Performance of Nanocomposite Polysulfone-Polyaniline Substrates for Enhanced Thin Film Membranes | ||||
| Egyptian Journal of Chemistry | ||||
| Article 52, Volume 65, Issue 10, October 2022, Page 543-550 PDF (859.09 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2022.60278.3290 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Elsayed M. Elnaggar1; Mohamed E.A. Ali2; Mostafa M. Abo-Elfadl2; Salah F. Abdellah  3; Ehab S. Gad1, 3; Amr A. Sammak4; Gamal M. El-kady1
| ||||
| 1Chemistry Dept., Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt | ||||
| 2Egypt Desalination Research Center, of Excellence, Desert Research Center, Cairo, Egypt | ||||
| 3Department of Chemistry, Faculty of Science and Arts, Al-Jouf University, Sakaka, Saudi Arabia | ||||
| 4Chemical warfare administration, Egyptian Ministry of Defense, Cairo, Egypt | ||||
| Abstract | ||||
| Membranes fouling and their degradation using free chlorine are the most common challenges in the desalination process. A blend nano-composite polysulfone /polyaniline were prepared as a substrate for the active polyamide layer. In this work, nano polyaniline emeraldine salt was prepared using a simple chemical oxidative polymerization method. It was added to the polysulfone (PS) substrate layer in the presence of sodium lauryl sulfate as a hydrophilic agent to enhance reverse osmosis properties of the thin film composite membrane. Unmodified and modified polyaniline nano-particles membranes were characterized using XRD, EDX, FT-IR, SEM, particle size distribution and contact angle. The membranes performance was evaluated in terms of water flux and salt rejection using a cross-flow filtration unit. The results showed that the nano-composite membrane had much better water permeability (66 L/m²/h) compared to the control membrane (57 L/m² /h) without significant change in the percentage of salt rejection. The resistance of membranes to bio-fouling and chlorine degradation was evaluated using bovine serum albumin (BSA) as fouling model and sodium hypochlorite, respectively. The modified membrane was more resistant to bio-fouling and chlorine attack because of the strong electrostatic repulsion between poly-aniline PANI and BSA. The prepared polysulfone -polyaniline nano-composite substrate has been enhanced the performance of thin film composite as a reverse osmosis membrane. | ||||
| Keywords | ||||
| Thin film composite membranes; Polyaniline; Polysulfone; Fouling; Chlorination, sodium lauryl sulfate and Reverse osmosis membrane | ||||
|
Statistics Article View: 413 PDF Download: 196 |
||||
