The emulsion liquid membrane (ELM) process for silver recovery containing synergistic Cyanex 302/Cyanex 272 carriers, palm oil as a diluent, acidic thiourea as a stripping agent, and sorbitan monooleate (Span 80) as a surfactant was attempted. A suitable range of mixed carrier concentration on the facilitated extraction performance of silver was first determined. Response surface methodology (RSM) was applied to optimize and evaluate the effect of mixed carrier concentration, stripping agent concentration, and treat ratio on the stability of the process. The results showed that the system was stable with no breakage or swelling. At the optimum condition of 8.26/12.39 mM Cyanex 302/Cyanex 272, 1.27 M acidic thiourea, and 0.62 treat ratio, the silver extraction performance and recovery were 97% and 54% (4.33 times enrichment), respectively. Further modification of the process and addition of 5% w/v of modifier resulted in 6.57 times enrichment, which accounted for 82% of the silver recovery. Hence, this study shows the capability of silver recovery using a synergistic ELM process and potential to be applied in industrial effluent.

尝试使用含有协同作用的 Cyanex 302/Cyanex 272 载体、棕榈油作为稀释剂、酸性硫脲作为剥离剂和山梨糖醇单油酸酯 (Span 80) 作为表面活性剂的乳液液膜 (ELM) 工艺回收银。首先确定了合适的混合载体浓度范围对银的促进提取性能的影响。应用响应面法 (RSM) 优化和评估混合载体浓度、剥离剂浓度和处理率对工艺稳定性的影响。结果表明，该体系稳定，没有破裂或膨胀。在8.26/12.39 mM Cyanex 302/Cyanex 272、1.27 M酸性硫脲和0.62处理比的最佳条件下，银提取性能和回收率分别为97%和54%（富集4.33倍）。进一步改进工艺并添加 5% w/v 的改性剂导致富集 6.57 倍，占银回收率的 82%。因此，这项研究显示了使用协同 ELM 工艺回收银的能力以及在工业废水中应用的潜力。