Loading...
Please wait, while we are loading the content...
Similar Documents
Modification of PET Ion-Track Membranes by Silica Nanoparticles for Direct Contact Membrane Distillation of Salt Solutions
| Content Provider | MDPI |
|---|---|
| Author | Olgun, Güven Korolkov, Ilya Kuandykova, Azhar Yeszhanov, Arman Gorin, Yevgeniy Zdorovets, Maxim |
| Copyright Year | 2020 |
| Description | The paper describes desalination by membrane distillation (MD) using ion-track membranes. Poly(ethylene terephthalate) (PET) ion-track membranes were hydrophobized by the immobilization of hydrophobic vinyl-silica nanoparticles (Si NPs). Si NPs were synthesized by the sol-gel method, and the addition of the surfactant led to the formation of NPs with average size of 40 nm. The thermal initiator fixed to the surface of membranes allowed attachment of triethoxyvinyl silane Si NPs at the membrane surface. To further increase hydrophobicity, ethoxy groups were fluorinated. The morphology and chemical structure of prepared membranes were characterized by SEM, FTIR, XPS spectroscopy, and a gas permeability test. Hydrophobic properties were evaluated by contact angle (CA) and liquid entry pressure (LEP) measurements. Membranes with CA 125–143° were tested in direct contact membrane distillation (DCMD) of 30 g/L saline solution. Membranes showed water fluxes from 2.2 to 15.4 kg/(m2·h) with salt rejection values of 93–99%. |
| Starting Page | 322 |
| e-ISSN | 20770375 |
| DOI | 10.3390/membranes10110322 |
| Journal | Membranes |
| Issue Number | 11 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-10-30 |
| Access Restriction | Open |
| Subject Keyword | Membranes Environmental Engineering Environmental Sciences Desalination Hydrophobic Modification Track-etched Membranes Membrane Distillation Silane Silica Nanoparticles |
| Content Type | Text |
| Resource Type | Article |
