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用于从水溶液中分离有色金属离子的新型聚合物包容膜

New Polymer Inclusion Membrane in the Separation of Nonferrous Metal Ion from Aqueous Solutions.

作者信息

Pyszka Ilona, Radzyminska-Lenarcik Elzbieta

机构信息

Faculty of Chemical Technology and Engineering, UTP University of Science and Technology, Seminaryjna 3, 85-326 Bydgoszcz, Poland.

出版信息

Membranes (Basel). 2020 Nov 30;10(12):385. doi: 10.3390/membranes10120385.

DOI:10.3390/membranes10120385
PMID:33266152
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7760180/
Abstract

The new polymer inclusion membrane (PIM) with ethylenediamine-bis-acetylacetone (EDAB-acac) matrix was used for the separation of Zn(II) solutions containing non-ferrous metal ions (Co(II), Ni(II) Cu(II), Cd(II)). The effective conditions for carrying out transport studies by PIMs were determined on the basis of solvent extraction studies. The values of the stability constants and partition coefficients of M(II)-EDAB-acac complexes were determined from the extraction studies. The stability constants increase in series Ni(II) < Cu(II) < Co(II) < Cd(II) < Zn(II), and their logarithms are 8.85, 10.61, 12.73, 14.50, and 16.84, respectively. The transport selectivity of the PIMs were: Zn(II) > Cd(II) > Co(II) > Cu(II) > Ni(II). The established stability constants of the complexes also decrease in this order. The values of three parameters: initial flux, selectivity coefficient, and recovery factor of a given metal after 12 h were selected for the comparative analysis of the transport process. The highest values of the initial fluxes were received for Zn(II), Cd(II), and Co(II). They are, depending on the composition of the mixture, in the range 9.87-10.53 µmol/m, 5.26-5.61 µmol/m, and 7.43-7.84 µmol/m for Zn(II), Co(II), and Cd(II), respectively. The highest recovery factors were observed for Zn(II) ions (90-98.0%). For Cd, Co and Cu, the recovery factors are high and are within the range 76-83%, 64-79%, and 51-66%, respectively.

摘要

采用含有乙二胺双乙酰丙酮（EDAB - acac）基质的新型聚合物包容膜（PIM）对含有有色金属离子（Co(II)、Ni(II)、Cu(II)、Cd(II)）的Zn(II)溶液进行分离。基于溶剂萃取研究确定了通过PIM进行传输研究的有效条件。从萃取研究中确定了M(II) - EDAB - acac配合物的稳定常数和分配系数值。稳定常数按Ni(II) < Cu(II) < Co(II) < Cd(II) < Zn(II)的顺序增加，其对数分别为8.85、10.61、12.73、14.50和16.84。PIM的传输选择性为：Zn(II) > Cd(II) > Co(II) > Cu(II) > Ni(II)。所确定的配合物稳定常数也按此顺序降低。选择了三个参数的值用于传输过程的比较分析，这三个参数分别为初始通量、选择性系数以及给定金属在12小时后的回收因子。Zn(II)、Cd(II)和Co(II)的初始通量最高。根据混合物的组成，Zn(II)、Co(II)和Cd(II)的初始通量分别在9.87 - 10.53 μmol/m、5.26 - 5.61 μmol/m和7.43 - 7.84 μmol/m范围内。Zn(II)离子的回收因子最高（90 - 98.0%）。对于Cd、Co和Cu，回收因子较高，分别在76 - 83%、64 - 79%和51 - 66%范围内。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/9b4ce2eeab3d/membranes-10-00385-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/fe7287c4b0f3/membranes-10-00385-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/16b550582a33/membranes-10-00385-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/84041084ce03/membranes-10-00385-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/1707a68bdd62/membranes-10-00385-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/844c783b3df7/membranes-10-00385-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/1861d0d32f38/membranes-10-00385-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/9b4ce2eeab3d/membranes-10-00385-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/fe7287c4b0f3/membranes-10-00385-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/16b550582a33/membranes-10-00385-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/84041084ce03/membranes-10-00385-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/1707a68bdd62/membranes-10-00385-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/844c783b3df7/membranes-10-00385-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/1861d0d32f38/membranes-10-00385-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f635/7760180/9b4ce2eeab3d/membranes-10-00385-g007a.jpg

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