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Electrospun Nanofiber Membranes from Recycled Acrylic for High-Salinity Brine Desalination via Air Gap Membrane Distillation | ||
| Pollution | ||
| دوره 12، شماره 1، فروردین 2026، صفحه 153-166 اصل مقاله (1.06 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2025.395374.2937 | ||
| نویسندگان | ||
| Safa Naser Mohammed؛ Basma Ismael Waisi* | ||
| Department of Chemical Engineering, College of Engineering, University of Baghdad, P.O. Box 47024, Baghdad, Iraq | ||
| چکیده | ||
| This study reports the fabrication and performance evaluation of electrospun nanofiber membranes made from recycled acrylic (polymethyl methacrylate (PMMA)) for use in air gap membrane distillation (AGMD) systems targeting high-salinity brine desalination. Scanning Electron Microscopy (SEM) confirmed that the membranes possessed a uniform, highly porous nanofibrous structure with interconnected pores conducive to vapor transport. Atomic Force Microscopy (AFM) revealed a rough surface morphology, while water contact angle measurements exceeding 121° indicated excellent hydrophobicity, critical for effective liquid, vapor separation. Fourier-transform infrared spectroscopy (FTIR) verified the preservation of key ester functional groups, confirming the chemical integrity of the recycled acrylic. Performance testing was conducted under various feed temperatures (45–65 °C), flow rates (0.2–0.4 L/min), NaCl concentrations (35–140 g/L), and air gap distances (6–9 mm). The membranes achieved a maximum flux of 9.2 kg/m²·h at 65 °C and 0.4 L/min. As expected, higher salt concentrations reduced flux due to lower vapor pressure and increased concentration polarization. Despite variations in operating conditions, salt rejection consistently exceeded 99.994%, demonstrating excellent selectivity and operational stability. These results highlight the potential of recycled acrylic-based nanofiber membranes as a sustainable and high-performance solution for brine desalination using AGMD. | ||
| کلیدواژهها | ||
| Recycled acrylic؛ Brine desalination؛ Membrane Distillation؛ Electrospinning | ||
| مراجع | ||
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