海藻酸钠复合凝胶球的制备及其对水中氟的吸附性能研究

Preparation of Sodium Alginate Composite Gel Beads and Study on Adsorption of Fluoride in Water

以海藻酸钠和膨润土为原料,成功制备了海藻酸钠复合凝胶球作为吸附剂。通过静态试验研究了该吸附剂对水中氟离子的吸附性能。实验结果表明:pH值为6.0~9.0、初始浓度为10 mg/L、吸附时间140~180 min、吸附剂投加量为7 g/L时,脱除率可达90%以上,残余F-含量小于1 mg/L,达到国家饮用水标准。

In this paper,sodium alginate and bentonite were used as the base material,sodium alginate composite gel beads were prepared.The adsorption effect of gel beads on Fluoride in water was studied by static adsorption.The optimum adsorption conditions as follows:pH value 6.0~9.0,initial concentration of 10 mg/L,adsorption time was 140~180 min,adsorbent dosage 7 g/L,the removal rates can reach more than 90%.The fluoride content in the solution is less than 1 mg/L,meet the national drinking water standard.