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Designing Hydrogel-Modified Cellulose Triacetate Membranes with High Flux and Solute Selectivity for Forward Osmosis
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-11-11 , DOI: 10.1021/acs.iecr.0c03977 Jia Ding 1 , Gholamreza Vahedi Sarrigani 1 , Hashim Jalil Khan 1 , Haowen Yang 1 , Nur Anis Sohimi 1 , Nur Zaqira Izzati Sukhairul Zaman 1 , Xia Zhong 1 , Anne Mai-Prochnow 1 , David K. Wang 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-11-11 , DOI: 10.1021/acs.iecr.0c03977 Jia Ding 1 , Gholamreza Vahedi Sarrigani 1 , Hashim Jalil Khan 1 , Haowen Yang 1 , Nur Anis Sohimi 1 , Nur Zaqira Izzati Sukhairul Zaman 1 , Xia Zhong 1 , Anne Mai-Prochnow 1 , David K. Wang 1
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Forward osmosis (FO) has attracted intensive attention in liquid separation because it is less energy-consuming as compared to the pressure-driven separation processes, but the lack of a high-performance membrane limits its application. In this paper, novel FO membranes were fabricated by generating three methacrylate-based hydrogels (methyl-, ethyl-, and butyl-methacrylate) on the CTA surface via the solution drop-casting method. The characterization results show that the hydrogels were chemically crosslinked with the porous CTA substrate and improved the hydrophilicity of membranes. As a result, all the hydrogel-modified CTA membranes showed a higher pure water flux than the bare CTA and commercial HTI-CTA membranes. The modified FO membranes also exhibited higher solute selectivity and salt retention, as the hydrogels acted as the active barrier. In addition, antibacterial study demonstrated that hydrogel modifications conferred antibacterial properties to the CTA membranes, which is indicative of a better antifouling feature. The outstanding separation performance indicates that the hydrogel-modified CTA membranes have great potential for the industrial application.
中文翻译：
设计具有高通量和溶质选择性的水凝胶修饰的三乙酸纤维素膜，用于正向渗透
正向渗透（FO）在液体分离中引起了广泛的关注，因为与压力驱动的分离方法相比，它的能耗更少，但是缺乏高性能的膜限制了其应用。在本文中，通过溶液滴铸法在CTA表面上生成三种基于甲基丙烯酸酯的水凝胶（甲基丙烯酸乙酯，甲基丙烯酸乙酯和甲基丙烯酸丁酯）制备了新型FO膜。表征结果表明，水凝胶与多孔CTA基质化学交联，并改善了膜的亲水性。结果，所有水凝胶改性的CTA膜均比裸露的CTA和商业HTI-CTA膜显示出更高的纯净水通量。改性的FO膜还具有更高的溶质选择性和盐分保留能力，因为水凝胶充当了主动屏障。另外，抗菌研究表明，水凝胶改性赋予CTA膜以抗菌性能，这表明其具有更好的防污功能。出色的分离性能表明，水凝胶改性的CTA膜具有巨大的工业应用潜力。
更新日期：2020-11-25
中文翻译：
设计具有高通量和溶质选择性的水凝胶修饰的三乙酸纤维素膜，用于正向渗透
正向渗透（FO）在液体分离中引起了广泛的关注，因为与压力驱动的分离方法相比，它的能耗更少，但是缺乏高性能的膜限制了其应用。在本文中，通过溶液滴铸法在CTA表面上生成三种基于甲基丙烯酸酯的水凝胶（甲基丙烯酸乙酯，甲基丙烯酸乙酯和甲基丙烯酸丁酯）制备了新型FO膜。表征结果表明，水凝胶与多孔CTA基质化学交联，并改善了膜的亲水性。结果，所有水凝胶改性的CTA膜均比裸露的CTA和商业HTI-CTA膜显示出更高的纯净水通量。改性的FO膜还具有更高的溶质选择性和盐分保留能力，因为水凝胶充当了主动屏障。另外，抗菌研究表明，水凝胶改性赋予CTA膜以抗菌性能，这表明其具有更好的防污功能。出色的分离性能表明，水凝胶改性的CTA膜具有巨大的工业应用潜力。
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