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年度	106	專案性質	實驗性質
專案類別	研究專案	研究主題	整治
申請機構	國立中央大學	申請系所	生醫科學與工程學系
專案主持人	黃俊仁	職等/職稱	專案副教授
專案中文名稱	新式雙離子多層式油水分離模組應用於低密度非水相液體之回收
中文關鍵字	雙離子分子,油水分離濾網,油水分離器,非水相液體,油汙染處理
專案英文名稱	Multi-Tiered Zwitterionic Meshes and Module for High-Throughput Oil-Water Separating on Light Non Aqueous Phase Liquid (LNAPL)
英文關鍵字	Zwitterionic materials, superhydrophilicity, LNAPL, oil-water separation
執行金額	1,000,000元
執行期間	2017/1/9 至 2017/11/30
計畫中文摘要	本研究目的係將雙離子親水性表面抗油汙薄膜修飾技術應用於編織型多孔洞材料上以達成Light Non-aqueous Phase Liquid (LNAPL)分離與回收。將超親水兩性雙離子矽烷sulfobetaine silane (SBSi) 經縮合反應修飾於適當孔徑的金屬材不鏽鋼編織網/玻璃纖維上，然而，矽烷分子普遍存在易水解與縮合反應，在溶液中形成聚集與失活，這會降低矽烷材料在表面的接枝與修飾能力，所以，本期中報告的內容係調整SBSi的修飾條件，已達濾網的最佳油水分離功能。實驗中以X射線光電子能譜儀、全反射式霍氏轉換紅外光譜儀進行表面元素與官能基的鑑定分析; 以接觸角測定器進行表面能變化的分析; 以橢圓儀鑑定修飾薄膜厚度，將修飾效率與效能最佳化。實驗條件中，以水的含量、pH值、反應溫度與時間作為最佳化的參數。初步結果證實經SBSi修飾後17 μm孔徑的濾膜通透的柴油混和濾液的分離率可達99.5%以上，而常壓下的海水通透濾可達6.5 ×107 L/m2•h•bar。經實驗更證實了修飾物在UV照射、高熱環境下仍有良好的穩定度。而藉由調控孔徑與模組化設計的油水分離設備，經計算可以達到每小時11公噸的處理量。本計畫將進一步最佳化SBSi修飾的濾網，結合API油水分離器中形成一個模組，以分離廢液中固體雜質與成為自動化，以應用於加油站…等之小型油水分離器。總結，此雙離子油水分離器對LNAPL油汙染的水質具有高分離率、高水量通透濾、高修飾穩定性以及環境無汙染等優點。本計畫最終將設計一低耗能、高效率且可模組化的LNAPL油水分離設備，對於LNAPL影響的環保議題提出有效的解決方案。
計畫英文摘要	In this midterm report, we prepared and optimized an oil-water filtration mesh, which was modified with superhydrophilic zwitterionic sulfobetaine silane (SBSi) for high throughput oil-water separation. Identification of SBSi-coated meshes was performed by X-ray photoelectron spectroscopy and attenuated total reflection-Fourier transform infrared spectroscopy. Surface energy and thickness observation were carried out with contact angle goniometer and ellipsometry. The disadvantages of the silanes for surface modification is that silane tends to aggregate in solution and form large sphere to precipitate onto surfaces. This is mainly due to fast hydrolysis and condensation of silane functional groups, which leads to deterioration of efficiency of surface modification. The silane is susceptible to the experimental conditions, such as the pH, water content, experimental temperature and time. The optimal oil recovery rate for the oil−water mixtures reached >99.5% when using the SBSi-coated meshes with a pore size of 17 μm. More importantly, the water flux with modified meshes achieved 6.5 × 107 L/m2•h•bar, enabling gravity-driven and energy-saving separation. The stability test showing great stability of the covalent coating of SBSi under explosion of UV wavelength 365 nm for 144 hours and so period of time put in 60°C oven. The effectiveness of the zwitterionic meshes for the oil-water separation is due to the superhydrophilicity of SBSi coatings to avoid the penetration of organic fluids through the meshes. As a result, we apply the modified meshes to further accomplish the design of the zwitterionic oil-water separation device incorporated with a API device by optimizing and automizing the configuration for addressing the LNAPL pollution in the water body. The device in this study will be implemented in the gas station for in-field application. Consequently, we aim to develop the module of the zwitterionic oil-water separation device for removing LNAPLs in an effective, low-cost and high-performance way.