Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation
Background: Developing durable superhydrophobic ceramic membranes capable of withstanding harsh operating conditions and maintaining their properties over an extended period poses a challenge due to the limited robustness and stability of superhydrophobic membranes. Methods: In this study, a two-ste...
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Elsevier B.V.
2024
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| author | Omar, Najib Meftah Almukhtar Othman, Mohd. Hafiz Dzarfan Tai, Zhong Sheng Puteh, Mohd. Hafiz Wong, Keng Yinn Tan, Huiyi Tonni Agustiono Kurniawan, Tonni Agustiono Kurniawan Ooi, Boon Seng Nomura, Mikihiro Iwamoto, Yuji |
| author_facet | Omar, Najib Meftah Almukhtar Othman, Mohd. Hafiz Dzarfan Tai, Zhong Sheng Puteh, Mohd. Hafiz Wong, Keng Yinn Tan, Huiyi Tonni Agustiono Kurniawan, Tonni Agustiono Kurniawan Ooi, Boon Seng Nomura, Mikihiro Iwamoto, Yuji |
| author_sort | Omar, Najib Meftah Almukhtar |
| collection | ePrints |
| description | Background: Developing durable superhydrophobic ceramic membranes capable of withstanding harsh operating conditions and maintaining their properties over an extended period poses a challenge due to the limited robustness and stability of superhydrophobic membranes. Methods: In this study, a two-step technique, previously unreported, was successfully used to prepare superhydrophobic mullite-based kaolinite (MK) and stainless steel (SS) composite hollow fibre membranes (HFMs). The surface roughening step was attained through the hydrothermal treatment of copper oxide nanoparticles (CuO) at different reaction times (2- 5 h) on the MK-SS HFM surface. The fluorinating process was achieved using 1H, 1H, 2H, 2H perfluorooctyltriethoxysilane (C8, 97%) through a dip-coating technique. A seawater desalination experiment by a membrane distillation (MD) system evaluated the performance of MK-SS HFM for 500 min. Significant findings: The results revealed that the MK-SS/4 h HFM, characterized by its flake-like structure, exhibited optimal superhydrophobic behavior. It displayed contact angles (CAs) of 155.9° for water, 144° for water/ethanol, 129° for palm oil, and 112° for engine oil, with a liquid entry pressure (LEP) of 5.2 bar Furthermore, the membrane performance was tested in a direct contact membrane distillation (DCMD) at 70 °C using a solution that simulated real seawater conditions, including sodium chloride (NaCl) at 35 g/L, sodium sulfate (Na2SO4) at 1.2 g/L, sodium carbonate (Na2CO3) at 1 g/L, and humic acid at 8 mg/L. Remarkably, a rejection rate of about 99.91% and a permeate flux of 24.3 L/(m².h) were achieved. Despite the presence of organic contaminants and various salts, this superhydrophobic HFM, prepared using a two-step technique, exhibited higher contact angles, rejection rates, and permeate flux than other superhydrophobic HFMs reported in the literature due to its superior superhydrophobic and antiwetting properties. This robust superhydrophobic membrane holds promise for developing effective superhydrophobic HFMs that can be applied in various real MD applications. |
| first_indexed | 2025-02-19T02:44:43Z |
| format | Article |
| id | utm.eprints-108956 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2025-02-19T02:44:43Z |
| publishDate | 2024 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | utm.eprints-1089562024-12-16T00:46:45Z http://eprints.utm.my/108956/ Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation Omar, Najib Meftah Almukhtar Othman, Mohd. Hafiz Dzarfan Tai, Zhong Sheng Puteh, Mohd. Hafiz Wong, Keng Yinn Tan, Huiyi Tonni Agustiono Kurniawan, Tonni Agustiono Kurniawan Ooi, Boon Seng Nomura, Mikihiro Iwamoto, Yuji Q Science (General) TA Engineering (General). Civil engineering (General) Background: Developing durable superhydrophobic ceramic membranes capable of withstanding harsh operating conditions and maintaining their properties over an extended period poses a challenge due to the limited robustness and stability of superhydrophobic membranes. Methods: In this study, a two-step technique, previously unreported, was successfully used to prepare superhydrophobic mullite-based kaolinite (MK) and stainless steel (SS) composite hollow fibre membranes (HFMs). The surface roughening step was attained through the hydrothermal treatment of copper oxide nanoparticles (CuO) at different reaction times (2- 5 h) on the MK-SS HFM surface. The fluorinating process was achieved using 1H, 1H, 2H, 2H perfluorooctyltriethoxysilane (C8, 97%) through a dip-coating technique. A seawater desalination experiment by a membrane distillation (MD) system evaluated the performance of MK-SS HFM for 500 min. Significant findings: The results revealed that the MK-SS/4 h HFM, characterized by its flake-like structure, exhibited optimal superhydrophobic behavior. It displayed contact angles (CAs) of 155.9° for water, 144° for water/ethanol, 129° for palm oil, and 112° for engine oil, with a liquid entry pressure (LEP) of 5.2 bar Furthermore, the membrane performance was tested in a direct contact membrane distillation (DCMD) at 70 °C using a solution that simulated real seawater conditions, including sodium chloride (NaCl) at 35 g/L, sodium sulfate (Na2SO4) at 1.2 g/L, sodium carbonate (Na2CO3) at 1 g/L, and humic acid at 8 mg/L. Remarkably, a rejection rate of about 99.91% and a permeate flux of 24.3 L/(m².h) were achieved. Despite the presence of organic contaminants and various salts, this superhydrophobic HFM, prepared using a two-step technique, exhibited higher contact angles, rejection rates, and permeate flux than other superhydrophobic HFMs reported in the literature due to its superior superhydrophobic and antiwetting properties. This robust superhydrophobic membrane holds promise for developing effective superhydrophobic HFMs that can be applied in various real MD applications. Elsevier B.V. 2024-02 Article PeerReviewed Omar, Najib Meftah Almukhtar and Othman, Mohd. Hafiz Dzarfan and Tai, Zhong Sheng and Puteh, Mohd. Hafiz and Wong, Keng Yinn and Tan, Huiyi and Tonni Agustiono Kurniawan, Tonni Agustiono Kurniawan and Ooi, Boon Seng and Nomura, Mikihiro and Iwamoto, Yuji (2024) Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation. Journal of the Taiwan Institute of Chemical Engineers, 155 (NA). NA. ISSN 1876-1070 http://dx.doi.org/10.1016/j.jtice.2023.105277 DOI:10.1016/j.jtice.2023.105277 |
| spellingShingle | Q Science (General) TA Engineering (General). Civil engineering (General) Omar, Najib Meftah Almukhtar Othman, Mohd. Hafiz Dzarfan Tai, Zhong Sheng Puteh, Mohd. Hafiz Wong, Keng Yinn Tan, Huiyi Tonni Agustiono Kurniawan, Tonni Agustiono Kurniawan Ooi, Boon Seng Nomura, Mikihiro Iwamoto, Yuji Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation |
| title | Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation |
| title_full | Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation |
| title_fullStr | Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation |
| title_full_unstemmed | Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation |
| title_short | Development of superhydrophobic ceramic membrane decorated with flake-like structure by two-step synthesis for seawater desalination by membrane distillation |
| title_sort | development of superhydrophobic ceramic membrane decorated with flake like structure by two step synthesis for seawater desalination by membrane distillation |
| topic | Q Science (General) TA Engineering (General). Civil engineering (General) |
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