Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation
Polyolefin waste is among the most generated yet least recycled. Despite its potential as a feedstock of superhydrophobic membranes for organic solvent filtration, it remains a challenge to achieve high selectivity and permeability for viscous oils. In this study, we valorized polyolefin waste into...
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| مؤلفون آخرون: | , |
| التنسيق: | article |
| منشور في: |
2024
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://dx.doi.org/10.1016/j.cej.2024.150230 https://www.sciencedirect.com/science/article/pii/S1385894724017170 http://hdl.handle.net/10576/64353 |
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| _version_ | 1857415085979336704 |
|---|---|
| author | Saleem, Junaid |
| author2 | Moghal, Zubair Khalid Baig McKay, Gordon |
| author2_role | author author |
| author_facet | Saleem, Junaid Moghal, Zubair Khalid Baig McKay, Gordon |
| author_role | author |
| dc.creator.none.fl_str_mv | Saleem, Junaid Moghal, Zubair Khalid Baig McKay, Gordon |
| dc.date.none.fl_str_mv | 2024-04-15 2025-04-21T07:49:30Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.cej.2024.150230 13858947 https://www.sciencedirect.com/science/article/pii/S1385894724017170 http://hdl.handle.net/10576/64353 486 1873-3212 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Plastic upcycling Filtration Membrane Trimodal Polyolefin Acid-catalyzed oxidation Cavities Macrovoids Micropores |
| dc.title.none.fl_str_mv | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Polyolefin waste is among the most generated yet least recycled. Despite its potential as a feedstock of superhydrophobic membranes for organic solvent filtration, it remains a challenge to achieve high selectivity and permeability for viscous oils. In this study, we valorized polyolefin waste into trimodal water filtration membranes through acid-catalyzed oxidation and a void inducer. This approach enabled the creation of membranes with exceptional wettability and strength, characterized by a combination of micropores, macrovoids (30–70 µm), and cavities (150–200 µm). The acid-catalyzed oxidation introduced oxygen moieties into the membrane structure, resulting in a reduced water contact angle, improved hydrophilicity, and increased permeability. The micropores facilitated capillary action, macrovoids enabled efficient water passage, and cavities acted as oil reservoirs, for optimal oil–water separation. Various membranes were synthesized using low-density and high-density polyethylene (PE), polypropylene (PP), and their blend. The obtained results were compared with commercial membranes, revealing a flow rate of 43 ml/min, a retention capacity of 261 mg, and an oil removal efficiency ranging from 84–94 %. Furthermore, the membranes exhibited recyclability, demonstrating stability over at least 10 cycles. This hybrid process transforms plastic waste into trimodal water filtration membranes, achieving a balance between superoleophilicity and hydrophilicity. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_36c9a42bb5aaf6428882b4560476d0b0 |
| identifier_str_mv | 13858947 486 1873-3212 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/64353 |
| publishDate | 2024 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| spelling | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidationSaleem, JunaidMoghal, Zubair Khalid BaigMcKay, GordonPlastic upcyclingFiltrationMembraneTrimodalPolyolefinAcid-catalyzed oxidationCavitiesMacrovoidsMicroporesPolyolefin waste is among the most generated yet least recycled. Despite its potential as a feedstock of superhydrophobic membranes for organic solvent filtration, it remains a challenge to achieve high selectivity and permeability for viscous oils. In this study, we valorized polyolefin waste into trimodal water filtration membranes through acid-catalyzed oxidation and a void inducer. This approach enabled the creation of membranes with exceptional wettability and strength, characterized by a combination of micropores, macrovoids (30–70 µm), and cavities (150–200 µm). The acid-catalyzed oxidation introduced oxygen moieties into the membrane structure, resulting in a reduced water contact angle, improved hydrophilicity, and increased permeability. The micropores facilitated capillary action, macrovoids enabled efficient water passage, and cavities acted as oil reservoirs, for optimal oil–water separation. Various membranes were synthesized using low-density and high-density polyethylene (PE), polypropylene (PP), and their blend. The obtained results were compared with commercial membranes, revealing a flow rate of 43 ml/min, a retention capacity of 261 mg, and an oil removal efficiency ranging from 84–94 %. Furthermore, the membranes exhibited recyclability, demonstrating stability over at least 10 cycles. This hybrid process transforms plastic waste into trimodal water filtration membranes, achieving a balance between superoleophilicity and hydrophilicity.This publication was made possible by NPRP grant number NPRP12S-0325-190443 from the Qatar National Research Fund (a member of the Qatar Foundation). Open access funding is provided by Qatar National Library. The authors would also like to acknowledge Core Labs, Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation for providing assistance in SEM.Elsevier2025-04-21T07:49:30Z2024-04-15Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.cej.2024.15023013858947https://www.sciencedirect.com/science/article/pii/S1385894724017170http://hdl.handle.net/10576/643534861873-3212enhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/643532025-04-21T19:07:19Z |
| spellingShingle | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation Saleem, Junaid Plastic upcycling Filtration Membrane Trimodal Polyolefin Acid-catalyzed oxidation Cavities Macrovoids Micropores |
| status_str | publishedVersion |
| title | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation |
| title_full | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation |
| title_fullStr | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation |
| title_full_unstemmed | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation |
| title_short | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation |
| title_sort | Harnessing plastic waste for sustainable membrane filtration with trimodal structure through acid-catalyzed oxidation |
| topic | Plastic upcycling Filtration Membrane Trimodal Polyolefin Acid-catalyzed oxidation Cavities Macrovoids Micropores |
| url | http://dx.doi.org/10.1016/j.cej.2024.150230 https://www.sciencedirect.com/science/article/pii/S1385894724017170 http://hdl.handle.net/10576/64353 |