Amino Acid-Based Hydrophobic Cryogels for Efficient Methylene Blue Removal: A Reusable and Eco-Friendly Approach to Dye-Contaminated Wastewater Treatment.

IF 5 3区化学 Q1 POLYMER SCIENCE

Gels Pub Date : 2025-05-30 DOI:10.3390/gels11060411

Merve Sofuoğlu, Ali Ender Kuyucu, Kadir Erol, Faruk Gökmeşe

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Abstract

The release of synthetic dyes into the environment through industrial wastewater represents a significant environmental concern. In this study, a hydrophobic cryogel, Poly(2-hydroxyethyl methacrylate-N-methacryloyl-L-phenylalanine), was synthesized and employed for the efficient removal of methylene blue from aqueous solutions. The cryogel exhibited a surface area of 6.834 m²/g and a water retention capacity of 218.6%. Adsorption experiments conducted under various conditions revealed a high adsorption capacity of 1304.6 mg/g for MB. Thermodynamic analyses indicated that adsorption occurs spontaneously and follows a monolayer adsorption model. The adsorption capacity increased with temperature and ionic strength, confirming that hydrophobic forces predominantly drive the interaction. Reusability tests showed that the cryogel maintained its adsorption efficiency over five consecutive adsorption-desorption cycles, with a desorption efficiency of up to 98%. These findings demonstrate that Poly(HEMA-MAPA) cryogel is a practical, reusable, and eco-friendly adsorbent for removing methylene blue, a common textile dye pollutant, from water systems.

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高效去除亚甲基蓝的氨基酸基疏水冷冻机：染料污染废水处理的可重复使用和环保方法。

合成染料通过工业废水释放到环境中是一个重大的环境问题。本研究合成了一种疏水低温凝胶聚（2-羟乙基甲基丙烯酸酯- n -甲基丙烯酰- l-苯丙氨酸），并将其用于水溶液中亚甲基蓝的高效去除。该低温凝胶的表面积为6.834 m2/g，保水率为218.6%。在各种条件下的吸附实验表明，吸附量高达1304.6 mg/g。热力学分析表明，吸附是自发的，符合单层吸附模型。吸附量随温度和离子强度的增加而增加，证实了疏水力主要驱动相互作用。重复使用试验表明，该低温凝胶在连续5次吸附-解吸循环中保持了良好的吸附效率，解吸效率高达98%。这些研究结果表明，聚（HEMA-MAPA）低温凝胶是一种实用的、可重复使用的、环保的吸附剂，用于去除水系统中常见的亚甲基蓝（一种常见的纺织染料污染物）。

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

Gels POLYMER SCIENCE-

CiteScore

4.70

自引率

19.60%

发文量

707

审稿时长

11 weeks

期刊介绍： The journal Gels (ISSN 2310-2861) is an international, open access journal on physical (supramolecular) and chemical gel-based materials. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the maximum length of the papers, and full experimental details must be provided so that the results can be reproduced. Short communications, full research papers and review papers are accepted formats for the preparation of the manuscripts. Gels aims to serve as a reference journal with a focus on gel materials for researchers working in both academia and industry. Therefore, papers demonstrating practical applications of these materials are particularly welcome. Occasionally, invited contributions (i.e., original research and review articles) on emerging issues and high-tech applications of gels are published as special issues.