镧改性材料对水中磷酸盐去除的研究进展

在各种除磷技术中,吸附法因其成本低、操作简单、设计简单而受到广泛关注;稀土镧由于对磷酸盐具有特异性而被广泛运用于复合吸附剂中,以增强吸附磷酸盐的能力。文中综述了近几年来用于磷酸盐去除的镧改性复合材料吸附剂的研究进展,主要包括镧氧化物/氢氧化物、镧改性铝/铁、镧改性黏土矿物、镧改性碳材料和镧改性其他材料,考虑了镧改性后吸附剂的吸附容量、pH及回收情况等。在进一步的研究中,应考虑镧改性复合材料吸附剂在复杂条件下的稳定性和潜在风险,以及其高效分离和再生的能力。

Research Progress on Phosphate Removal in Water by Lanthanum Modified Materials

Various attempts have been made to develop a cost-effective method of phosphorous removal. Among all kinds of phosphate removal technologies, adsorption is widely accepted due to its low cost, simple operation and design. Lanthanum is widely used in composite adsorbents to enhance phosphate adsorption due to its specific ability to phosphate. In the paper, research progress of lanthanum modified composite adsorbents for phosphate removal is reviewed, including lanthanum oxide/hydroxide, lanthanum modified aluminum/iron, lanthanum modified clay materials, lanthanum modified carbon materials and other lanthanum modified materials. Adsorption capacity, pH value and recovery of lanthanum modified adsorbent are considered. In the future research, stability and potential risk of lanthanum modified composite adsorbents under complex conditions, as well as its efficient separation and regeneration ability should be considered.