饮水降氟材料-羟基磷灰石再生方法的研究

Study on the regeneration methods of the synthetic hydroxyapatite as a material for defluoridation of drinking water

以被氟化物饱和的羟基磷灰石为对象 ,比较了NaOH再生法与表面涂层再生法的再生效果 ,并对表面涂层再生法的静、动态再生条件进行了探索。结果表明 ,用表面涂层再生法对饱和的羟基磷灰石进行再生处理 ,其再生效率可达 4 6%～ 64% ,与传统的NaOH再生法相比 ,再生效率提高了 2倍以上。

The regeneration efficiencies of the synthetic hydroxyapatite saturated by fluoride using either sodium hydroxide method or surface coating method are studied and compared. Both static and dynamic conditions for surface coating regeneration method are also tested.The results showed that the regeneration efficiency of the synthetic hydroxyapatite saturated by fluoride treated by surface coating method is 46%-64%, more than two times of that of it treated by the traditional sodium hydroxide regeneration method.