Reverse osmosis (RO) membranes based on cellulose acetate (CA), were prepared using a phase inversion technique. To improve the hydrophilicity, salt rejection and water flux of these membranes, a novel grafting of 2-acrylamido-2-methylpropanesulfonic acid (AMPSA) was added on the top surface of the CA-RO membranes. The grafted CA-RO membranes were characterized by Fourier transform infrared spectroscopy (FTIR), contact angle, and scanning electron microscopy techniques. It was found that the contact angles were 58° and 45° for pristine CA and 15 wt% grafted CA-RO membranes, respectively, which suggest an increase in the membrane surface hydrophilicity after grafting. The morphological studies of the surface of the pristine CA-RO membrane revealed a typical ridge-and-valley morphology and displayed a relatively high surface roughness of 337 nm, and a significant decrease at 15 wt% of grafted CA-RO membrane to 7 nm. The effect of the grafting percentages of AMPSA on the water flux and salt rejection was studied using a cross flow RO unit. The salt rejection and water flux of the grafted CA-RO membrane with 15 wt% were 99.03% and 6 L/m2h, respectively.
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Research Article|
February 24 2016
Grafted cellulose acetate reverse osmosis membrane using 2-acrylamido-2-methylpropanesulfonic acid for water desalination
Ashraf Morsy;
Ashraf Morsy
1Materials Science Department, Institute of Graduate Studies & Research, 163 Horreya Avenue, El-Shatby, Alexandria, Egypt
2Department of Chemistry, Egyptian Petrochemicals Company, Alexandria, Egypt
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Shaker Ebrahim;
1Materials Science Department, Institute of Graduate Studies & Research, 163 Horreya Avenue, El-Shatby, Alexandria, Egypt
E-mail: shaker.ebrahim@alexu.edu.eg
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El-Refaie Kenawy;
El-Refaie Kenawy
3Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
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Tarek Abdel-Fattah;
Tarek Abdel-Fattah
4Applied Research Center, Thomas Jefferson National Accelerator Facility and Department of Molecular Biology, and Chemistry, Christopher Newport University, Newport News, VA 23606, USA
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Sherif Kandil
Sherif Kandil
1Materials Science Department, Institute of Graduate Studies & Research, 163 Horreya Avenue, El-Shatby, Alexandria, Egypt
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Water Supply (2016) 16 (4): 1046–1056.
Article history
Received:
November 04 2015
Accepted:
February 10 2016
Citation
Ashraf Morsy, Shaker Ebrahim, El-Refaie Kenawy, Tarek Abdel-Fattah, Sherif Kandil; Grafted cellulose acetate reverse osmosis membrane using 2-acrylamido-2-methylpropanesulfonic acid for water desalination. Water Supply 1 August 2016; 16 (4): 1046–1056. doi: https://doi.org/10.2166/ws.2016.025
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