Excessive fluoride concentration in potable water can lead to fluorosis of teeth and bones. In the present study, Donnan dialysis (DD) is applied for the removal of fluoride ions from diluted sodium fluoride solutions. A four factor two level (24) full factorial design was used to investigate the influence of different physico-chemical parameters on fluoride removal efficiency (YF) and fluoride flux (JF) through anion exchange membrane. The statistical design determines factors which have the important effects on Donnan dialysis performance and studies all interactions among the considered parameters. The four significant factors were initial fluoride concentration, feed flow rate, temperature and agitation speed. The experimental results and statistical analysis show that the temperature and agitation speed have positive effects on fluoride removal efficiency and the initial fluoride concentration has a negative effect. In the case of fluoride flux, feed flow rate and initial concentration are the main effect and all factors have a positive effect. The interaction between studied parameters was not negligible on two responses. A maximum fluoride removal of 75.52% was obtained under optimum conditions and the highest value of fluoride flux obtained was 2.4 mg/cm2·h. Empirical regression models were also obtained and used to predict the flux and the fluoride removal profiles with satisfactory results.

Fluoride Removal Fluoride Flux Donnan Dialysis Anion Exchange Membrane Factorial Design

Fawell J, Bailey K, Chilton J, Dahi E, Fewtrell L, Magara Y, World Health Organization, IWA Publishing London (2006)
World Health Organization, Geneva, 375 (2006)
Ramdani A, Taleb S, Ben Ghalem A, Ghaffour N, Desalination, 250, 408 (2011)
Sarkar M, Banerjee A, Pramanick PP, Sarkar AR, J. Colloid Interface Sci., 302(2), 432 (2006)
Srimurali A, Pragathi A, Karthikeyan J, Environ. Poll., 99, 285 (1998)
Hekmatzadeh AA, Jashni AK, Talebbeydokhti N, Klove B, Desalination, 326, 125 (2013)
Desmond FL, Williams DH, Water Res., 18, 1411 (1984)
Mameri N, Lounici H, Belhocine D, Grib H, Piron DL, Yahiat Y, Sep. Purif. Technol., 24(1-2), 113 (2001)
Zuo QH, Chen XM, Li W, Chen GH, J. Hazard. Mater., 159(2-3), 452 (2008)
Tong Y, He Z, J. Hazard. Mater., 262, 614 (2013)
Sehn P, Desalination, 223(1-3), 73 (2008)
Cohen D, Conard HM, Desalination, 117, 408 (1998)
Mnif A, Ben Sik Ali M, Hamrouni B, Ionics, 16, 245 (2009)
Tahaikt M, El Habbania R, Haddou AA, Acharya I, Amora Z, Takya M, Alamil A, Boughriba A, Hafsil A, Elmidaoui A, Desalination, 212(1-3), 46 (2007)
Hu K, Dickson JM, J. Membr. Sci., 297, 529 (2006)
Kabay N, Arar O, Samatya S, Yuksel U, Yuksel M, J. Hazard. Mater., 153(1-2), 107 (2008)
Amor Z, Bariou B, Mameri N, Taky M, Nicolas S, Elmidaoui A, Desalination, 133(3), 215 (2001)
Durmaz F, Kara H, Cengeloglu Y, Ersoz M, Desalination, 177(1-3), 51 (2005)
Hichour M, Persin F, Sandeaux J, Gavach C, Sep. Purif. Technol., 18(1), 1 (2000)
Tor A, Buyukerkek T, Cengeloglu Y, Ersoz M, Desalination, 171, 233 (2004)
Tanaka Y, Ion exchange membranes-Fundamentals and applications, Membrane Science and Technology Series, Elsevier, 495 (2007)
Dieye A, Larchet C, Auclair B, Mar-Diop C, Europ. Polym. J., 34(1), 67 (1998)
Hichour M, Persin F, Molenat J, Sandeaux J, Gavach C, Desalination, 122(1), 53 (1999)
Kir E, Alkan E, Desalination, 197(1-3), 217 (2006)
Lee IH, Kuan YC, Chern JM, J. Hazard. Mater., 138(3), 549 (2006)
Balbasi M, Mater. Res. Bull., 48(8), 2908 (2013)
Ertas R, Ozturk N, Desal. Water Treat., 51, 2909 (2013)
Goupy J, Greighton L, Introduction aux plans d’experiences, 3rd Ed., Dunod, Paris (2006)
Montgomery DC, Design and analysis of experiments, 5th Ed.,Wiley, New York (2001)
Antony J, Design of experiments for engineers and scientists, Butterworth-Heinemann, New York (2003)
Srinivasan A, Viraraghavan T, J. Hazard. Mater., 175(1-3), 695 (2010)