Sustainable air gap membrane distillation using recycled acrylic (RA) membranes: Application to Shatt Al-Arab water desalination
DOI:
https://doi.org/10.31699/IJCPE.2026.1.4Keywords:
Desalination; Air gap membrane distillation (AGMD); Electrospinning system; Hydrophobic polymer; Nonwoven Nanofibers; Shatt al-Arab RiverAbstract
One of the research motivations in the MD field is to develop high-performance membranes by preparing hydrophobic membranes due to their high throughput and rejection. The current work focuses on the fabrication and performance evaluation of electrospun nanofiber membranes using recycled acrylic (Polymethyl Methacrylate) (RA) via air gap membrane distillation (AGMD). Recycling this material not only reduces plastic waste and pollution, but it also offers a low-cost alternative to virgin polymers, which aids in membrane fabrication. Scanning Electron Microscopy (SEM) confirmed a uniform, highly porous nanofibrous structure with interconnected pores in the prepared nanofiber membranes. 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 RA. The assessments revealed that the electrospun nanofibers demonstrated considerable flexibility while preserving their structural and surface characteristics as evaluated through mechanical strength testing. The resulting membranes were utilized in a water desalination process employing an AGMD setup, tested under varying feed temperatures (45, 55, and 65°C) and flow rates (0.2, 0.3, and 0.4 L/min) to evaluate their impact on desalination efficiency. It was observed that increasing the feed temperature significantly boosted water flux; moreover, the feed flow rate notably improved permeate flux within AGMD systems, thereby enhancing mass and heat transfer capabilities. The highest permeate flux recorded was approximately 19 kg/m²·hr, achieved at a temperature of 65°C with a flow rate of 0.3 L/min and a salt rejection rate of 99.999%. Consequently, this study's results indicate that RA-based nanofiber membranes hold potential for sustainable and effective water desalination. Furthermore, AGMD proved to be highly efficient in salt removal from the Shatt al-Arab river and may serve as a viable solution for providing clean drinking water in southern Iraq.
Received on 26/07/2025
Received in Revised Form on 07/10/2025
Accepted on 07/10/2025
Published on 30/03/2026
References
[1] M. Al-Hashimi and F. Alnedawy, “Assessment of the Desalination Effect on Shat Al-Arab,” Engineering and Technology Journal, vol. 37, no. 3C, pp. 385–390, Jun. 2019, https://doi.org/10.30684/etj.37.3c.13
[2] Z. A. Al-Salihi, A. H. Kamel, and I. M. Abdulhameed, “Effect of climate changes on water resources in Iraq: A review study,” in AIP Conference Proceedings, 2024, p. 030079. https://doi.org/10.1063/5.0190474
[3] H. H. Aldahlaki, A. M. Al-Yaqoobi, and A. Alobaidy, “Desalination of Shatt al-Arab water by vacuum membrane distillation (VMD),” in AIP Conference Proceedings, American Institute of Physics Inc., Mar. 2020. https://doi.org/10.1063/5.0000034
[4] M. Bin Abid, R. A. Wahab, M. A. Salam, I. A. Moujdin, and L. Gzara, “Desalination technologies, membrane distillation, and electrospinning, an overview,” Heliyon, vol. 9, no. 2, p. e12810, Feb. 2023, https://doi.org/10.1016/j.heliyon.2023.e12810
[5] J. Feria-Díaz, M. López-Méndez, J. Rodríguez-Miranda, L. Sandoval-Herazo, and F. Correa-Mahecha, “Commercial Thermal Technologies for Desalination of Water from Renewable Energies: A State of the Art Review,” Processes, vol. 9, no. 2, p. 262, Jan. 2021, https://doi.org/10.3390/pr9020262
[6] Y. Zhou, L. Chen, M. Huang, W. Hu, G. Chen, and B. Wu, “Experimental Investigation of the Desalination Process for Direct Contact Membrane Distillation Using Plate and Frame Membrane Module,” Applied Sciences (Switzerland), vol. 13, no. 16, Aug. 2023, https://doi.org/10.3390/app13169439
[7] M. R. Elmarghany, A. H. El-Shazly, M. S. Salem, M. N. Sabry, and N. Nady, “Thermal analysis evaluation of direct contact membrane distillation system,” Case Studies in Thermal Engineering, vol. 13, Mar. 2019, https://doi.org/10.1016/j.csite.2018.100377
[8] N. N. Safi and B. I. Waisi, “Enhanced Hydrophobic Double-Layer Nanofibers Membranes for Direct Contact Membrane Distillation,” Ecological Engineering and Environmental Technology, vol. 25, no. 4, pp. 325–335, 2024, https://doi.org/10.12912/27197050/184224
[9] S. M. Alkarbouly and B. I. Waisi, “Fabrication of Electrospun Nanofibers Membrane for Emulsified Oil Removal from Oily Wastewater,” Baghdad Science Journal, vol. 19, no. 6, pp. 1238–1248, 2022, https://doi.org/10.21123/bsj.2022.6421
[10] L. Camacho et al., “Advances in Membrane Distillation for Water Desalination and Purification Applications,” Water (Basel), vol. 5, no. 1, pp. 94–196, Jan. 2013, https://doi.org/10.3390/w5010094
[11] E. H. Papaioannou et al., “Agri-Food Industry Waste as Resource of Chemicals: The Role of Membrane Technology in Their Sustainable Recycling,” Sustainability, 14(3), p.1483, Feb. 01, 2022. https://doi.org/10.3390/su14031483
[12] S. Yarlagadda, V. G. Gude, L. M. Camacho, S. Pinappu, and S. Deng, “Potable water recovery from As, U, and F contaminated ground waters by direct contact membrane distillation process,” Journal of Hazard Materials, vol. 192, no. 3, pp. 1388–1394, Sep. 2011, https://doi.org/10.1016/j.jhazmat.2011.06.056
[13] A. Politano et al., “Photothermal Membrane Distillation for Seawater Desalination,” Advanced Materials, vol. 29, no. 2, Jan. 2017, https://doi.org/10.1002/adma.201603504
[14] J. Xu, Y. B. Singh, G. L. Amy, and N. Ghaffour, “Effect of operating parameters and membrane characteristics on air gap membrane distillation performance for the treatment of highly saline water,” Journal of Membrane Science, vol. 512, pp. 73–82, Aug. 2016, https://doi.org/10.1016/j.memsci.2016.04.010
[15] M. Gryta, “The Application of Submerged Modules for Membrane Distillation,” Membranes (Basel), vol. 10, no. 2, p. 25, Feb. 2020, https://doi.org/10.3390/membranes10020025
[16] J. Fang, L. Zhang, D. Sutton, X. Wang, and T. Lin, “Needleless melt-electrospinning of polypropylene nanofibres,” Journal of Nanomaterials, vol. 2012, pp. 1–9, 2012, https://doi.org/10.1155/2012/382639
[17] A. Albiladi, L. Gzara, H. Organji, N. S. Alkayal, and A. Figoli, “Electrospun Poly (Vinylidene Fluoride-Co-Hexafluoropropylene) Nanofiber Membranes for Brine Treatment via Membrane Distillation,” Polymers (Basel), vol. 15, no. 12, Jun. 2023, https://doi.org/10.3390/polym15122706
[18] C. Defor and S. F. Chou, “Electrospun polytetrafluoroethylene (PTFE) fibers in membrane distillation applications,” AIMS Material Science, vol. 11, no. 6, pp. 1179–1198, 2024, https://doi.org/10.3934/MATERSCI.2024058
[19] Y. S. Khoo, W. J. Lau, S. W. Hasan, W. N. W. Salleh, and A. F. Ismail, “New approach of recycling end-of-life reverse osmosis membranes via sonication for microfiltration process,” Journal of Environmental Chemical Engineering, vol. 9, no. 6, p. 106731, Dec. 2021, https://doi.org/10.1016/j.jece.2021.106731
[20] J. Landaburu-Aguirre, R. García-Pacheco, S. Molina, L. Rodríguez-Sáez, J. Rabadán, and E. García-Calvo, “Fouling prevention, preparing for re-use and membrane recycling. Towards circular economy in RO desalination,” Desalination, vol. 393, pp. 16–30, Sep. 2016, https://doi.org/10.1016/j.desal.2016.04.002
[21] S. Tarek Ghaly, H. Noby, J. i. Hayashi, and A. H. El-shazly, “Various waste polystyrene for useful membrane fabrication: Comparative experimental study,” Materials Today Proceeding, Aug. 2023, https://doi.org/10.1016/j.matpr.2023.07.368
[22] A. Zulfi et al., “Air filtration media from electrospun waste high-impact polystyrene fiber membrane,” Material Research Express, vol. 5, no. 3, p. 035049, Mar. 2018, https://doi.org/10.1088/2053-1591/aab6ef
[23] C. Aciu, D. L. Manea, L. M. Molnar, and E. Jumate, “Recycling of Polystyrene Waste in the Composition of Ecological Mortars,” Procedia Technology, vol. 19, pp. 498–505, 2015, https://doi.org/10.1016/j.protcy.2015.02.071
[24] S. Sharifian and N. Asasian-Kolur, “Polyethylene terephthalate (PET) waste to carbon materials: Theory, methods and applications,” Journal of Analytical and Applied Pyrolysis, vol. 163, p. 105496, May 2022, https://doi.org/10.1016/j.jaap.2022.105496
[25] P. S. Goh, M. H. D. Othman, and T. Matsuura, “Waste reutilization in polymeric membrane fabrication: A new direction in membranes for separation,” Membranes, Oct. 01, 2021, MDPI. https://doi.org/10.3390/membranes11100782
[26] N. N. Safi and B. I. Waisi, “Preparation of electrospun double-layer PVDF:PMMA membrane non-woven nanofibers for desalination by membrane distillation process,” Desalination and Water Treatment, vol. 314, pp. 49–58, Dec. 2023, https://doi.org/10.5004/dwt.2023.30063
[27] H. S. Al-Okaidy and B. I. Waisi, “The Effect of Electrospinning Parameters on Morphological and Mechanical Properties of PAN-based Nanofibers Membrane,” Baghdad Science Journal, vol. 20, no. 4, pp. 1433–1441, 2023, https://doi.org/10.21123/bsj.2023.7309
[28] S. Tabe, “A Review of Electrospun Nanofiber Membranes Article info,” Journal of Membrane Science and Research, vol. 3, pp. 228–239, 2017.
[29] N. N. Safi and B. I. Waisi, “Preparation of electrospun double-layer PVDF:PMMA membrane non-woven nanofibers for desalination by membrane distillation process,” Desalination and Water Treatment, vol. 314, pp. 49–58, Dec. 2023, https://doi.org/10.5004/dwt.2023.30063
[30] H. S. Al-Okaidy and B. I. Waisi, “The Effect of Electrospinning Parameters on Morphological and Mechanical Properties of PAN-based Nanofibers Membrane,” Baghdad Science Journal, vol. 20, no. 4, pp. 1433–1441, 2023, https://doi.org/10.21123/bsj.2023.7309
[31] T. Diwan, Z. N. Abudi, M. H. Al-Furaiji, and A. Nijmeijer, “A Competitive Study Using Electrospinning and Phase Inversion to Prepare Polymeric Membranes for Oil Removal,” Membranes (Basel), vol. 13, no. 5, May 2023, https://doi.org/10.3390/membranes13050474
[32] R. Navarro-Tovar, B. Qiu, P. Martin, P. Gorgojo, and M. Perez-Page, “Advanced desalination performance using PVDF electrospun nanofiber membranes across multiple membrane distillation configuration,” Desalination, vol. 598, Apr. 2025, https://doi.org/10.1016/j.desal.2024.118425
[33] N. Naseeb, A. A. Mohammed, T. Laoui, and Z. Khan, “A novel PAN-GO-SiO2 hybrid membrane for separating oil and water from emulsified mixture,” Materials, vol. 12, no. 2, Jan. 2019, https://doi.org/10.3390/ma12020212
[34] M. Rabiei et al., “Measurement modulus of elasticity related to the atomic density of planes in unit cell of crystal lattices,” Materials, vol. 13, no. 19, pp. 1–17, Oct. 2020, https://doi.org/10.3390/ma13194380
[35] A. Greiner and J. H. Wendorff, “Electrospinning: A Fascinating Method for the Preparation of Ultrathin Fibers,” Angewandte Chemie International Edition, vol. 46, no. 30, pp. 5670–5703, Jul. 2007, https://doi.org/10.1002/anie.200604646
[36] N. F. Al-Harby, M. El Batouti, and M. M. Elewa, “A Comparative Analysis of Pervaporation and Membrane Distillation Techniques for Desalination Utilising the Sweeping Air Methodology with Novel and Economical Pervaporation Membranes,” Polymers (Basel), vol. 15, no. 21, Nov. 2023, https://doi.org/10.3390/polym15214237
[37] M. Irfan, H. Basri, M. Irfan, and J. Bahru, “An Experimental Investigation: Effect of Phase Inversion Methods on Membrane Structure and Its Performance on PEG Filtration,” Journal of Applied Membrane Science & Technology, vol. 17, pp. 17–23, 2015. https://doi.org/10.11113/amst.v17i1.11
[38] X. Fan et al., “High desalination permeability, wetting and fouling resistance on superhydrophobic carbon nanotube hollow fiber membrane under self-powered electrochemical assistance,” Journal of Membrane Science, vol. 514, pp. 501–509, Sep. 2016, https://doi.org/10.1016/j.memsci.2016.05.003
[39] M. N. Akhtar, A. B. Sulong, S. Ab. Karim, C. H. Azhari, and M. R. Raza, “Evaluation of thermal, morphological and mechanical properties of PMMA/NaCl/DMF electrospun nanofibers: an investigation through surface methodology approach,” Iranian Polymer Journal, vol. 24, no. 12, pp. 1025–1038, Dec. 2015, https://doi.org/10.1007/s13726-015-0390-8
[40] B. I. Waisi, “Carbonized Copolymers Nonwoven Nanofibers Composite: Surface Morphology and Fibers Orientation,” Iraqi Journal of Chemical and Petroleum Engineering, vol. 20, no. 2, pp. 11–15, Jun. 2019, https://doi.org/10.31699/IJCPE.2019.2.2
[41] B. I. Waisi, S. M. Al-Jubouri, and J. R. McCutcheon, “Fabrication and Characterizations of Silica Nanoparticle Embedded Carbon Nanofibers,” Industrial Engineering Chemical Research, vol. 58, no. 11, pp. 4462–4467, Mar. 2019, https://doi.org/10.1021/acs.iecr.8b05825
[42] J. Ren, X. Wang, L. Zhao, M. Li, and W. Yang, “Effective Removal of Dyes from Aqueous Solutions by a Gelatin Hydrogel,” Journal of Polymer Environment, vol. 29, no. 11, pp. 3497–3508, Nov. 2021, https://doi.org/10.1007/s10924-021-02136-z
[43] A. K. Chakka, A. Muhammed, P. Z. Sakhare, and N. Bhaskar, “Poultry Processing Waste as an Alternative Source for Mammalian Gelatin: Extraction and Characterization of Gelatin from Chicken Feet Using Food Grade Acids,” Waste Biomass Valorization, vol. 8, no. 8, pp. 2583–2593, Dec. 2017, https://doi.org/10.1007/s12649-016-9756-1
[44] I. A. Said, T. Chomiak, J. Floyd, and Q. Li, “Sweeping gas membrane distillation (SGMD) for wastewater treatment, concentration, and desalination: A comprehensive review,” Chemical Engineering and Processing - Process Intensification, vol. 153, p. 107960, Jul. 2020, https://doi.org/10.1016/j.cep.2020.107960
[45] Y. C. Woo et al., “W5ater desalination using graphene-enhanced electrospun nanofiber membrane via air gap membrane distillation,” Journal of Membrane Science, vol. 520, pp. 99–110, Dec. 2016, https://doi.org/10.1016/j.memsci.2016.07.049
[46] M. R. S. Kebria et al., “Hyper-branched dendritic structure modified PVDF electrospun membranes for air gap membrane distillation,” Desalination, vol. 479, p. 114307, Apr. 2020, https://doi.org/10.1016/j.desal.2019.114307
[47] C. Feng et al., “Production of drinking water from saline water by air-gap membrane distillation using polyvinylidene fluoride nanofiber membrane,” Journal of Membrane Science, vol. 311, no. 1–2, pp. 1–6, Mar. 2008, https://doi.org/10.1016/j.memsci.2007.12.026
[48] Y. Xie, L. Yu, and Y. Yu, “Improved desalination performance of fluorinated graphene oxide blended PVDF electrospun nanofiber membrane for air gap membrane distillation,” Desalination and Water Treatment, vol. 317, Jan. 2024, https://doi.org/10.1016/j.dwt.2024.100184
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