Advancing Sustainable Direct Contact Membrane Distillation : Performance and Stability of Novel Polymer Inclusion Membranes
(2025) In Separation and Purification Technology 354.- Abstract
Novel hydrophobic membranes for direct contact membrane distillation (DCMD) were developed using poly(1,1-difluoroethylene) (PVDF) loaded with the ionic liquid methyltrioctylammonium bis(2-ethylhexyl) phosphate (MTOA-DEHP). These polymer inclusion membranes (PIMs) were fabricated via non-solvent induced phase separation (NIPS). Detailed characterization revealed that MTOA-DEHP significantly enhances the morphological and physicochemical properties of the PIMs. Through a series of DCMD experiments, the membrane's flux, salt rejection, and stability under varying conditions, including different feed solutions (i.e., synthetic NaCl solution and real seawater from the Atlantic Ocean), were assessed. Our results demonstrate that the PVDF/20... (More)
Novel hydrophobic membranes for direct contact membrane distillation (DCMD) were developed using poly(1,1-difluoroethylene) (PVDF) loaded with the ionic liquid methyltrioctylammonium bis(2-ethylhexyl) phosphate (MTOA-DEHP). These polymer inclusion membranes (PIMs) were fabricated via non-solvent induced phase separation (NIPS). Detailed characterization revealed that MTOA-DEHP significantly enhances the morphological and physicochemical properties of the PIMs. Through a series of DCMD experiments, the membrane's flux, salt rejection, and stability under varying conditions, including different feed solutions (i.e., synthetic NaCl solution and real seawater from the Atlantic Ocean), were assessed. Our results demonstrate that the PVDF/20 %MTOA-DEHP membrane exhibits superior performance, maintaining consistent transmembrane flux values (8.98 ± 0.61 kg·m−2·h−1) over multiple cycles and achieving high salt rejection rates (>99.9 %). Furthermore, the membrane demonstrates excellent stability, with minimal degradation observed even after prolonged operation. The results affirm the viability of PIMs as a promising avenue for achieving sustainable and efficient desalination via DCMD, particularly in real-world operational scenarios.
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- author
- Ouchn, Rachid ; Chaouqi, Youssef ; Oukkass, Saâd ; Santoro, Sergio ; Halil Avci, Ahmet LU ; Curcio, Efrem and Hlaibi, Miloudi
- organization
- publishing date
- 2025-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Desalination, Ionic liquid, Long-term stability, Membrane distillation, Polymer inclusion membranes
- in
- Separation and Purification Technology
- volume
- 354
- article number
- 129056
- publisher
- Elsevier
- external identifiers
-
- scopus:85200582172
- ISSN
- 1383-5866
- DOI
- 10.1016/j.seppur.2024.129056
- language
- English
- LU publication?
- yes
- id
- 4665e32b-8859-4293-bbbd-99aff2074607
- date added to LUP
- 2024-08-26 10:38:58
- date last changed
- 2024-08-26 10:38:58
@article{4665e32b-8859-4293-bbbd-99aff2074607, abstract = {{<p>Novel hydrophobic membranes for direct contact membrane distillation (DCMD) were developed using poly(1,1-difluoroethylene) (PVDF) loaded with the ionic liquid methyltrioctylammonium bis(2-ethylhexyl) phosphate (MTOA-DEHP). These polymer inclusion membranes (PIMs) were fabricated via non-solvent induced phase separation (NIPS). Detailed characterization revealed that MTOA-DEHP significantly enhances the morphological and physicochemical properties of the PIMs. Through a series of DCMD experiments, the membrane's flux, salt rejection, and stability under varying conditions, including different feed solutions (i.e., synthetic NaCl solution and real seawater from the Atlantic Ocean), were assessed. Our results demonstrate that the PVDF/20 %MTOA-DEHP membrane exhibits superior performance, maintaining consistent transmembrane flux values (8.98 ± 0.61 kg·m<sup>−2</sup>·h<sup>−1</sup>) over multiple cycles and achieving high salt rejection rates (>99.9 %). Furthermore, the membrane demonstrates excellent stability, with minimal degradation observed even after prolonged operation. The results affirm the viability of PIMs as a promising avenue for achieving sustainable and efficient desalination via DCMD, particularly in real-world operational scenarios.</p>}}, author = {{Ouchn, Rachid and Chaouqi, Youssef and Oukkass, Saâd and Santoro, Sergio and Halil Avci, Ahmet and Curcio, Efrem and Hlaibi, Miloudi}}, issn = {{1383-5866}}, keywords = {{Desalination; Ionic liquid; Long-term stability; Membrane distillation; Polymer inclusion membranes}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Separation and Purification Technology}}, title = {{Advancing Sustainable Direct Contact Membrane Distillation : Performance and Stability of Novel Polymer Inclusion Membranes}}, url = {{http://dx.doi.org/10.1016/j.seppur.2024.129056}}, doi = {{10.1016/j.seppur.2024.129056}}, volume = {{354}}, year = {{2025}}, }