Copper ions are prevalent in the natural environment and possess toxicity as heavy metal ions. The removal of Cu²⁺ from aqueous solutions can be achieved through adsorption, which is considered a straightforward method. In this study, we employed a facile approach to synthesize pig-bone hydroxyapatite material (pHAP), and the synthesized materials were subjected to characterization using XRD, SEM, FTIR, and BET techniques. The results showed that pHAP has a pure HAP structure, and the surface of HAP has a certain porosity, which provides good conditions for the adsorption of copper ions. Batch adsorption equilibrium experiments were conducted to investigate the various influencing factors, adsorption kinetics, and isotherms. The findings revealed that the optimal adsorption condition of Cu²⁺ (50 mg/L) on pHAP was pH 7, 318.15 K, the maximum adsorption capacity was 50.25 mg/g, and the adsorption capacity was superior to some adsorbents of the same type. Moreover, it can retain 74.15% of its reusability after being reused 5 times. The adsorption mechanism primarily involves monolayer adsorption through chemical processes, particularly ion exchange, coprecipitation, and complexation reactions. Therefore, pHAP has industrial application potential in the field of copper ion adsorption.

铜离子广泛存在于自然环境中，具有与重金属离子一样的毒性。从水溶液中去除Cu ²⁺可以通过吸附来实现，这被认为是一种简单的方法。在这项研究中，我们采用了一种简便的方法来合成猪骨羟基磷灰石材料（pHAP），并使用 XRD、SEM、FTIR 和 BET 技术对合成材料进行了表征。结果表明，pHAP具有纯HAP结构，且HAP表面具有一定的孔隙率，为铜离子的吸附提供了良好的条件。进行间歇吸附平衡实验以研究各种影响因素、吸附动力学和等温线。结果表明，pHAP对Cu ²⁺ (50 mg/L)的最佳吸附条件为pH 7、318.15 K，最大吸附容量为50.25 mg/g，吸附容量优于部分同类型吸附剂。 。而且，重复使用5次后仍能保持74.15%的可重复使用性。吸附机理主要涉及通过化学过程的单层吸附，特别是离子交换、共沉淀和络合反应。因此，pHAP在铜离子吸附领域具有工业应用潜力。