The growing importance of metal separation methods and the shortcomings of conventional solvent extraction techniques, such as high energy consumption, long operation times, and large space requirements, have resulted in more attention toward the demand for applying new technology to improve these defects. Microfluidics can be a proper choice for this purpose owing to their high mass and heat transfer rate, low material consumption and small size. In this study, the solvent extraction of chromium (III) ion in a Polydimethylsiloxane Y-Y microchannel using MDEHPA as the extractant and corn oil as the organic solvent was studied. The surface response method (RSM) was applied to investigate the effect of operating parameters on extraction efficiency and obtain the optimal extraction conditions. Under these conditions, the extraction rate was 84.76%. Also, to accurately evaluate the mass transfer performance, the volumetric mass transfer coefficients (K_La) in the batch and microfluidic extraction in the obtained optimal conditions were calculated. The K_La for the microfluidic extraction system was much larger, indicating better mass transfer performance of the microfluidic devices. In addition, CFD simulations were performed to investigate the channel's internal flow and extraction efficiency. The results showed a suitable agreement compared to the experimental results.

金属分离方法日益重要，传统溶剂萃取技术存在能耗高、操作时间长、空间要求大等缺点，使得人们更加关注应用新技术来改善这些缺陷的需求。微流体因其高质量和传热率、低材料消耗和小尺寸而成为此目的的合适选择。本研究以MDHEPA为萃取剂，玉米油为有机溶剂，研究了聚二甲基硅氧烷YY微通道中铬(III)离子的溶剂萃取。应用表面响应法（RSM）研究了操作参数对提取效率的影响，并获得了最佳提取条件。在这些条件下，提取率为84.76%。_l a) 在分批和微流体萃取中获得的最佳条件进行了计算。微流体萃取系统的 K _L a 大得多，表明微流体装置的传质性能更好。此外，还进行了 CFD 模拟以研究通道的内部流动和提取效率。与实验结果相比，结果显示出合适的一致性。