Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation
In this study, a pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide (CoCM) was prepared via an in-situ self-sacrificed template method and applied for sulfamethoxazole (SMX) degradation by peroxymonosulfate (PMS) activation under a dead-end membrane filtration mode. The...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/143844 |
| _version_ | 1811686209929347072 |
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| author | Bao, Yueping Lee, Wen Jie Lim, Teik-Thye Wang, Rong Hu, Xiao |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Bao, Yueping Lee, Wen Jie Lim, Teik-Thye Wang, Rong Hu, Xiao |
| author_sort | Bao, Yueping |
| collection | NTU |
| description | In this study, a pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide (CoCM) was prepared via an in-situ self-sacrificed template method and applied for sulfamethoxazole (SMX) degradation by peroxymonosulfate (PMS) activation under a dead-end membrane filtration mode. The physical and chemical properties of the membranes were characterized via FESEM, AFM, XRD and XPS. Results indicated that Co3O4 had been impregnated into the macropores uniformly throughout the whole ceramic membrane without pore blocking. The formation of Cosingle bondOsingle bondAl bonding inhibited the leaching of cobalt during the filtration while the hydroxyl group Co−OH played a crucial role during the radical generation. The contact angle of CoCM decreased, resulting in a higher pure water permeability as compared to the original ceramic membrane. The catalytic degradation of SMX showed that its removal efficiency could be influenced by both contact time and PMS dosage. CoCM exhibited superior antifouling property during the humic acid (HA) removal study. The stability and regeneration of CoCM were investigated. Furthermore, the radical quenching experiment was conducted and the concentration of sulfate radical was quantitatively estimated. Finally, the PMS activation as well as organics removal mechanism in CoCM via the synergistic coupling of catalytic Co3O4 and membrane separation were proposed. |
| first_indexed | 2024-10-01T04:56:47Z |
| format | Journal Article |
| id | ntu-10356/143844 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:56:47Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1438442021-01-28T07:39:17Z Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation Bao, Yueping Lee, Wen Jie Lim, Teik-Thye Wang, Rong Hu, Xiao School of Civil and Environmental Engineering School of Materials Science and Engineering Interdisciplinary Graduate School (IGS) Nanyang Environment and Water Research Institute Engineering::Civil engineering Self-sacrificed Template Fouling In this study, a pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide (CoCM) was prepared via an in-situ self-sacrificed template method and applied for sulfamethoxazole (SMX) degradation by peroxymonosulfate (PMS) activation under a dead-end membrane filtration mode. The physical and chemical properties of the membranes were characterized via FESEM, AFM, XRD and XPS. Results indicated that Co3O4 had been impregnated into the macropores uniformly throughout the whole ceramic membrane without pore blocking. The formation of Cosingle bondOsingle bondAl bonding inhibited the leaching of cobalt during the filtration while the hydroxyl group Co−OH played a crucial role during the radical generation. The contact angle of CoCM decreased, resulting in a higher pure water permeability as compared to the original ceramic membrane. The catalytic degradation of SMX showed that its removal efficiency could be influenced by both contact time and PMS dosage. CoCM exhibited superior antifouling property during the humic acid (HA) removal study. The stability and regeneration of CoCM were investigated. Furthermore, the radical quenching experiment was conducted and the concentration of sulfate radical was quantitatively estimated. Finally, the PMS activation as well as organics removal mechanism in CoCM via the synergistic coupling of catalytic Co3O4 and membrane separation were proposed. Accepted version 2020-09-25T08:30:45Z 2020-09-25T08:30:45Z 2019 Journal Article Bao, Y., Lee, W. J., Lim, T.-T., Wang, R., & Hu, X. (2019). Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation. Applied Catalysis B: Environmental, 254, 37–46. doi:10.1016/j.apcatb.2019.04.081 0926-3373 https://hdl.handle.net/10356/143844 10.1016/j.apcatb.2019.04.081 254 37 46 en Applied Catalysis B: Environmental © 2019 Elsevier B.V. All rights reserved. This paper was published in Applied Catalysis B: Environmental and is made available with permission of Elsevier B.V. application/pdf |
| spellingShingle | Engineering::Civil engineering Self-sacrificed Template Fouling Bao, Yueping Lee, Wen Jie Lim, Teik-Thye Wang, Rong Hu, Xiao Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation |
| title | Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation |
| title_full | Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation |
| title_fullStr | Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation |
| title_full_unstemmed | Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation |
| title_short | Pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination: Synergistic effect between catalytic oxidation and membrane separation |
| title_sort | pore functionalized ceramic membrane with isotropically impregnated cobalt oxide for sulfamethoxazole degradation and membrane fouling elimination synergistic effect between catalytic oxidation and membrane separation |
| topic | Engineering::Civil engineering Self-sacrificed Template Fouling |
| url | https://hdl.handle.net/10356/143844 |
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