RT Journal Article
T1 Gamma-irradiated janus electrospun nanofiber membranes for desalination and nuclear wastewater treatment
A1 Essalhi, Mohamed
A1 Afsar, Noor Ul
A1 Bouyer, Denis
A1 Sundman, Ola
A1 Holmboe, Michael
A1 Khayet Souhaimi, Mohamed
A1 Jonsson, Mats
A1 Tavajohi, Naser
AB This study presents the fabrication of double-layer electrospun nanofibrous membranes (DL-ENMs) using polyvinylidene fluoride (PVDF) and polyether sulfone (PES) based polymers with different degrees of hydrophilicity (PES, sulfonated PES, and PES with hydroxyl terminals). A comparative analysis was carried out with single-layer electrospun nanofiber membranes (SL-ENM) with a total thickness of about 375 mu m. Using feed solutions, including sodium chloride, sodium nitrate, and simulated nuclear wastewater (SNWW), the performance of DL-ENMs was evaluated for desalination and radionuclide decontamination by direct contact membrane distillation (DCMD) and air gap membrane distillation (AGMD) techniques. The results showed that DL-ENMs, especially those incorporating a sulfonated PES-based hydrophilic layer, exhibited superior permeate fluxes, reaching values of 72.72 kg/m(2)h and 73.27 kg/m(2)h in the DCMD using aqueous feed solutions of NaCl and NaNO3, respectively, and 70.80 kg/m(2)h and 41.96 kg/m(2)h using aqueous feed solutions of SNWW in DCMD and AGMD, respectively. Both SL-ENMs and DL-ENMs exhibited high rejection efficiencies and decontamination factors for the feed solutions (>99.9%). In addition, the prepared ENMs were exposed to gamma radiation to evaluate their applicability in real-life applications. The result of irradiation revealed the negative impact of gamma radiation on the fluorine content of PVDF which could be a critical point in using PVDF as a hydrophobic material for decontaminating nuclear wastewater by membrane distillation.
PB Elsevier
SN 0376-7388
YR 2024
FD 2024-05
LK https://hdl.handle.net/20.500.14352/129499
UL https://hdl.handle.net/20.500.14352/129499
LA eng
NO Essalhi, M., Afsar, N. U., Bouyer, D., Sundman, O., Holmboe, M., Khayet, M., ... & Tavajohi, N. (2024). Gamma-irradiated janus electrospun nanofiber membranes for desalination and nuclear wastewater treatment. Journal of Membrane Science, 700, 122726.
NO © 2024 The Authors.
NO Kempe Foundation
DS Docta Complutense
RD 27 dic 2025