This study investigated imidazolium ionic liquids’ capability under ultrasonic irradiation conditions for dysprosium extraction from the aqueous nitrate solution. The main objective was to evaluate the feasibility of ultrasound-assisted extraction techniques compared to conventional solvent extraction. The extraction process was investigated as a function of the ionic liquids and organic extractant, organic/aqueous phase volume ratio, the acidity of the aqueous phase, contact time, ion concentration, temperature, and stripping condition. The outcomes demonstrated that the combination of C₆MIM.PF₆ and TOPO extractant is more extractable than the mixture of C₆MIM.NTf₂ and TOPO. The effects of ultrasonic irradiation on the Dy(III) ions show that ion transfer occurs with high extraction efficiency. The variation of logD versus temperature demonstrated that temperature had little impact on the extraction procedure. The recovery of dysprosium ions from the organic phase using 0.5 M nitric acid is achieved in stripping studies. The results showed that the extraction and recovery under ultrasonic irradiation and with the presence of ionic liquids proposed a simple and environmentally friendly approach for the purification and separation of rare-earth ions from the permanent magnet wastewater.

本研究调查了咪唑鎓离子液体在超声辐照条件下从硝酸水溶液中提取镝的能力。主要目的是评估超声辅助提取技术与传统溶剂提取技术相比的可行性。萃取过程作为离子液体和有机萃取剂、有机相/水相体积比、水相酸度、接触时间、离子浓度、温度和汽提条件的函数进行研究。结果表明，C ₆ MIM.PF ₆和TOPO萃取剂的组合比C ₆ MIM.NTf ₂的混合物更易萃取和TOPO。超声辐照对 Dy(III) 离子的影响表明离子转移发生并具有高提取效率。logD 与温度的变化表明温度对提取过程的影响很小。在汽提研究中实现了使用 0.5 M 硝酸从有机相中回收镝离子。结果表明，超声辐照和离子液体存在下的萃取和回收为从永磁废水中纯化和分离稀土离子提供了一种简单且环保的方法。