دورية أكاديمية
Selective Separation of Singly Charged Chloride and Dihydrogen Phosphate Anions by Electrobaromembrane Method with Nanoporous Membranes
| العنوان: | Selective Separation of Singly Charged Chloride and Dihydrogen Phosphate Anions by Electrobaromembrane Method with Nanoporous Membranes |
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| المؤلفون: | Dmitrii Butylskii, Vasiliy Troitskiy, Daria Chuprynina, Ivan Kharchenko, Ilya Ryzhkov, Pavel Apel, Natalia Pismenskaya, Victor Nikonenko |
| المصدر: | Membranes, Vol 13, Iss 5, p 455 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Chemical technology LCC:Chemical engineering |
| مصطلحات موضوعية: | ion separation, highly selective separation, phosphate, electrobaromembrane separation, countercurrent electromigration, nanoporous membranes, Chemical technology, TP1-1185, Chemical engineering, TP155-156 |
| الوصف: | The entrance of even a small amount of phosphorus compounds into natural waters leads to global problems that require the use of modern purification technologies. This paper presents the results of testing a hybrid electrobaromembrane (EBM) method for the selective separation of Cl− (always present in phosphorus-containing waters) and H2PO4− anions. Separated ions of the same charge sign move in an electric field through the pores of a nanoporous membrane to the corresponding electrode, while a commensurate counter-convective flow in the pores is created by a pressure drop across the membrane. It has been shown that EBM technology provides high fluxes of ions being separated across the membrane as well as a high selectivity coefficient compared to other membrane methods. During the processing of solution containing 0.05 M NaCl and 0.05 M NaH2PO4, the flux of phosphates through a track-etched membrane can reach 0.29 mol/(m2×h). Another possibility for separation is the EBM extraction of chlorides from the solution. Its flux can reach 0.40 mol/(m2×h) through the track-etched membrane and 0.33 mol/(m2×h) through a porous aluminum membrane. The separation efficiency can be very high by using both the porous anodic alumina membrane with positive fixed charges and the track-etched membrane with negative fixed charges due to the possibility of directing the fluxes of separated ions in opposite sides. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2077-0375 |
| Relation: | https://www.mdpi.com/2077-0375/13/5/455; https://doaj.org/toc/2077-0375 |
| DOI: | 10.3390/membranes13050455 |
| URL الوصول: | https://doaj.org/article/a368bd877a8a46349ed05fd063655dae |
| رقم الأكسشن: | edsdoj.368bd877a8a46349ed05fd063655dae |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20770375 |
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| DOI: | 10.3390/membranes13050455 |