Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt Solutions
In this work, hybrid membranes were fabricated by depositing polyvinyl chloride (PVC) fibers onto PET track-etched membranes (TeMs) using the electrospinning technique. The resulting structures exhibited enhanced hydrophobicity, with contact angles reaching 155°, making them suitable for application...
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MDPI AG
2025-07-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/15/7/202 |
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| author | Arman B. Yeszhanov Aigerim Kh. Shakayeva Maxim V. Zdorovets Daryn B. Borgekov Artem L. Kozlovskiy Pavel V. Kharkin Dmitriy A. Zheltov Marina V. Krasnopyorova Olgun Güven Ilya V. Korolkov |
| author_facet | Arman B. Yeszhanov Aigerim Kh. Shakayeva Maxim V. Zdorovets Daryn B. Borgekov Artem L. Kozlovskiy Pavel V. Kharkin Dmitriy A. Zheltov Marina V. Krasnopyorova Olgun Güven Ilya V. Korolkov |
| author_sort | Arman B. Yeszhanov |
| collection | DOAJ |
| description | In this work, hybrid membranes were fabricated by depositing polyvinyl chloride (PVC) fibers onto PET track-etched membranes (TeMs) using the electrospinning technique. The resulting structures exhibited enhanced hydrophobicity, with contact angles reaching 155°, making them suitable for applications in both water–oil mixture separation and membrane distillation processes involving low-level liquid radioactive waste (LLLRW), saline solutions, and natural water sources. The use of hybrids of TeMs and nanofiber membranes has significantly increased productivity compared to TeMs only, while maintaining a high degree of purification. Permeate obtained after MD of LLLRW and river water was analyzed by conductometry and the atomic emission spectroscopy (for Sr, Cs, Al, Mo, Co, Sb, Ca, Fe, Mg, K, and Na). The activity of radioisotopes (for <sup>124</sup>Sb, <sup>65</sup>Zn, <sup>60</sup>Co, <sup>57</sup>Co, <sup>137</sup>Cs, and <sup>134</sup>Cs) was evaluated by gamma-ray spectroscopy. In most cases, the degree of rejection was between 95 and 100% with a water flux of up to 17.3 kg/m<sup>2</sup>·h. These membranes were also tested in the separation of cetane–water emulsion with productivity up to 47.3 L/m<sup>2</sup>·min at vacuum pressure of 700 mbar and 15.2 L/m<sup>2</sup>·min at vacuum pressure of 900 mbar. |
| format | Article |
| id | doaj-art-b749ed90ecd546ffb209511b9f769a70 |
| institution | DOAJ |
| issn | 2077-0375 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj-art-b749ed90ecd546ffb209511b9f769a702025-08-20T03:07:55ZengMDPI AGMembranes2077-03752025-07-0115720210.3390/membranes15070202Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt SolutionsArman B. Yeszhanov0Aigerim Kh. Shakayeva1Maxim V. Zdorovets2Daryn B. Borgekov3Artem L. Kozlovskiy4Pavel V. Kharkin5Dmitriy A. Zheltov6Marina V. Krasnopyorova7Olgun Güven8Ilya V. Korolkov9The Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanDepartment of Chemistry, Hacettepe University, Beytepe, Ankara 06800, TurkeyThe Institute of Nuclear Physics, Ibragimov str. 1, Almaty 050032, KazakhstanIn this work, hybrid membranes were fabricated by depositing polyvinyl chloride (PVC) fibers onto PET track-etched membranes (TeMs) using the electrospinning technique. The resulting structures exhibited enhanced hydrophobicity, with contact angles reaching 155°, making them suitable for applications in both water–oil mixture separation and membrane distillation processes involving low-level liquid radioactive waste (LLLRW), saline solutions, and natural water sources. The use of hybrids of TeMs and nanofiber membranes has significantly increased productivity compared to TeMs only, while maintaining a high degree of purification. Permeate obtained after MD of LLLRW and river water was analyzed by conductometry and the atomic emission spectroscopy (for Sr, Cs, Al, Mo, Co, Sb, Ca, Fe, Mg, K, and Na). The activity of radioisotopes (for <sup>124</sup>Sb, <sup>65</sup>Zn, <sup>60</sup>Co, <sup>57</sup>Co, <sup>137</sup>Cs, and <sup>134</sup>Cs) was evaluated by gamma-ray spectroscopy. In most cases, the degree of rejection was between 95 and 100% with a water flux of up to 17.3 kg/m<sup>2</sup>·h. These membranes were also tested in the separation of cetane–water emulsion with productivity up to 47.3 L/m<sup>2</sup>·min at vacuum pressure of 700 mbar and 15.2 L/m<sup>2</sup>·min at vacuum pressure of 900 mbar.https://www.mdpi.com/2077-0375/15/7/202track-etched membranesnanofibershybrid membraneswater–oil emulsions separationmembrane distillationdesalination |
| spellingShingle | Arman B. Yeszhanov Aigerim Kh. Shakayeva Maxim V. Zdorovets Daryn B. Borgekov Artem L. Kozlovskiy Pavel V. Kharkin Dmitriy A. Zheltov Marina V. Krasnopyorova Olgun Güven Ilya V. Korolkov Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt Solutions Membranes track-etched membranes nanofibers hybrid membranes water–oil emulsions separation membrane distillation desalination |
| title | Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt Solutions |
| title_full | Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt Solutions |
| title_fullStr | Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt Solutions |
| title_full_unstemmed | Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt Solutions |
| title_short | Hybrid Membranes Based on Track-Etched Membranes and Nanofiber Layer for Water–Oil Separation and Membrane Distillation of Low-Level Liquid Radioactive Wastes and Salt Solutions |
| title_sort | hybrid membranes based on track etched membranes and nanofiber layer for water oil separation and membrane distillation of low level liquid radioactive wastes and salt solutions |
| topic | track-etched membranes nanofibers hybrid membranes water–oil emulsions separation membrane distillation desalination |
| url | https://www.mdpi.com/2077-0375/15/7/202 |
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