References
  -  A. Koohestanian, M. Hosseini, Z. Abbasian, The separation
    method for removing of colloidal particles from raw water,
    American-Eurasian J. Agric. Environ. Sci., 4 (2008) 266–273. 
-  A. Bazer-Bachi, E. Puech-Coste, R. Ben Aim, J. L. Probst,
    Mathematical modeling of optimal coagulant dose in water
    treatment plant, Revue des Sciences de l’Eau, 3 (1990) 377–397. 
-  T.K.F.S. Freitas, V.M. Oliveira, M.T.F. De Souza, H.C.L.
    Geraldino, V.C. Almeida, S.L. Favaro, J.C Garcia, Optimization
    of coagulation-flocculation process for treatment of industrial
    textile wastewater using okra (A. esculentus) mucilage as natural
    coagulant, Ind. Crops Prod., 76 (2015) 538–544. 
-  Y. Wei, X. Dong, A. Ding, D. Xie, Characterization and
    coagulation-flocculation behavior of an inorganic polymer
    coagulant-poly-ferric-zinc-sulfate, J. Taiwan Inst. Chem. Eng.,
    58 (2016) 351–356. 
-  F. Fiessinger, J.L. Bersillon, Prépolymérisation de l’hydroxyde
    d’aluminium pour la coagulation des eaux, Tribune du
    Cebedeau, 399 (1977) 51–68. 
-  M. Jansson-Chariuer, E. Guibal, J. Roussy, B. Delanghe, P. Le
    Cloirec, Vanadium (IV) sorption by chitosan: kinetics and
    equilibrium, Water Res., 30 (1995) 465–475. 
-  E. Assaad, A. Azzouz, D. Nistor, A.V. Ursu, T. Sajin, D.N. Miron,
    F. Monette, P. Niquette, R. Hausler, Metal removal through
    synergic coagulation-flocculation using an optimized chitosan–
    montmorillonite system, Appl. Clay Sci., 37 (2007) 258–274. 
-  K.E. Lee, N. Morad, T. Teng, B.T. Poh, Development,
    characterization and the application of hybrid materials, in
    coagulation/flocculation of wastewater: a review, Chem. Eng. J.,
    203 (2012) 370–386. 
-  E. Ofir, Y. Oren, A. Adin, Comparing pretreatment by iron of
    electro-flocculation and chemical flocculation, Desalination, 204
    (2007) 87–93. 
-  V. Tomar, Dinesh Kumar, A critical study on efficiency of
    different materials for fluoride removal from aqueous media,
    Chem. Cent. J., 7 (2013) 51–66. 
-  B. Akbar, A. Daryabeigi Zand, N. Mehrdadi, A. Karbassi,
    Optimizing coagulation process for low to high turbidity
    waters using aluminum and iron salts, Am. J. Environ. Sci., 6
    (2010) 442–448. 
-  N. Levy, S. Magdassi, Y. Bar-Or, Physico-chemical aspects
    in flocculation of bentonite suspensions by a cyanobacterial
    bioflocculant, Water Res., 26 (1992) 249–254. 
-  A. Syafalni, Rohana, I. Abustan, A.N.M. Ibrahim, Wastewater
    treatment using bentonite, the combinations of bentonitezeolite,
    bentonite-alum, and bentonite-limestone as adsorbent
    and coagulant, Int. J. Environ. Sci., 4 (2013) 379–391. 
-  M. El Miz, H. Akichoh, D. Berraaouan, S. Salhi, A. Tahani,
    Chemical and physical characterization of Moroccan bentonite
    taken from Nador, Am. J. Chem., 7 (2017) 105–112. 
-  Z. Zhongguo, L. Dan, H. Dandan, L. Duo, R. Xiaojing, C.
    Yanjun, L. Zhaokun, Effects of slow-mixing on the coagulation
    performance of polyaluminum chloride, Chin. J. Chem. Eng., 21
    (2013) 318–323. 
-  L. Hecini, S. Achour, Coagulation-flocculation by aluminum
    sulfate of organic phenolic compounds and effect of calcium
    and magnesium salts, J. Water Sci., 27 (2017) 271–280. 
-  J. León-Luque, C.L. Barajas, C.A. Peña-Guzmán, Determination
    of the optimal dosage of aluminum sulfate in the coagulationflocculation
    process using an artificial neural network, Int. J.
    Environ. Sci. Dev., 7 (2016) 346–350. 
-  G. Apostol, R. Kouachi, I. Constantinescu, Optimization of
    coagulation-flocculation process with aluminum sulfate based
    on response surface methodology, U.P.B. Sci. Bull., Series B, 73
    (2011) 77–84. 
-  M. Benaichata, A. Boukerroui, M. Assouli, Coagulation
    flocculation test of djorf torba’s water dam using clay and lime:
    a comparative study, Larhyss J., 28 (2016) 39–53. 
-  Q.H. Hu, F. Qiao, S.Z. Haghseresht, M.A. Wilson, G.Q. Lu,
    Adsorption study for removal of basic red dye using bentonite,
    Ind. Eng. Chem. Res., 45 (2006) 733–738. 
-  B. Healy, Colloid Environmental Technology Company
    Arlington Heights, Illinois. Surface Modified Clay: An
    Innovative Technology for Groundwater Remediation, 2010.
    Available from: http://info.ugwa.org/gwol/pdf/930158293.PDF. 
-  F. Sher, A. Malik, H. Liu, Industrial polymer effluent treatment
    by chemical coagulation and flocculation, J. Environ. Chem.
    Eng., 1 (2013) 684–689. 
-  S. Syafalni, I. Abustan, F. Zakaria, M. Zawawi, R. Abd Rahim,
    Raw water treatment using bentonite-chitosan as a coagulant,
    Water Supply, 12 (2012) 480–488.