Radzyminska-Lenarcik Elzbieta, Pyszka Ilona, Ulewicz Malgorzata
Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, PL 85-326 Bydgoszcz, Poland.
Faculty of Civil Engineering, Czestochowa University of Technology, Dabrowskiego 69 Street, PL 42-201 Czestochowa, Poland.
Membranes (Basel). 2020 Apr 30;10(5):88. doi: 10.3390/membranes10050088.
Polymer inclusion membranes (PIMs) doped with ethylenodiamino-bis-acetylacetone as fixed carrier was applied for the investigation of the facilitated transport of Zn(II), Cr(III), and Ni(II) ions from an aqueous nitrate feed phase (c = 0.001 mol/dm). The optimal membrane composition (amount of carrier and -NPPE-plasticizer) was determined. For the optimal polymer inclusion membranes doped with ethylenodiamino-bis-acetylacetone, the following patterns of transport selectivity were found: Zn(II) > Cr(III) > Ni(II). The initial flux of Zn(II), Cr(III), and Ni(II) ions was 6.37 µmol/m∙s, 5.53 µmol/m∙s, and 0.40 µmol/m∙s, respectively. The selectivity coefficients equal to 1.2 and 15.9 were found for Zn(II)/Cr(III) and Zn(II)/Ni(II), respectively. After 24-h transport, the recovery factor of Zn(II), Cr(III), and Ni(II) were 90%, 65%, and 6%, respectively. The polymer inclusion membranes doped with ethylenodiamino-bis-acetylacetone were characterized by scanning electron microscopy and non-contact atomic force microscopy. The influence of membrane morphology on transport process was discussed.
以乙二胺双乙酰丙酮为固定载体的聚合物包容膜（PIMs）用于研究硝酸盐水相进料相（c = 0.001 mol/dm）中Zn(II)、Cr(III)和Ni(II)离子的促进传输。确定了最佳膜组成（载体和-NPPE增塑剂的用量）。对于掺杂乙二胺双乙酰丙酮的最佳聚合物包容膜，发现了以下传输选择性模式：Zn(II) > Cr(III) > Ni(II)。Zn(II)、Cr(III)和Ni(II)离子的初始通量分别为6.37 µmol/m∙s、5.53 µmol/m∙s和0.40 µmol/m∙s。Zn(II)/Cr(III)和Zn(II)/Ni(II)的选择性系数分别为1.2和15.9。经过24小时的传输后，Zn(II)、Cr(III)和Ni(II)的回收率分别为90%、65%和6%。通过扫描电子显微镜和非接触原子力显微镜对掺杂乙二胺双乙酰丙酮的聚合物包容膜进行了表征。讨论了膜形态对传输过程的影响。
