El-Oued is known for some diseases caused by fluoride concentration in drinkable water. To reduce it, a sample with the biggest content among many sources was chosen. A comparative study between the precipitation with calcium salts [Ca(OH)2, CaCl2, CaSO4] and the coagulation with the following salts [Al2(SO4)2·18H2O, Fe2(SO4)2·H2O, FeSO4] was done. Finely we studied the parameters influencing (the mass, pH, temperature) to choose the best conditions in order to get better reduction yield.
International Letters of Chemistry, Physics and Astronomy (Volume 15)
D. Atia et al., "Defluoridation of Drinkable Water “Comparative Study and Parameter Influent”", International Letters of Chemistry, Physics and Astronomy, Vol. 15, pp. 48-60, 2013