摘要
我国高氟水分布广泛,危害严重,饮用水除氟是一项亟待解决的任务,寻求除氟效率高、经济实用的吸附材料具有重大意义。研究制备了Mg-Fe-Ce复合金属氧化物吸附材料,考察评价了该吸附剂的除氟吸附速率和吸附等温线,分析了p H值和共存阴离子对除氟吸附性能的影响。结果表明,Mg-Fe-Ce复合金属氧化物最佳适用p H值范围为偏酸性,PO43-和F-存在竞争吸附,但在中性p H值和水中常见阴离子共存条件下,仍表现了较好的除氟吸附性能,有利于其在实际高氟地下水处理中的应用。
Fluoride removal from drinking water has become an urgent task in China, owing to the wide distribution of high concentration fluoride groundwater which could do serious harm to human health. So it is of great significance to develop a novel fluoride adsorbent with high fluoride removal performance. In this study, Mg-Fe-Ce complex metal oxide was prepared as fluoride adsorbent. Batch adsorption of fluoride onto the adsorbent was studied, including fluoride adsorption rates, adsorption isotherms, the effects of p H and co-existing ions. The results showed that the optimal adsorption p H range of Mg-Fe-Ce complex metal hydroxide was acidic, and competitive adsorption existed between PO43-and F-. However, it still showed high fluoride adsorption performance at neutral p H and other common anions in drinking water coexisted, which was conducive to its practical applications in high fluoride groundwater.
出处
《中国水利》
2016年第1期51-54,共4页
China Water Resources
基金
中国水利水电科学研究院重点科研专项(节集1347)
