References

1. W.M. Edmunds, P.L. Smedley, Fluoride in Natural Waters, O. Selinus, Ed., Essentials of Medical Geology, Springer, Dordrecht, 2013, pp. 311–336.
2. WHO/UNICEF, Progress on Drinking Water and Sanitation, 2014 Update (WHO, Geneva, 2012).
3. M. Mohapatra, S. Anand, B.K. Mishra, D.E. Giles, P. Singh, Review of fluoride removal from drinking water,
   J. Environ. Manage., 91 (2009) 67–77.
4. A. Elhalil, S. Qourzal, F.Z. Mahjoubi, R. Elmoubarki, M. Farnane, H.Tounsadi, M. Sadiq, M. Abdennouri, N. Barka, Defluoridation of groundwater by calcined Mg/Al layered double hydroxide, Emerging Contam., 2 (2016) 42–48.
5. R. Dhanya, E. Shaji, Fluoride contamination in groundwater resources of Alleppey, Southern India, Geosci. Front., 8 (2017) 117–124.
6. M.M. Emamjomeh, M. Sivakumar, An empirical model for defluoridation by batch monopolar electrocoagulation/flotation (ECF) process, J. Hazard. Mater., 131 (2006) 118–125.
7. P. Senthil Kumar, S. Suganya, S. Srinivas, S. Priyadharshini, M. Karthika, R. Karishma Sri, V. Swetha, Mu. Naushad, E. Lichtfouse, Treatment of fuoride contaminated water. A review, Environ. Chem. Lett., 17 (2019) 1707–1726.
8. S. Water, World Health Organization Guidelines for Drinking- Water Quality [Electronic Resource]: Incorporating First Addendum, World Health Organization, 2006, pp. 375–377.
9. M. Tahaikt, R. El Habbani, A. Ait Haddou, I. Achary, Z. Amor, M. Taky, A. Alami, A. Boughriba, M. Hafsi,
   A. Elmidaoui, Fluoride removal from groundwater by nanofiltration, Desalination, 212 (2007) 46–53.
10. M. Bodzek, K. Konieczny, Removal of fluoride from aquatic environment, Desal. Water Treat., 117 (2018) 118–141.
11. B. Solangi, S. Memon, M.I. Bhanger, An excellent fluoride sorption behavior of modified amberlite resin,
    J. Hazard. Mater., 176 (2010) 186–192.
12. Meenakshi, R.C. Maheshwari, Fluoride in drinking water and its removal, J. Hazard. Mater., 137 (2006) 456–463.
13. S.P. Kamble, P. Dixit, S.S. Rayalu, N.K. Labhsetwar, Defluoridation of drinking water using chemically modified bentonite clay, Desalination, 249 (2009) 687–693.
14. M.A. Menkouchi Sahli, S. Annouarb, M. Tahaikt, M. Mountadar, A. Soufiane, A. Elmidaoui, Fluoride removal for underground brackish water by adsorption on the natural chitosan and by electrodialysis, Desalination, 212 (2007) 37–45.
15. M. Tahaikt, I. Achary, M.A. Menkouchi Sahli, Z. Amor, M. Taky, A. Alami, A. Boughriba, M. Hafsi, A. Elmidaouia, Defluoridation of Moroccan groundwater by electrodialysis: continuous operation, Desalination, 189 (2006) 215–220.
16. M. Tahaikt, A. Ait Haddou, R. El Habbani, Z. Amor, F. Elhannouni, M. Taky, M. Kharif, A. Boughriba, M. Hafsi,
    A. Elmidaoui, Comparison of the performances of three commercial membranes in fluoride removal by nanofiltration. Continuous operations, Desalination, 225 (2008) 209–219.
17. L. Shen, L. Tian, J. Zuo, X. Zhang, S. Sun, Y. Wang, Developing high-performance thin-film composite forward osmosis membranes by various tertiary amine catalysts for desalination, Adv. Composites Hybrid Mater., 2 (2019) 51–69.
18. A. Lhassani, M. Rumeau, D. Benjelloun, M. Pontie, Selective demineralization of water by nanofiltration application to the defluorination of brackish water, Water Res., 35 (2001) 3260–3264.
19. Y. Zhang, J. Guo, G. Han, Y. Bai, Q. Ge, J. Ma, C.H. Lau, L. Shao, Molecularly soldered covalent organic frameworks for ultrafast precision sieving, Sci. Adv., 7 (2021) eabe8706, doi: 10.1126/sciadv.abe8706.
20. H. Hu, F. Ding, H. Ding, J. Liu, M. Xiao, Y. Meng, L. Sun, Sulfonated poly(fluorenyl ether ketone)/Sulfonated
    α-zirconium phosphate nanocomposite membranes for proton exchange membrane fuel cells, Adv. Compos. Hybrid Mater., 3 (2020) 498–507.
21. F. Elazhar, M. Tahaikt, A. Achatei, F. Elmidaoui, M. Taky, F. El Hannouni, I. Laaziz, M. El Amrani, A. Elmidaoui,
    S. Jariri, Economical evaluation of the fluoride removal by nanofiltration, Desalination, 249 (2009) 154–157.
22. A. Mnif, M. Ben Sik Ali, B. Hamrouni, Effect of some physical and chemical parameters on fluoride removal by nanofiltration, Ionics, 16 (2010) 245–253.
23. A.B. Nasr, C. Charcosset, R.B. Amar, K. Walha, Defluoridation of water by nanofiltration, J. Fluorine Chem., 150 (2013) 92–97.
24. S. Chakrabortty, M. Roy, P. Pal, Removal of fluoride from contaminated groundwater by cross flow nanofiltration: transport modeling and economic evaluation, Desalination, 313 (2013) 115–124.
25. M. Pontié, H. Buisson, C.K. Diawara, H. Essis-Tome, Studies of halide ions mass transfer in
    nanofiltration-application to selective defluorination of brackish drinking water, Desalination, 157 (2003) 127–134.
26. M. Khayet, C. Cojocaru, M. Essalhi, Artificial neural network modeling and response surface methodology of desalination by reverse osmosis, J. Membr. Sci., 368 (2011) 202–214.
27. A. Shahsavand, M.P. Chenar, Neural networks modeling of hollow fiber membrane processes, J. Membr. Sci., 297 (2007) 59–73.
28. D. Dolar, K. Košutić, T. Strmecky, Hybrid processes for treatment of landfill leachate: coagulation/UF/NF-RO and adsorption/UF/ NF-RO, Sep. Purif. Technol., 168 (2016) 39–46.
29. P. Pal, S. Chakrabortty, L. Linnanen, A nanofiltration– coagulation integrated system for separation and stabilization of arsenic from groundwater, Sci. Total Environ., 476–477 (2014) 601–610.
30. B. Tansel, N. Dizge, Multi objective performance analysis of nanofiltration, process to loading parameters by response surface approach, Desalination, 272 (2011) 164–169.
31. V. Yadav, J. Ali, M.C. Garg, Biosorption of methylene blue dye from textile industry wastewater onto sugarcane bagasse: response surface modelling, isotherms, kinetic and thermodynamics modelling, J. Hazard. Toxic Radioact. Waste, 25 (2021) 04020067.
32. A. Mohagheghian, N. Besharati-Givi, K. Godini, R. Dewil, M. Shirzad-Siboni, Photocatalytic reduction of Cr(VI) from aqueous solution by visible light/CuO-Kaolin: optimization and modeling of key parameters using central composite design (CCD), Sep. Sci. Technol., 56 (2020) 1253–1271.
33. S. Alka, K. Aghilesh, N. Akhil, R. Shobha, A. Smriti, A. Jahangeer, S. Rajneesh, C.G. Manoj, Response surface methodology and artificial neural network modelling for the performance evaluation of pilot-scale hybrid nanofiltration (NF) and reverse osmosis (RO) membrane system for the treatment of brackish ground water, J. Environ. Manage., 278 (2021) 111497, doi: 10.1016/j.jenvman.2020.111497.
34. S.V. Jadhav, K.V. Marathe, V.K. Rathod, A pilot scale concurrent removal of fluoride, arsenic, sulfate and nitrate by using nanofiltration: competing ion interaction and modelling approach, J. Water Process Eng. 13, (2016) 153–167.
35. Guidelines for Drinking-Water Quality: Fourth Edition Incorporating the First Addendum,
    ISBN 978-92-4-154995-0.
36. Moroccan Official Bulletin, Joint Orders No. 1275-01, 1276-01 and 1277-01 of 17th October 2002 Defining the Quality Norms of Surface Waters, Waters Destined for Irrigation and of Surface Waters Used for the Production of Drinking Water Respectively, Official Bulletin of the Kingdom of Morocco, Moroccan Official Bulletin: Rabat, Morocco, 5062, 2002, pp. 1518–1525.
37. H. Dach, Comparison of Nanofiltration and Reverse Osmosis Processes for a Selective Desalination of Brackish Water Feeds, Engineering Sciences [Physics]. Université d’Angers, 2008. Available at: https://tel.archivesouvertes.fr/tel-00433513
38. S. El-Ghzizel, H. Zeggar, M. Tahaikt, F. Tiyal, A. Elmidaoui, M. Taky, Nanofiltration process combined with electrochemical disinfection for drinking water production: feasibility study and optimization, J. Water Process Eng., 36 (2020) 101225, doi: 10.1016/j.jwpe.2020.101225.
39. J. Guo, H. Bao, Y. Zhang, X. Shen, J.-K. Kim, J. Ma, L. Shao, Unravelling intercalation-regulated nanoconfinement for durably ultrafast sieving graphene oxide membranes, J. Membr. Sci., 619 (2021) 118791, doi:10.1016/j.memsci.2020. 118791.
40. S.I. Bouhadjar, H. Kopp, P. Britsch, S.A. Deowan, J. Hoinkis, J. Bundschuh, Solar powered nanofiltration for drinking water production from fluoride-containing groundwater – a pilot study towards developing a sustainable and low-cost treatment plant, J. Environ. Manage., 231 (2019) 1263–1269.
41. L. Nghiem, A. Schaefer, M. Elimelech, Nanofiltration of hormone mimicking trace organic contaminants, Sep. Sci. Technol., 40 (2005) 2633–2649.
42. J.F. Fernández, B. Jastorff, R. Störmann, S. Stolte, J. Thöming, thinking in terms of
    structure–activity-relationships (T-SAR): a tool to better understand nanofiltration membranes, Membranes, 1 (2011) 162–183.
43. O.T. Mahlangu, B.B. Mamba, Interdependence of contributing factors governing dead-end fouling of nanofiltration membranes, Membranes (Basel), 11 (2021) 47, doi: 10.3390/membranes11010047.
44. Q. Li, M. Elimelech, Natural organic matter fouling and chemical cleaning of nanofiltration membranes, Water Sci. Technol. Water Supply, 4 (2004) 245–251.
45. H. Kelewou, A. Lhassani, M. Merzouki, P. Drogui, B. Sellamuthu, Salts retention by nanofiltration membranes: physicochemical and hydrodynamic approaches and modeling, Desalination, 277 (2011) 106–112.
46. L. Paugam, S. Taha, G. Dorange, P. Jaouen, F. Quéméneur, Mechanism of nitrate ions transfer in nanofiltration depending on pressure, pH, concentration and medium composition March, J. Membr. Sci., 231 (2004) 37–46.
47. J. Touir, S. Kitanou, M. Zait, S. Belhamidi, M. Belfaquir, M. Tahaikt, M. Taky, A. Elmidaoui, The comparison of electrodialysis and nanofiltration in nitrate removal from groundwater, Indonesian J. Sci. Technol., 6 (2021) 17–30.
48. F.G. Donnan, Theory of membrane equilibria and membrane potential in the presence of non-dialyzing electrolytes. A contribution to physical–chemical physiology, J. Membr. Sci., 100 (1995) 45–55.
49. M. Tahaikt, S. El-Ghzizel, N. Essafi, M. Hafsi, M. Taky, A. Elmidaoui. Technical-economic comparison of nanofiltration and reverse osmosis in the reduction of fluoride ions from groundwater: experimental, modeling and cost estimate, Desal. Water Treat., 216 (2021) 83–95.
50. S. Bunani, E. Yorükoglu, G. Sert, Ü. Yüksel, M. Yüksel, N. Kabay, Application of nanofiltration for reuse of municipal wastewater and quality analysis of product water, Desalination, 315 (2013) 33–36.
51. S. Shanmuganathan, S. Vigneswaran, T.V. Nguyen, P. Loganathan, J. Kandasamy, Use of nanofiltration and reverse osmosis in reclaiming micro-filtered biologically treated sewage effluent for irrigation, Desalination, 364 (2015) 119–125.