Enhancing the efficiency of photocatalytic membrane reactors for textile effluent remediation

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-05-26 DOI:10.1016/j.seppur.2025.133714

Saurav Bhattacharyya , Marc Heran , Sudip Chakraborty , Vincenza Calabro , Catia Algieri

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引用次数: 0

Abstract

The textile industry is a major global water consumer and so a significant contributor of wastewater containing recalcitrant pollutants, including azo dyes, which are difficult to degrade and pose severe environmental risks. This study explored an innovative photocatalytic membrane reactor that utilizes polyethersulfone membranes embedded with titanium dioxide dispersed on graphene oxide nanosheets (TiO₂-GO nanocomposites) to effectively treat real textile wastewater. The synergistic integration of GO and TiO₂ can enhance photocatalytic activity and significantly improve the properties of the pristine PES membrane. The membranes were characterized using XRD, SEM-EDX, FTIR, and Raman spectroscopy, revealing a successful integration of TiO₂-GO nanocomposites. Photocatalytic membranes exhibited better mechanical properties and antifouling performance compared to pristine PES membranes. The novel double-sided UV irradiation approach improved photocatalytic efficiency, achieving 92 % and 96 % decolorization for synthetic and real wastewater, respectively. In addition, the COD removal was 56 % and 78 % for synthetic and real matrices. The photocatalytic membranes exhibited reusability and minimal fouling, highlighting their potential for sustainable wastewater treatment. This study contributes significantly to advancing the use of photocatalytic membranes for industrial-scale remediation of textile wastewater.

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提高光催化膜反应器处理纺织废水的效率

纺织业是全球用水大户，因此是废水的重要贡献者，废水中含有难降解的污染物，包括偶氮染料，这些污染物难以降解，并构成严重的环境风险。本研究探索了一种新型光催化膜反应器，该反应器利用分散在氧化石墨烯纳米片上的聚醚砜膜包埋二氧化钛（TiO2-GO纳米复合材料）来有效处理真实纺织废水。氧化石墨烯和TiO2的协同整合可以增强光催化活性，显著改善PES原始膜的性能。利用XRD、SEM-EDX、FTIR和拉曼光谱对膜进行了表征，表明TiO2-GO纳米复合材料的成功集成。光催化膜具有较好的力学性能和防污性能。新型的双面紫外照射方法提高了光催化效率，对合成废水和真实废水的脱色率分别达到92%和96%。此外，合成基质和真实基质的COD去除率分别为56%和78%。光催化膜具有可重复使用性和最小的污染，突出了其可持续废水处理的潜力。该研究对推进光催化膜在纺织废水工业规模修复中的应用具有重要意义。

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

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.