Study on preparation and fluoride removal performance of hydroxyapatite
羟基磷灰石的制备及除氟性能研究

Hydroxyapatite was prepared with different materials by chemical precipitation method and their adsorption property and mechanism of F- ion were studied. The results of static adsorption experiment showed that hydroxyapatite had well adsorption capacity of F- ion. The equilibrium time of adsorption was about 3 hours. The equilibrium adsorption capacity was increased with the increase of concentration of F- ion and both of them had no limit. The type of adsorption isotherm is Freundlich adsorption.