In this study, a selective separation of tungsten W (VI) from a mixed salt solution was done through a liquid-membrane technology. The transport of W (VI) across the supported liquid membrane was also applied on real sample. Tertiary amine (Tri-n-dodecylamine) was used as an organic carrier and a supported liquid membrane of polypropylene separator (celgard 2400) was used in this experimental work. The selective separation of W (VI) was optimized by various parameters i.e., concentration of metal in feed, concentartion of stripping agent, type of stripping reagents, carrier concentration and pH effect. The extraction of W(VI) was maximized by the concentration of carrier up to 0.2 mol/dm³ diluted in n-hexane. The optimum concentration of sodium hydroxide was 0.2 mol/dm³ in the strip phase. The transport of tungsten increases by the increase of the pH of feed solution to basic from acidic up to the pH 8. At pH 8 in the feed phase, tri-n-dodecylamine efficiently extracted W (VI) from feed through anion exchange mechanism. The time duration for the transport of tungsten was 6 h at room temperature. The optimized reaction of W(VI) for the selective separation was applied on the scheelite ore with 93% recoved. The single membrane was used in all experiments, which confirmed the durability and stability of polypropylene membrane.

在这项研究中，通过液膜技术从混合盐溶液中选择性分离了钨W（VI）。W（VI）在支持液膜上的传输也应用于真实样品。叔胺（三- Ñ月桂胺）中的溶液用作有机载体和在该试验工作中使用的聚丙烯制隔板（Celgard公司2400）的支撑液膜。W（VI）的选择性分离通过各种参数进行优化，例如进料中金属的浓度，汽提剂的浓度，汽提剂的类型，载体浓度和pH效果。W（VI）的萃取通过在n中稀释至0.2 mol / dm ³的载体浓度而最大化正己烷。汽提相中的氢氧化钠的最佳浓度为0.2mol / dm ³。钨的输送通过将进料溶液的pH从酸性升高到碱性而提高到pH 8而增加。在进料阶段的pH为8时，三正十二烷基胺通过阴离子交换机制有效地从进料中提取了W（VI）。在室温下，钨的运输时间为6小时。W（VI）选择性分离的优化反应应用于白钨矿，回收率达93％。在所有实验中均使用了单个膜，这证实了聚丙烯膜的耐用性和稳定性。