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Membrane Water Treatment Volume 10, Number 6, November 2019 , pages 451-460 DOI: https://doi.org/10.12989/mwt.2019.10.6.451 |
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Desalting enhancement for blend polyethersulfone/polyacrylonitrile membranes using nano-zeolite A |
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Eman S. Mansor, Tarek S. Jamil, Heba Abdallah, H.F. Youssef, Ahmed M. Shaban and Eglal R. Souaya
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| Abstract | ||
| Thin film composite membranes incorporated with nano-sized hydrophilic zeolite -A were successfully prepared via interfacial polymerization (IP) on porous blend PES/PAN support for water desalination. The thin film nanocomposite membranes were characterized by SEM, contact angle and performance test with 7000 ppm NaCl solution at 7bar. The results showed that the optimum zeolite loading amount was determined to be 0.1wt% with permeate flux 29LMH.NaCl rejection was improved from 69% to 92% compared to the pristine polyamide membrane where the modified PA surface was more selective than that of the pristine PA. In addition, there was no significant change in the permeate flux of the thin film nanocomposite membrane compared with that of the pristine PA in spite of the formation of the dense polyamide layer. The stability of the polyamide layer was investigated for 15 days and the optimized membrane presented the highest durability and stability. | ||
| Key Words | ||
| salting water; permeability; TFNCM; zeolite –A; interfacial polymerization | ||
| Address | ||
| Eman S. Mansor, Tarek S. Jamil and Ahmed M. Shaban: Water pollution Research Department, Environmental Research Division, National Research Centre, 12622, Egypt Heba Abdallah: Chemical Engineering and Pilot Plant Department, Engineering Research Division, National Research Centre, 12622, Egypt H.F. Youssef: Refractories, ceramics and building material department, National Research Centre,33 El-Bohouth St., Dokki, Giza, Egypt Eglal R. Souaya: Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt | ||