Dual ionic liquid-based crosslinked chitosan for fine-tuning of antifouling, water throughput, and denitrification performance of polysulfone membrane
| Autor: | Stephan Schmidt, Fatma H.A. Mustafa, Christoph Janiak, Reda F.M. Elshaarawy, Ahmed E. Borai, Reda M. Abd El-Aal |
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| Rok vydání: | 2021 |
| Předmět: |
Polymers
Ionic Liquids Ultrafiltration 02 engineering and technology Biochemistry Contact angle Biofouling 03 medical and health sciences chemistry.chemical_compound Structural Biology Zeta potential Sulfones Polysulfone Porosity Molecular Biology 030304 developmental biology Chitosan 0303 health sciences Membranes Fouling Water Membranes Artificial Serum Albumin Bovine General Medicine 021001 nanoscience & nanotechnology Membrane chemistry Chemical engineering Ionic liquid Denitrification 0210 nano-technology Hydrophobic and Hydrophilic Interactions |
| Zdroj: | International Journal of Biological Macromolecules. 170:572-582 |
| ISSN: | 0141-8130 |
| DOI: | 10.1016/j.ijbiomac.2020.12.186 |
| Popis: | This study aimed to design a facile and efficient protocol for upgrading the performance indices of polysulfone (PS) membrane (porosity, hydrophilicity, pure water flux (PWF), surface charge, and fouling-resistance) by blending with newly synthesized poly(ionic) crosslinked chitosan Schiff bases (PICCSBs). The PS-PICCSBs mixed-matrix membranes (MMMs) have successfully fabricated and characterized based on spectral and microscopic analyses, porosity, zeta potential, water contact angle, and water uptake (wettability) measurements. The PWF, fouling-resistance against bovine serum albumin (BSA), as well as ion exchange capacity (IEC) against nitrate anion were studied. The wettability, hydrophilicity and overall porosity of new MMMs have greatly increased, in comparison to a pristine PS membrane (M0). In addition, blending of PS with PICCSBs resulted in switching its surface from negatively- to positively-charged. The PWF of MMMs has increased to reach a maximum value of 238.6 L/m2 h for MMM1 (9.3-fold higher than M0). Meanwhile, BSA rejection has declined from 96.62% for M0 to 41.9% for MMM1. The fouling parameters results of MMMs indicated their low fouling propensity. The IEC of nitrate anions revealed that the nitrate uptake by MMM1 is higher than that for M0 and MMM2 by 34% and 14%, respectively. |
| Databáze: | OpenAIRE |
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