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羟基磷灰石具有特殊的晶体结构,对二价的重金属离子有很强的结合力,是一种可用于环境污染治理的新型功能性材料。它可有效地吸附去除水中的Pb2+,Cd2+,Cu2+,Zn2+,Co2+,Ni2+等重金属离子,但其粉体的结构却限制了它在水环境中的实际应用。随着纳米技术、复合材料技术的发展,在羟基磷灰石的基础上开发出的具有高效吸附性能或分离特性的新型材料在重金属吸附研究中显示了潜在的优势。本文综述了羟基磷灰石及其复合材料对水中重金属去除方面的研究进展,探讨了它对重金属吸附机理,并对羟基磷灰石进一步的研究提出了展望。
Hydroxyapatite has a special crystal structure, strong binding force to divalent heavy metal ions, and is a new type of functional material that can be used for environmental pollution control. It can effectively adsorb and remove heavy metal ions such as Pb2 +, Cd2 +, Cu2 +, Zn2 +, Co2 +, Ni2 + in water, but its powder structure has limited its practical application in water environment. With the development of nanotechnology and composite technology, new materials with high adsorption or separation properties developed on the basis of hydroxyapatite have shown potential advantages in heavy metal adsorption studies. In this paper, the research progress of hydroxyapatite and its composites on the removal of heavy metals in water is reviewed. Its adsorption mechanism on heavy metals is also discussed, and the further research on hydroxyapatite is proposed.