Guembe-García Marta, Utzeri Gianluca, Valente Artur J M, Ibeas Saturnino, Trigo-López Miriam, García Jose Miguel, Vallejos Saul
Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain.
CQC-IMS, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.
J Hazard Mater. 2024 Sep 5;476:135006. doi: 10.1016/j.jhazmat.2024.135006. Epub 2024 Jun 24.
Water pollution from industrial or household waste, containing dyes from the textile industry, poses a significant environmental challenge requiring immediate attention. In this study, we have developed a crosslinked-smart-polymer film based on 2-(dimethylamino)ethyl methacrylate copolymerized with other hydrophilic and hydrophobic commercial monomers, and its efficacy in removing 21 different textile dyes was assessed. The smart polymer effectively interacts with and adsorbs dyes, inducing a noticeable colour change. UV-Vis spectroscopy analysis confirmed a removal efficiency exceeding 90 % for anionic dyes, with external diffusion identified as the primary influencing factor on process kinetics, consistent with both pseudo-first-order kinetics and the Crank-Dual model. Isothermal studies revealed distinct adsorption behaviors, with indigo carmine adhering to a Freundlich isotherm while others conformed to the Langmuir model. Permeation and fluorescence analyses corroborated isotherm observations, verifying surface adsorption. Significantly, our proof-of-concept demonstrated the resilience of the smart-film to common fabric softeners and detergents without compromising adsorption capacity. Additionally, the material exhibited reusability (for at least 5 cycles), durability, and good thermal and mechanical properties, with T and T values of 265 °C and 342 °C, respectively, a Tg of 168 °C, and a water swelling percentage of 54.3 %, thus confirming its stability and suitability for industrial application. ENVIRONMENTAL IMPLICATION: Dyes released during laundry processes should be classified as "hazardous materials" owing to their significant toxicity towards aquatic organisms, with the potential to disrupt ecosystems and harm aquatic biodiversity. This paper discusses the development of a novel acrylic material in film form, engineered to extract toxic anionic dyes. This study directly contributes to mitigating the environmental impact associated with the fashion industry and the domestic use of textiles. It can be implemented on both an industrial and personal scale, thereby encouraging more sustainable practices and promoting collaborative citizen science efforts towards.
来自工业或家庭废物的水污染,其中含有纺织工业的染料,这对环境构成了重大挑战,需要立即予以关注。在本研究中,我们基于甲基丙烯酸2-(二甲氨基)乙酯与其他亲水性和疏水性商业单体共聚,开发了一种交联智能聚合物薄膜,并评估了其去除21种不同纺织染料的效果。这种智能聚合物能有效地与染料相互作用并吸附染料,导致明显的颜色变化。紫外-可见光谱分析证实,阴离子染料的去除效率超过90%,外部扩散被确定为影响过程动力学的主要因素,这与伪一级动力学和克兰克-对偶模型均相符。等温线研究揭示了不同的吸附行为,靛蓝胭脂红符合弗伦德里希等温线,而其他染料符合朗缪尔模型。渗透和荧光分析证实了等温线观察结果,验证了表面吸附。值得注意的是,我们的概念验证表明,这种智能薄膜对常见的织物柔软剂和洗涤剂具有耐受性,且不影响吸附能力。此外,该材料具有可重复使用性(至少5个循环)、耐久性以及良好的热性能和机械性能,其热分解温度T和T分别为265℃和342℃,玻璃化转变温度Tg为168℃,水溶胀率为54.3%,从而证实了其稳定性和工业应用适用性。环境影响:洗衣过程中释放的染料因其对水生生物具有显著毒性,有可能破坏生态系统并损害水生生物多样性,应被归类为“有害物质”。本文讨论了一种新型丙烯酸薄膜材料的开发,该材料旨在提取有毒阴离子染料。本研究直接有助于减轻与时尚产业和家庭纺织品使用相关的环境影响。它可以在工业和个人层面实施,从而鼓励更可持续的做法,并促进公民科学的合作努力。
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