铜/谷氨酰胺共接枝在提高反渗透薄膜复合膜抗生物污染和脱盐性能方面的协同作用

IF 8.3 1区 工程技术 Q1 ENGINEERING, CHEMICAL Desalination Pub Date : 2024-10-15 DOI:10.1016/j.desal.2024.118202
Deepa Suresh , Pei Sean Goh , Woei Jye Lau , Jun Wei Lim , Mohd Sohaimi Abdullah , Be Cheer Ng , Ahmad Fauzi Ismail
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引用次数: 0

摘要

人们一直在努力通过物理或化学方法添加特定的功能基团来改善膜表面,从而最大限度地降低结垢倾向。本研究介绍了一种简便的接枝和沉积方法来提高薄膜复合聚酰胺反渗透膜(TFC PA RO)的性能。研究了 l-谷氨酰胺和纳米铜粒子在改变膜的物理化学性质和提高海水淡化性能方面的协同效应。l-谷氨酰胺改善了膜的亲水性,而 Cu 纳米粒子则提供了显著的抗菌特性,改善了膜的功能。研究结果表明,TFC-l-谷氨酰胺/Cu3 表现出最佳性能,在 1.5 兆帕工作压力下,水通量为 16.5 L.m-2 h-1,盐排斥率为 96.8%。由于 Cu NPs 的抗菌效果,TFC-l-谷氨酰胺/Cu3 膜对金黄色葡萄球菌和大肠杆菌均无致密菌落。被金黄色葡萄球菌和大肠杆菌污染的 TFC-l-glutamine/Cu3 膜的通量下降率最低,分别为 20% 和 25%。TFC-l-glutamine/Cu3 膜显示出良好的防污性能,对牛血清白蛋白(BSA)污垢的通量恢复比(FRR)为 95.2%。TFC-l-glutamine/Cu3 膜的铜浸出率低,≤3%,这表明它具有很高的稳定性。本研究中展示的改性策略为同时解决 TFC RO 膜的多个问题提供了可行的解决方案,从而有可能提高海水淡化的效率。
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The synergistic actions of copper/l-glutamine co-grafting in improving anti-biofouling and desalination performances of reverse osmosis thin film composite membrane
There have been ongoing efforts to improve membrane surfaces by adding specific functional groups through physical or chemical approaches to minimize fouling propensity. This study introduces a facile grafting and deposition approach to enhance the performance of thin film composite polyamide reverse osmosis (TFC PA RO) membrane. The synergistic effects of l-glutamine and Cu nanoparticles in altering the physico-chemical properties and improving desalination performances were investigated. The l-glutamine improved the hydrophilicity of membrane, while Cu NPs offered significant antibacterial characteristics to improve the functionality of membrane. The findings revealed that TFC-l-glutamine/Cu3 showed optimum performance with water flux of 16.5 L.m−2 h−1 and salt rejection of 96.8 % at an operating pressure of 1.5 MPa. The TFC-l-glutamine/Cu3 membrane exhibited an absence of dense colonies against both S. aureus and E. coli, on account of the antibacterial effectiveness of Cu NPs. The S. aureus- and E. coli-fouled TFC-l-glutamine/Cu3 membrane showed the lowest flux decline of 20 % and 25 % for, respectively. The TFC-l-glutamine/Cu3 membrane exhibited promising antifouling performance, with a flux recovery ratio (FRR) of 95.2 % for bovine serum albumin (BSA) foulants. The TFC-l-glutamine/Cu3 membrane exhibited a low copper leaching of ≤3 %, suggesting its high stability. The modification strategy demonstrated in this study provides a feasible solution to simultaneously address multiple issues of TFC RO membranes, which potentially leading to more efficient desalination.
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来源期刊
Desalination
Desalination 工程技术-工程:化工
CiteScore
14.60
自引率
20.20%
发文量
619
审稿时长
41 days
期刊介绍: Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.
期刊最新文献
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