Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum
<div><p>Despite extensive research efforts focusing on tackling membrane biofouling, one of the biggest problems associated with membrane technology, there has been little headway in this area. This study presents novel polyethersulfone (PES) membranes synthesized via a phase inversion m...
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2019
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| author | Ahmad Najjar (18174142) |
| author2 | Souhir Sabri (9553808) Rashad Al-Gaashani (16936965) Muataz Ali Atieh (14156907) Viktor Kochkodan (14152707) |
| author2_role | author author author author |
| author_facet | Ahmad Najjar (18174142) Souhir Sabri (9553808) Rashad Al-Gaashani (16936965) Muataz Ali Atieh (14156907) Viktor Kochkodan (14152707) |
| author_role | author |
| dc.creator.none.fl_str_mv | Ahmad Najjar (18174142) Souhir Sabri (9553808) Rashad Al-Gaashani (16936965) Muataz Ali Atieh (14156907) Viktor Kochkodan (14152707) |
| dc.date.none.fl_str_mv | 2019-02-22T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.3390/membranes9020032 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Antibiofouling_Performance_by_Polyethersulfone_Membranes_Cast_with_Oxidized_Multiwalled_Carbon_Nanotubes_and_Arabic_Gum/25427542 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering oxidized multiwalled carbon nanotubes arabic gum polyethersulfone membranes ultrafiltration fouling biofouling and hydrophilicity |
| dc.title.none.fl_str_mv | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <div><p>Despite extensive research efforts focusing on tackling membrane biofouling, one of the biggest problems associated with membrane technology, there has been little headway in this area. This study presents novel polyethersulfone (PES) membranes synthesized via a phase inversion method at incremental loadings of functionalized oxidized multiwalled carbon nanotubes (OMWCNT) along with 1 wt. % arabic gum (AG). The synthesized OMWCNT were examined using scanning electron microscopy and transmission electron microscopy for morphological changes compared to the commercially obtained carbon nanotubes. Additionally energy-dispersive X-ray spectroscopy was carried out on the raw and OMWCNT materials, indicating an almost 2-fold increase in oxygen content in the latter sample. The cast PES/OMWCNT membranes were extensively characterized, and underwent a series of performance testing using bovine serum albumin solution for fouling tests and model Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacterial species for anti-biofouling experiments. Results indicated that the composite PES membranes, which incorporated the OMWCNT and AG, possessed significantly stronger hydrophilicity and negative surface charge as evidenced by water contact angle and zeta potential data, respectively, when compared to plain PES membranes. Furthermore atomic force microscopy analysis showed that the PES/OMWCNT membranes exhibited significantly lower surface roughness values. Together, these membrane surface features were held responsible for the anti-adhesive nature of the hybrid membranes seen during biofouling tests. Importantly, the prepared membranes were able to inhibit bacterial colonization upon incubation with both Gram-positive and Gram-negative bacterial suspensions. The PES/OMWCNT membranes also presented more resilient normalized flux values when compared to neat PES and commercial membrane samples during filtration of both bacterial suspensions and real treated sewage effluents. Taken together, the results of this study allude to OMWCNT and AG as promising additives, for incorporation into polymeric membranes to enhance biofouling resistance.</p><p> </p></div><h2>Other Information</h2> <p> Published in: Membranes<br> License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/membranes9020032" target="_blank">https://dx.doi.org/10.3390/membranes9020032</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_772347f05158ba967556032092c2a36d |
| identifier_str_mv | 10.3390/membranes9020032 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/25427542 |
| publishDate | 2019 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic GumAhmad Najjar (18174142)Souhir Sabri (9553808)Rashad Al-Gaashani (16936965)Muataz Ali Atieh (14156907)Viktor Kochkodan (14152707)EngineeringChemical engineeringoxidized multiwalled carbon nanotubesarabic gumpolyethersulfonemembranesultrafiltrationfoulingbiofouling and hydrophilicity<div><p>Despite extensive research efforts focusing on tackling membrane biofouling, one of the biggest problems associated with membrane technology, there has been little headway in this area. This study presents novel polyethersulfone (PES) membranes synthesized via a phase inversion method at incremental loadings of functionalized oxidized multiwalled carbon nanotubes (OMWCNT) along with 1 wt. % arabic gum (AG). The synthesized OMWCNT were examined using scanning electron microscopy and transmission electron microscopy for morphological changes compared to the commercially obtained carbon nanotubes. Additionally energy-dispersive X-ray spectroscopy was carried out on the raw and OMWCNT materials, indicating an almost 2-fold increase in oxygen content in the latter sample. The cast PES/OMWCNT membranes were extensively characterized, and underwent a series of performance testing using bovine serum albumin solution for fouling tests and model Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacterial species for anti-biofouling experiments. Results indicated that the composite PES membranes, which incorporated the OMWCNT and AG, possessed significantly stronger hydrophilicity and negative surface charge as evidenced by water contact angle and zeta potential data, respectively, when compared to plain PES membranes. Furthermore atomic force microscopy analysis showed that the PES/OMWCNT membranes exhibited significantly lower surface roughness values. Together, these membrane surface features were held responsible for the anti-adhesive nature of the hybrid membranes seen during biofouling tests. Importantly, the prepared membranes were able to inhibit bacterial colonization upon incubation with both Gram-positive and Gram-negative bacterial suspensions. The PES/OMWCNT membranes also presented more resilient normalized flux values when compared to neat PES and commercial membrane samples during filtration of both bacterial suspensions and real treated sewage effluents. Taken together, the results of this study allude to OMWCNT and AG as promising additives, for incorporation into polymeric membranes to enhance biofouling resistance.</p><p> </p></div><h2>Other Information</h2> <p> Published in: Membranes<br> License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/membranes9020032" target="_blank">https://dx.doi.org/10.3390/membranes9020032</a></p>2019-02-22T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.3390/membranes9020032https://figshare.com/articles/journal_contribution/Antibiofouling_Performance_by_Polyethersulfone_Membranes_Cast_with_Oxidized_Multiwalled_Carbon_Nanotubes_and_Arabic_Gum/25427542CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/254275422019-02-22T03:00:00Z |
| spellingShingle | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum Ahmad Najjar (18174142) Engineering Chemical engineering oxidized multiwalled carbon nanotubes arabic gum polyethersulfone membranes ultrafiltration fouling biofouling and hydrophilicity |
| status_str | publishedVersion |
| title | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum |
| title_full | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum |
| title_fullStr | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum |
| title_full_unstemmed | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum |
| title_short | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum |
| title_sort | Antibiofouling Performance by Polyethersulfone Membranes Cast with Oxidized Multiwalled Carbon Nanotubes and Arabic Gum |
| topic | Engineering Chemical engineering oxidized multiwalled carbon nanotubes arabic gum polyethersulfone membranes ultrafiltration fouling biofouling and hydrophilicity |