In this study, five aluminum-based metal-organic frameworks (i.e. Al-BDC, Al-BDC-NH₂, Al-BHTA, Al-PMA and Al-BPDC) were synthesized by changing the organic linker. Among the five Al-MOFs, Al-BDC, which used 1,4-benzenedicarboxylate as a linker, showed the highest phosphorus adsorption capacity (97.50 mg P/g), while Al-PMA, which used 1,2,4,5-benzenetetracarboxylic acid as a linker, exhibited the lowest phosphorous adsorption capacity (42.25 mg P/g). The adsorption capacity was higher than most adsorbents reported in the literature. In addition, Al-PMA and Al-BPDC are more cost-effective for removing low concentrations of phosphorous from water. When the aqueous phosphorus concentration was less than 1.0 mg P/L, and the dosage of the five Al-MOFs was only 0.10 g/L, more than 90% of phosphorus was removed. The Al-MOFs are suitable for phosphorus removal from water over a wide pH range (5.0–9.0). In this pH range, almost no Al was detected in water after phosphorus removal, indicating that the Al-MOFs can remove phosphorus from water without causing secondary pollution. Moreover, in a NaCl (0.01 mol/L) background electrolyte solution, the Al-MOFs showed high phosphorus removal stability. The Al-MOFs have the potential to remove phosphorus from natural water. Furthermore, the mechanism study shows that electrostatic interaction and ligand exchange were defined as the main phosphorus removal pathways using the prepared Al-MOFs. These findings demonstrate that the synthesized Al-MOFs are promising candidates for removal of phosphorus from eutrophic water.

在这项研究中，五个铝基金属有机骨架（即Al-BDC，Al-BDC-NH ₂，通过改变有机连接基合成了Al-BHTA，Al-PMA和Al-BPDC）。在五个Al-MOF中，使用1,4-苯二甲酸酯作为连接基的Al-BDC表现出最高的磷吸附能力（97.50 mg P / g），而使用1,2,4,5的Al-PMA -苯四甲酸作为连接基，表现出最低的磷吸附容量（42.25 mg P / g）。吸附能力高于文献中报道的大多数吸附剂。此外，Al-PMA和Al-BPDC在从水中去除低浓度磷方面更具成本效益。当含水磷浓度小于1.0 mg P / L，并且五种Al-MOF的剂量仅为0.10 g / L时，去除了超过90％的磷。Al-MOFs适用于在很宽的pH范围（5.0-9.0）中从水中去除磷。在这个pH范围内 除磷后，在水中几乎没有检测到Al，这表明Al-MOF可以去除水中的磷而不会造成二次污染。此外，在NaCl（0.01 mol / L）背景电解液中，Al-MOFs显示出高的除磷稳定性。Al-MOF具有去除天然水中磷的潜力。此外，机理研究表明，使用制备的Al-MOF，静电相互作用和配体交换被定义为主要的除磷途径。这些发现表明，合成的Al-MOF是从富营养化水中去除磷的有希望的候选者。Al-MOFs具有很高的除磷稳定性。Al-MOF具有去除天然水中磷的潜力。此外，机理研究表明，使用制备的Al-MOF，静电相互作用和配体交换被定义为主要的除磷途径。这些发现表明，合成的Al-MOF是从富营养化水中去除磷的有希望的候选者。Al-MOFs具有很高的除磷稳定性。Al-MOF具有去除天然水中磷的潜力。此外，机理研究表明，使用制备的Al-MOF，静电相互作用和配体交换被定义为主要的除磷途径。这些发现表明，合成的Al-MOF是从富营养化水中去除磷的有希望的候选者。