Gajda Bernadeta, Plackowski Radosław, Skrzypczak Andrzej, Bogacki Mariusz B
Czestochowa University of Technology, Department of Metallurgy and Metal Technology, 42-200 Czestochowa, ul. Armii Krajowej 19, Poland.
Poznań University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, 60-965 Poznań, ul. Berdychowo 4, Poland.
Membranes (Basel). 2020 Aug 27;10(9):201. doi: 10.3390/membranes10090201.
This study investigates copper(II) ion transport through a polymer inclusion membrane (PIM) containing 1-alkyl-1,2,4-triazole (n = 8, 9, 10, 11, 12, 14), -nitrophenyl octyl ether as the plasticizer and cellulose triacetate as the polymer matrix. The feeding phase was a solution of 0.1 mol/dm and an equimolar (0.1 mol/dm) mixture of copper, nickel, and cobalt chlorides with varying concentrations of chloride anions (from 0.5 to 5.0 mol/dm) established with NaCl. The receiving phase was demineralized water. The flow rate of the source and receiving phases through the membrane module was within the range from 0.5 cm/min to 4.5 cm/min. The tests were carried out at temperatures of 20, 30, 40 and 50 °C. Transport of NaCl through the membrane was excluded for the duration of the test. It was noted that the flow rate through the membrane changes depending on the length of the carbon chain in the alkyl substituent from 16.1 μmol/(ms) to 1.59 μmol/(ms) in the following order: . The activation energy was 71.3 ± 3.0 kJ/mol, indicating ion transport through the PIM controlled with a chemical reaction. Results for transport in case of the concurrent separation of copper(II), nickel(II), and cobalt(II) indicate a possibility to separate them in a selective manner.
本研究考察了铜（II）离子通过一种聚合物包容膜（PIM）的传输情况，该膜含有1-烷基-1,2,4-三唑（n = 8、9、10、11、12、14）、邻硝基苯基辛基醚作为增塑剂以及三醋酸纤维素作为聚合物基质。进料相是0.1 mol/dm³的溶液以及由铜、镍和钴的氯化物与不同浓度（0.5至5.0 mol/dm³）的氯离子（用氯化钠配制）组成的等摩尔（0.1 mol/dm³）混合物。接收相是去离子水。源相和接收相通过膜组件的流速在0.5 cm/min至4.5 cm/min范围内。测试在20、30、40和50℃的温度下进行。在测试期间排除了氯化钠通过膜的传输。注意到通过膜的流速根据烷基取代基中碳链的长度而变化，顺序为从16.1 μmol/(m·s)到1.59 μmol/(m·s)。活化能为71.3±3.0 kJ/mol，表明离子通过PIM的传输受化学反应控制。同时分离铜（II）、镍（II）和钴（II）时的传输结果表明有可能以选择性方式将它们分离。
