Amino acid-based nanoparticles-incorporated thin-film nanocomposite forward osmosis membranes for efficient desalination and heavy metal ions rejection

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2024-11-12 DOI:10.1016/j.desal.2024.118312

Arshad Bayrami , Mojtaba Bagherzadeh , Mojtaba Amini , Farzad Seidi

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引用次数: 0

Abstract

The current study explores potential applications of state-of-the-art thin-film nanocomposite forward osmosis (TFN-FO) membranes, modified with histidine-functionalized graphene quantum dots (His-GQDs) and MIP-202(Zr) nanoparticles (NPs), for sustainable desalination and heavy metal ions rejection. The porous and layered structure of the applied NPs, along with various hydrophilic functional groups on their surface, contribute to improving the fabricated membranes' ion/water separation performance. The successful preparation and incorporation of desired NPs into the polyamide layer was investigated using typical analytical methods. Under the common FO test conditions, the best-performing TFN-MQ₂ membrane displayed a water flux of 21.8 LMH, which was over 1.5 times greater than the water flux of blank TFC. Simultaneously, the selectivity was found to be approximately 1.7 times greater than that of the unmodified TFC membrane. Moreover, the optimal TFN-MQ₂ membrane exhibited superior rejection rates for Cu²⁺ ions (98.5 %) and Pb²⁺ ions (98.1 %), surpassing all other samples in heavy metal ion rejection. The findings of this study suggest that carefully choosing cost-efficient and eco-friendly nanofillers (such as amino acid-based NPs) can enhance the desalination performance of TFN-FO membranes and bolster their resistance to fouling and rejection of heavy metal ions. Not to mention, the overall costs of membrane production will be reduced.

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用于高效脱盐和重金属离子阻隔的氨基酸基纳米微粒包合薄膜纳米复合正渗透膜

本研究探讨了用组氨酸功能化石墨烯量子点（His-GQDs）和 MIP-202（Zr）纳米粒子（NPs）改性的最先进的薄膜纳米复合正渗透（TFN-FO）膜在可持续脱盐和重金属离子去除方面的潜在应用。所应用的 NPs 具有多孔和分层结构，其表面具有各种亲水官能团，有助于提高所制备膜的离子/水分离性能。我们使用典型的分析方法研究了所需 NPs 的成功制备和融入聚酰胺层的情况。在常见的 FO 测试条件下，性能最好的 TFN-MQ2 膜的水通量为 21.8 LMH，是空白 TFC 水通量的 1.5 倍以上。同时，选择性也比未改性的 TFC 膜高出约 1.7 倍。此外，最佳 TFN-MQ2 膜对 Cu2+ 离子（98.5%）和 Pb2+ 离子（98.1%）的抑制率也很高，在重金属离子抑制方面超过了所有其他样品。该研究结果表明，精心选择具有成本效益且环保的纳米填料（如氨基酸基 NPs）可提高 TFN-FO 膜的脱盐性能，并增强其抗污能力和重金属离子抑制能力。更不用说，还能降低膜生产的总体成本。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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.