Radzymińska-Lenarcik Elżbieta, Pyszka Ilona, Urbaniak Włodzimierz
Institute of Mathematics and Physics, Bydgoszcz University of Science and Technology, 85-796 Bydgoszcz, Poland.
Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, 85-326 Bydgoszcz, Poland.
Polymers (Basel). 2023 Feb 24;15(5):1149. doi: 10.3390/polym15051149.
A polymeric inclusion membrane (PIM) consisting of matrix CTA (cellulose triacetate), ONPPE (o-nitrophenyl pentyl ether) and phosphonium salts (Cyphos 101, Cyphos 104) was used for separation of Cu(II), Zn(II) and Ni(II) ions. Optimum conditions for metal separation were determined, i.e., the optimal concentration of phosphonium salts in the membrane, as well as the optimal concentration of chloride ions in the feeding phase. On the basis of analytical determinations, the values of parameters characterizing transport were calculated. The tested membranes most effectively transported Cu(II) and Zn(II) ions. The highest recovery coefficients (RF) were found for PIMs with Cyphos IL 101. For Cu(II) and Zn(II), they are 92% and 51%, respectively. Ni(II) ions practically remain in the feed phase because they do not form anionic complexes with chloride ions. The obtained results suggest that there is a possibility of using these membranes for separation of Cu(II) over Zn(II) and Ni(II) from acidic chloride solutions. The PIM with Cyphos IL 101 can be used to recover copper and zinc from jewellery waste. The PIMs were characterized by AFM and SEM microscopy. The calculated values of the diffusion coefficient indicate that the boundary stage of the process is the diffusion of the complex salt of the metal ion with the carrier through the membrane.
一种由基质三醋酸纤维素（CTA）、邻硝基苯基戊基醚（ONPPE）和鏻盐（Cyphos 101、Cyphos 104）组成的聚合物包容膜（PIM）用于分离铜（II）、锌（II）和镍（II）离子。确定了金属分离的最佳条件，即膜中鏻盐的最佳浓度以及进料相中氯离子的最佳浓度。基于分析测定，计算了表征传输的参数值。测试的膜最有效地传输了铜（II）和锌（II）离子。对于含有Cyphos IL 101的PIM，发现了最高的回收率（RF）。对于铜（II）和锌（II），它们分别为92%和51%。镍（II）离子实际上留在进料相中，因为它们不与氯离子形成阴离子络合物。所得结果表明，有可能使用这些膜从酸性氯化物溶液中分离铜（II）与锌（II）和镍（II）。含有Cyphos IL 101的PIM可用于从珠宝废料中回收铜和锌。通过原子力显微镜（AFM）和扫描电子显微镜（SEM）对PIM进行了表征。扩散系数的计算值表明，该过程的边界阶段是金属离子与载体的络合盐通过膜的扩散。
