| Title: | Water flow decrease of track-etched polyethylene terephthalate membranes |
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| Authors: | ID Ambrož, Ana (Author)
ID Yao, Zhen (Author)
ID Rojas, Christopher (Author)
ID Angelova, Polina (Author)
ID Gölzhäuser, Armin (Author)
ID Petrinić, Irena (Author) |
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| Files: |  1-s2.0-S0376738825006076-main.pdf (5,62 MB)
MD5: 74F25C17445A6AC51869E6A221B09437
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | Track-etched polyethylene terephthalate (TE-PET) membranes, characterized by their well-defined cylindrical pores and narrow pore size distribution, offer advantages in filtration applications but demonstrate a gradual decrease of water flux over time. In this work, we evaluate the performance of track-etched polyethylene terephthalate (TE-PET) membranes as microfilters in low-pressure cross-flow and dead-end filtration systems. Membranes with pore sizes between 0.2 and 2.5 μm and porosities of 0.2–20% were tested at different low pressures (0.02–10 bar). Monitoring water flux over time exhibited a significant reduction. This behaviour is attributed to polymer swelling within the pore walls due to the formation of a sol-gel film. Notably, this swelling is enhanced under dynamic flow conditions, with larger pores exhibiting more rapid and pronounced flux decline. When filtering organic solvents, the flux drop is less pronounced and depends on their viscosity and polarity. Surface characterization by atomic force microscopy further confirmed morphological changes in TE-PET support after water filtration. Additional contributing factors, such as fouling and compaction, are also discussed. |
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| Keywords: | track-etched support, polyethylene terephthalate, water filtration, swelling, sol-gel film, carbon nanomembrane |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 23.05.2025 |
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| Article acceptance date: | 01.06.2025 |
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| Publication date: | 04.06.2025 |
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| Publisher: | Elsevier B.V. |
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| Year of publishing: | 2025 |
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| Number of pages: | 26 str. |
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| Numbering: | [article no. 124294124294 |
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| PID: | 20.500.12556/DKUM-93213  |
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| UDC: | 620.3 |
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| ISSN on article: | 1873-3123 |
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| COBISS.SI-ID: | 238552323 |
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| DOI: | 10.1016/j.memsci.2025.124294 |
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| Copyright: | © 2025 The Authors |
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| Publication date in DKUM: | 13.06.2025 |
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| Views: | 0 |
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| Downloads: | 5 |
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| Metadata: |    |
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| Categories: | Misc.
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