| 研究課題/領域番号 |
23K13588
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| 研究機関 | 神戸大学 |
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研究代表者 |
Guan Kecheng 神戸大学, 先端膜工学研究センター, 助教 (10912446)
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| 研究期間 (年度) |
2023-04-01 – 2026-03-31
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| キーワード | Membrane distillation / Seawater desalination / Surface coating |
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| 研究実績の概要 |
This research project aims to develop suitable coatings for anti-fouling membrane distillation. The study investigates how coating structure and properties impact distillation performance and analyze interactions between coating materials and foulants to identify anti-fouling mechanisms. This year, a polyelectrolyte complex coating preparation method was developed, and the feasibility of membrane distillation was assessed.
1. A layer-by-layer assembly technique using oppositely charged polyelectrolytes was employed to coat the substrate membrane. The impact of assembling layers on coating morphology was evaluated.
2. The performance of coated membranes in membrane distillation with simulated seawater and real seawater was assessed to demonstrate their fouling resistance capabilities.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
This year, a polymer coating consisting of polyethylenimine and sodium alginate was successfully developed to enhance the anti-fouling properties of membrane distillation. The coated membranes were tested for treating seawater contaminated with oils and minerals, showing promising results in terms of durability during desalination and concentration processes. A comparison with pristine membranes revealed clear advantages of the coatings. The effectiveness of a continuous coating layer structure for membranes used in membrane distillation has been demonstrated, suggesting that further studies based on this concept could progress well. Therefore, it is considered that the research is currently progressing rather smoothly.
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| 今後の研究の推進方策 |
In order to enhance the anti-fouling performance of the membrane, it is necessary to investigate the mechanisms behind the coating that provides this feature. This will guide future designs of coating materials and structures. It is important to understand how specific functional groups in materials (such as hydrophilicity and metal-complexing capability) contribute to anti-fouling properties, along with examining the impact of a continuous layer structure. In 2024, different coating materials forming continuous layers will be developed to assess their ability to resist fouling. Furthermore, adjusting the amount of functional groups will be tried to determine how changes affect the anti-fouling performance of membrane distillation.
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| 次年度使用額が生じた理由 |
The budget for this fiscal year was lower than planned because the desired pump delivery was postponed. As a result, the budget for the pump and related consumables was shifted to the next fiscal year.
In the upcoming fiscal year, the remaining budget will be combined with next year's allocation. An additional membrane distillation evaluation setup will be built for control experiments.
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