F. Ge, Removal of fluoride from aqueous solution by Mg-Al-Zr triple-metal composite, Chem. Eng. J., 322 (2017) 246–253.
  31. E. Kumar, A. Bhatnagar, M.K. Ji, W. Jung, S.H. Lee, S.J. Kim, G. Lee, H. Song, J.Y. Choi, J.S. Yang, B.H. Jeona, Defluoridation from aqueous solutions by granular ferric hydroxide (GFH), Water Res., 43 (2009) 490–498.
  32. Y. Liu, Y. Li, X.P. Yan, Preparation, characterization, and application of L‐cysteine functionalized multiwalled carbon nanotubes as a selective sorbent for separation and preconcentration of heavy metals, Adv. Funct. Mater., 18 (2008) 1536–1543.
  33. R.L. Ramos, J. Ovalle-Turrubiartes, M.A. Sanchez-Castillo, Adsorption of fluoride from aqueous solution on aluminumimpregnated carbon, Carbon, 37 (1999) 609–617.
  34. C. Chakrapani, B.C. Suresh, K. Vani, K.S. Rao, Adsorption kinetics for the removal of fluoride from aqueous solution by activated carbon adsorbents derived from the peels of selected citrus fruits, J. Chem., 7 (2010) 419–427.
  35. Y. Çengeloğlu, E. Kır, M. Ersöz, Removal of fluoride from aqueous solution by using red mud, Sep. Purif. Technol., 28 (2002) 81–86.
  36. Y. Li, S.K. Yang, Q.L. Jiang, J. Fang, The adsorptive removal of fluoride from aqueous solution by modified sludge: optimization using response surface methodology, Int. J. Environ. Res. Public Health, 15 (2018) 826, doi: 10.3390/ijerph15040826.
  37. G. Alagumuthu, M. Rajan, Equilibrium and kinetics of adsorption of fluoride onto zirconium impregnated cashew nut shell carbon, Chem. Eng. J., 158 (2010) 451–457.
  38. H. Paudyal, B. Pangeni, K. Inoue, H. Kawakita, K. Ohto, H. Harada, S. Alam, Adsorptive removal of fluoride from aqueous solution using orange waste loaded with multi-valent metal ions, J. Hazard. Mater., 192 (2011) 676–682.
  39. K. Singh, D.H. Lataye, K.L. Wasewar, Removal of fluoride from aqueous solution by using bael (Aegle
    marmelos
    ) shell activated carbon: kinetic, equilibrium and thermodynamic study, J. Fluorine Chem., 194 (2017) 23–32.
  40. R. Mariappan, R. Vairamuthu, A. Ganapathy, Use of chemically activated cotton nut shell carbon for the removal of fluoride contaminated drinking water: kinetics evaluation, Chin. J. Chem. Eng., 23 (2015) 710–721.
  41. S. Gao, J. Cui, Z.G. Wei, Study on the fluoride adsorption of various apatite materials in aqueous solution, J. Fluorine Chem., 130 (2009) 1035–1041.
  42. M.G. Sujana, R.S. Thakur, S.B. Rao, Removal of fluoride from aqueous solution by using alum sludge, J. Colloid Interface Sci., 206 (1998) 94–101.