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Gamma-irradiated ja...
Gamma-irradiated janus electrospun nanofiber membranes for desalination and nuclear wastewater treatment
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- Essalhi, Mohamed (författare)
- Umeå universitet,Kemiska institutionen,Department of Chemistry, Umeå University, 90187, Umeå, Sweden.; African Sustainable Agriculture Research Institute (ASARI), Mohammed VI Polytechnic University (UM6P), Laayoune, 70000, Morocco
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- Afsar, Noor Ul (författare)
- Umeå universitet,Kemiska institutionen,Department of Chemistry, Umeå University, 90187, Umeå, Sweden.
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- Bouyer, Denis (författare)
- Institut Europeen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Univ Montpellier, Montpellier, France
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- Sundman, Ola (författare)
- Umeå universitet,Kemiska institutionen,Department of Chemistry, Umeå University, 90187, Umeå, Sweden.
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- Holmboe, Michael (författare)
- Umeå universitet,Kemiska institutionen,Department of Chemistry, Umeå University, 90187, Umeå, Sweden.
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- Khayet, Mohamed (författare)
- Department of Structure of Matter, Thermal Physics and Electronics, Faculty of Physics, University Complutense of Madrid, Avda. Complutense s/n, 28040, Madrid, Spain., Avda. Complutense s/n
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- Jonsson, Mats, 1967- (författare)
- KTH,Tillämpad fysikalisk kemi,Department of Chemistry, KTH Royal Institute of Technology, SE - 100 44, Stockholm, Sweden
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- Tavajohi, Naser (författare)
- Umeå universitet,Kemiska institutionen,Department of Chemistry, Umeå University, 90187, Umeå, Sweden.
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(creator_code:org_t)
- Elsevier B.V. 2024
- 2024
- Engelska.
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Ingår i: Journal of Membrane Science. - : Elsevier B.V.. - 0376-7388 .- 1873-3123. ; 700
- Relaterad länk:
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https://doi.org/10.1...
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https://umu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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 μm. 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/m2.h and 73.27 kg/m2.h in the DCMD using aqueous feed solutions of NaCl and NaNO3, respectively, and 70.80 kg/m2.h and 41.96 kg/m2.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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Energisystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Energy Systems (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Desalination
- Double-layer electrospun nanofibrous membranes
- Hydrophobic/hydrophilic
- Membrane distillation
- Nuclides decontamination
- Simulated nuclear wastewater treatment
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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