Key Laboratory of Bio-Based Polymeric Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Bio-Based Polymeric Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China.
Int J Biol Macromol. 2024 Nov;279(Pt 2):135163. doi: 10.1016/j.ijbiomac.2024.135163. Epub 2024 Aug 31.
The preparation of stable and efficient cellulose-based oil/water separation membranes is of great significance in solving the problem of industrial oily wastewater. Herein, rod-like hydroxyapatite (HAP) modified microfibrillated celluloses (MFCs) are used to form the fibrous framework to produce a microporous PDMS-MFC-HAP membrane. The membrane shows good superhydrophobicity with a water contact angle of 151.6°. It exhibits the oil-water separation performance for various water-in-oil emulsions. The separation flux of the membrane is up to 3665.3 L·m·h·bar under 0.5 bar pressure with a separation efficiency of over 99.6 %. The PDMS-MFC-HAP membrane could maintain a high separation efficiency of 98.6 % after 20 cycles. This study provides a simple and effective method to fabricate cellulose-based superhydrophobic membranes, which have a greater potential to achieve oil-water separation for oily wastewater treatment with high efficiency.
制备稳定、高效的纤维素基油水分离膜对于解决工业含油废水问题具有重要意义。本文采用棒状羟基磷灰石（HAP）改性微纤化纤维素（MFC）形成纤维骨架，制备了具有微孔结构的聚二甲基硅氧烷- MFC- HAP 膜。该膜具有良好的超疏水性，水接触角为 151.6°。它对各种油包水乳液表现出良好的油水分离性能。在 0.5 巴压力下，膜的分离通量高达 3665.3 L·m·h·bar，分离效率超过 99.6%。PDMS-MFC-HAP 膜经过 20 次循环后仍能保持 98.6%的高分离效率。本研究为制备纤维素基超疏水膜提供了一种简单有效的方法，对于高效处理含油废水的油水分离具有更大的应用潜力。
