Nanocellulose as Modifier for Hollow Fiber Ultrafiltration PSF Membranes
| Autor: | S. D. Bazhenov, Vladimir A. Vinokurov, V. P. Vasilevsky, Alexey Volkov, T. S. Anokhina, Ilya L. Borisov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Mechanical Engineering Ultrafiltration 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Nanocellulose chemistry.chemical_compound Membrane Chemical engineering chemistry Mechanics of Materials Hollow fiber membrane General Materials Science Water treatment Polysulfone Fiber 0210 nano-technology |
| Zdroj: | Key Engineering Materials. 816:238-243 |
| ISSN: | 1662-9795 |
| Popis: | In the present work, a study was conducted for the first time on the modification of hollow fiber UF PSF membranes by cellulose nanofibrils. Two approaches to membrane modification were analyzed: 1) introduction of CNF into the molding solution; 2) additions of CNF to the internal coagulant. Analysis of the transport properties of the investigated membranes showed that the first approach allows increasing the porosity of hollow fiber PSF membranes, due to which the permeability increases from 82 to 287 l / m2 h bar compared to the original membranes. Rejection of dye Blue Dextran (MM = 69 kg / mole) is reduced by 20%. The addition of CNF to the outside coagulant led to the formation of not only the inside selective layer, but also the outer one, while the permeability increases 1.5 times, and the rejection of the dye also increases from 96 to 99%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|