In this study, the presence and absence of ionic liquids as a carrier in the SLM system was investigated for the extraction of praseodymium and neodymium ions from the NdFeB magnet-leaching solution. The rate of permeability coefficient in the ion transport process inside the supported liquid membrane was studied by utilizing the variation in the acidity of the source and stripping phases and the role of different carriers in the transport. The highest permeability coefficients were obtained with the synergistic system containing [C₆MIM][NTf₂], TOPO, and TPB extractants. The higher efficiency is related to the particular ionic property in the extraction of rare earth ions compared with TOPO, and TBP extractants diluted in kerosene. The experimental data of the acidity of the source and stripping phases showed that the neutral pH ~ 6 in the feed phase and the average acidity of 1.8 M nitric acid in the stripping phase were suitable for the transport of ions between both phases. The kinetics of ion transport inside the ionic liquid membrane based on logarithmic variations showed that the process of ion transfer inside the membrane follows the first-order kinetics. The investigation of stability with ionic liquids indicated that a more stable system was provided with ionic liquid as a green solvent in the carrier phase.

在这项研究中，研究了SLM系统中是否存在离子液体作为载体，以从NdFeB磁铁浸出溶液中萃取和钕离子。通过利用离子源和汽提相的酸度变化以及不同载流子在迁移过程中的作用，研究了负载型液膜内部离子迁移过程中的渗透系数速率。含有[C ₆ MIM] [NTf ₂ ]的协同系统获得了最高的渗透系数]，TOPO和TPB萃取剂。与TOPO和在煤油中稀释的TBP萃取剂相比，更高的效率与稀土离子萃取中的特定离子性质有关。源和汽提阶段酸度的实验数据表明，进料阶段的中性pH〜6和汽提阶段中1.8 M硝酸的平均酸度均适合于两相之间的离子迁移。基于对数变化的离子液体膜内部离子迁移动力学表明，膜内部离子迁移过程遵循一级动力学。用离子液体的稳定性研究表明，在载体相中以离子液体作为绿色溶剂提供了更稳定的系统。