Thin-film composite nanofiltration membranes with high flux and dye rejection fabricated from disulfonated diamine monomer
| Autor: | Neşe Tüfekci, Serkan Unal, Turker Turken, Cuneyt Erdinc Tas, Ismail Koyuncu, Türkan Ormancı-Acar, E. Billur Sevinis Ozbulut, Derya Y. Imer, Başak Keskin, Yusuf Z. Menceloğlu |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Ultrafiltration Filtration and Separation 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Interfacial polymerization 0104 chemical sciences Contact angle chemistry.chemical_compound Membrane chemistry Chemical engineering Thin-film composite membrane Zeta potential General Materials Science Polysulfone Nanofiltration Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Journal of Membrane Science. 608:118172 |
| ISSN: | 0376-7388 |
| DOI: | 10.1016/j.memsci.2020.118172 |
| Popis: | Novel nanofiltration (NF) membranes with improved flux, dye rejection, high pH and temperature resistance were developed using a disulfonated diamine co-monomer, disodium-3-3′-disulfone-4-4′-dichlorodiphenylsulfone (S-DADPS). Thin film composite (TFC) NF membranes were fabricated on a porous polysulfone-based ultrafiltration support layer via the interfacial polymerization between trimesoyl chloride (TMC) in the organic phase and S-DADPS/piperazine (PIP) mixture in the aqueous phase. The effect of S-DADPS content was investigated on the structure and properties of fabricated TFC-NF membranes by varying the ratio between S-DADPS and PIP from 0/100 to 100/0 (w/w). The chemical structure, surface properties and the morphology of TFC-NF membranes were characterized by Fourier Transform Infrared (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM), optical profilometry, contact angle, and zeta potential measurements. Salt and dye rejection behaviors of fabricated TFC-NF membranes were evaluated using 2000 ppm MgSO4 and NaCl solutions and 100 ppm Setazol Red and Reactive Orange 16 dyes, respectively. Dyes were filtrated in acidic, neutral and alkaline conditions for pH resistance tests. The temperature resistance of membranes was evaluated using pure water and dye solutions at 15 °C, 25 °C, and 40 °C. Among all TFC-NF membranes fabricated by varying the S-DADPS/PIP ratio, the membrane with an 80/20 ratio of S-DADPS/PIP resulted in superior properties such as increased water flux without considerable salt and dye rejection loss compared to the neat TFC-NF membrane without S-DADPS. In addition, the variation of S-DADPS/PIP ratio was demonstrated as a powerful tool to tune the balance of flux, separation and rejection performance of NF membranes for custom purification purposes. |
| Databáze: | OpenAIRE |
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