Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes
The study of the electrical conductivity of ion-exchange membranes in equilibrium electrolyte solutions is of great importance for the theory of membrane processes, in particular for practical electrodialysis. The purpose of the work is to determine the electrical conductivity of industrial ion-exch...
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| Format: | Article |
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MDPI AG
2022-02-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/2/243 |
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| author | Oleksandr Petrov Natalia Iwaszczuk Irina Bejanidze Tina Kharebava Volodymyr Pohrebennyk Nato Didmanidze Nunu Nakashidze |
| author_facet | Oleksandr Petrov Natalia Iwaszczuk Irina Bejanidze Tina Kharebava Volodymyr Pohrebennyk Nato Didmanidze Nunu Nakashidze |
| author_sort | Oleksandr Petrov |
| collection | DOAJ |
| description | The study of the electrical conductivity of ion-exchange membranes in equilibrium electrolyte solutions is of great importance for the theory of membrane processes, in particular for practical electrodialysis. The purpose of the work is to determine the electrical conductivity of industrial ion-exchange membranes MK-40 and MA-40, as well as their basis—granules of a bulk layer of industrial ion exchangers KU-2-8 and EDE-10p, by differential and modified contact methods in electrolyte solutions and the development of a new methodology that will give the values that are closest to the true ones; determination of the dependence of electrical membrane conductivity depending on the type of counterion and concentration equilibrium solution and granules of a bulk layer of ion exchangers on the volume fraction of a dry ion exchanger with different degrees of compaction. It is shown that the dependence of the electrical conductivity of diaphragms on the electrolyte concentration, according to theoretical ideas, disappears under compression. It has been experimentally established that the difference method gives lower values of electrical conductivity in the region of low concentrations. The data obtained by the contact method are in good agreement with the results obtained for compressed diaphragms. The membrane conductivity decreases with increasing ion size. |
| first_indexed | 2024-03-09T21:27:38Z |
| format | Article |
| id | doaj.art-827585a577c64d46bbb5316d3e8d89f6 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T21:27:38Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-827585a577c64d46bbb5316d3e8d89f62023-11-23T21:04:09ZengMDPI AGMembranes2077-03752022-02-0112224310.3390/membranes12020243Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic ElectrolytesOleksandr Petrov0Natalia Iwaszczuk1Irina Bejanidze2Tina Kharebava3Volodymyr Pohrebennyk4Nato Didmanidze5Nunu Nakashidze6Faculty of Management, AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, PolandFaculty of Management, AGH University of Science and Technology, Mickiewicza Av. 30, 30-059 Krakow, PolandFaculty of Natural Sciences and Health Care, Department of Chemistry, Batumi Shota Rustaveli State University, Ninoshvili/Rustaveli Str. 35/32, Batumi 6010, GeorgiaFaculty of Natural Sciences and Health Care, Department of Chemistry, Batumi Shota Rustaveli State University, Ninoshvili/Rustaveli Str. 35/32, Batumi 6010, GeorgiaDepartment of Ecological Safety and Nature Protection Activity, V. Chornovil Institute of Sustainable Development, Lviv Polytechnic National University, Bandery Str., 12, 79013 Lviv, UkraineFaculty of Natural Sciences and Health Care, Department of Chemistry, Batumi Shota Rustaveli State University, Ninoshvili/Rustaveli Str. 35/32, Batumi 6010, GeorgiaDepartment of Agroecology and Forestry, Batumi Shota Rustaveli State University, Batumi 6010, GeorgiaThe study of the electrical conductivity of ion-exchange membranes in equilibrium electrolyte solutions is of great importance for the theory of membrane processes, in particular for practical electrodialysis. The purpose of the work is to determine the electrical conductivity of industrial ion-exchange membranes MK-40 and MA-40, as well as their basis—granules of a bulk layer of industrial ion exchangers KU-2-8 and EDE-10p, by differential and modified contact methods in electrolyte solutions and the development of a new methodology that will give the values that are closest to the true ones; determination of the dependence of electrical membrane conductivity depending on the type of counterion and concentration equilibrium solution and granules of a bulk layer of ion exchangers on the volume fraction of a dry ion exchanger with different degrees of compaction. It is shown that the dependence of the electrical conductivity of diaphragms on the electrolyte concentration, according to theoretical ideas, disappears under compression. It has been experimentally established that the difference method gives lower values of electrical conductivity in the region of low concentrations. The data obtained by the contact method are in good agreement with the results obtained for compressed diaphragms. The membrane conductivity decreases with increasing ion size.https://www.mdpi.com/2077-0375/12/2/243electrical conductivityion-exchange membranesion exchange resins |
| spellingShingle | Oleksandr Petrov Natalia Iwaszczuk Irina Bejanidze Tina Kharebava Volodymyr Pohrebennyk Nato Didmanidze Nunu Nakashidze Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes Membranes electrical conductivity ion-exchange membranes ion exchange resins |
| title | Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes |
| title_full | Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes |
| title_fullStr | Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes |
| title_full_unstemmed | Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes |
| title_short | Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes |
| title_sort | study of the electrical conductivity of ion exchange resins and membranes in equilibrium solutions of inorganic electrolytes |
| topic | electrical conductivity ion-exchange membranes ion exchange resins |
| url | https://www.mdpi.com/2077-0375/12/2/243 |
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