In this study, lanthanum metal-organic frameworks (La-MOFs) with different microstructures were synthesized by changing the synthesis temperature (100, 130, 160, and 190 °C) and used for efficient phosphorus recovery from water. The results of adsorption isotherm measurements showed that the process of phosphorus recovery using the synthesized La-MOFs is more consistent with the Langmuir model. In addition, the kinetic behavior of this process is better described by the pseudo-second-order kinetic model. The synthesized La-MOFs can achieve efficient phosphorus recovery in water over an initial pH range of 3.0–11.0. The common ions found in water hardly affect the phosphorus recovery efficiency of the La-MOFs. Importantly, these materials have the potential to recover phosphorus from real water bodies. The synthesized La-MOFs exhibited excellent regeneration performance. The phosphorus recovery process is mainly governed by complexation between the La-MOFs and phosphorus species, as well as ligand exchange mechanisms. This study provides new technologies and methods for phosphorus recovery and reuse, including the treatment of water bodies that are threatened by eutrophication.

在这项研究中，通过改变合成温度（100、130、160和190℃）合成了具有不同微观结构的镧金属有机框架（La-MOF），并用于从水中高效回收磷。吸附等温线测量结果表明，利用合成的La-MOFs回收磷的过程更符合Langmuir模型。此外，伪二级动力学模型可以更好地描述该过程的动力学行为。合成的La-MOFs可以在3.0-11.0的初始pH范围内实现水中磷的有效回收。水中常见的离子几乎不影响La-MOFs的磷回收效率。重要的是，这些材料有潜力从真实水体中回收磷。合成的La-MOFs表现出优异的再生性能。磷回收过程主要受La-MOFs和磷物质之间的络合以及配体交换机制的控制。这项研究提供了磷回收和再利用的新技术和方法，包括受富营养化威胁的水体的处理。