Department of Chemistry, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133203, Haryana, India.
Department of Chemistry, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133203, Haryana, India.
Chemosphere. 2024 Apr;353:141542. doi: 10.1016/j.chemosphere.2024.141542. Epub 2024 Feb 28.
The escalating global concern regarding antibiotic pollution necessitates the development of advanced water treatment strategies. This study presents an innovative approach through the fabrication and evaluation of a Polyethersulfone (PES) membrane adorned with GO-TiO nanocomposites. The objective is to enhance the removal efficiency of various antibiotics, addressing the challenge of emerging organic compounds (EOCs) in water systems. The nanocomposite membranes, synthesized via the phase inversion method, incorporate hydrophilic agents, specifically GO-TiO nanocomposites and Polyvinylpyrrolidone (PVP). The resultant membranes underwent comprehensive characterization employing AFM, EDS, tensile strength testing, water contact angle measurements, and FESEM to elucidate their properties. Analysis revealed a substantial improvement in the hydrophilicity of the modified membranes attributed to the presence of hydroxyl groups within the GO-TiO structure. AFM images demonstrated an augmentation in surface roughness with increasing nanocomposite content. FESEM images unveiled structural modifications, leading to enhanced porosity and augmented water flux. The pure water flux elevated from 0.980 L/m.h for unmodified membranes to approximately 6.85 L/m.h for membranes modified with 2 wt% nanocomposites. Membrane performance analysis indicated a direct correlation between nanocomposite content and antibiotic removal efficiency, ranging from 66.52% to 89.81% with 4 wt% nanocomposite content. Furthermore, the nanocomposite-modified membrane exhibited heightened resistance to fouling. The efficacy of the membrane extended to displaying potent antibacterial properties against microbial strains, including S. aureus, E. coli, and Candida. This study underscores the immense potential of GO-TiO decorated PES membranes as a sustainable and efficient solution for mitigating antibiotic contamination in water systems. The utilization of nanocomposite membranes emerges as a promising technique to combat the presence of EOC pollutants, particularly antibiotics, in water bodies, thus addressing a critical environmental concern.
全球对抗生素污染的日益关注需要开发先进的水处理策略。本研究提出了一种通过制造和评估聚醚砜（PES）膜与 GO-TiO 纳米复合材料的方法。目的是提高各种抗生素的去除效率，解决水体中新兴有机化合物（EOCs）的挑战。纳米复合材料膜通过相转化法合成，其中包含亲水剂，即 GO-TiO 纳米复合材料和聚乙烯吡咯烷酮（PVP）。通过原子力显微镜（AFM）、能谱（EDS）、拉伸强度测试、水接触角测量和 FESEM 对所得膜进行了全面表征，以阐明其性能。分析表明，由于 GO-TiO 结构中存在羟基，改性膜的亲水性有了很大提高。AFM 图像表明，随着纳米复合材料含量的增加，表面粗糙度增加。FESEM 图像揭示了结构的变化，导致多孔性增强和水通量增加。纯水通量从未改性膜的 0.980 L/m.h 升高到含有 2wt%纳米复合材料的膜的约 6.85 L/m.h。膜性能分析表明，纳米复合材料含量与抗生素去除效率之间存在直接相关性，纳米复合材料含量为 4wt%时，抗生素去除效率为 66.52%至 89.81%。此外，纳米复合材料改性膜对污染具有更高的抵抗力。该膜的功效还扩展到对包括金黄色葡萄球菌、大肠杆菌和念珠菌在内的微生物菌株显示出强大的抗菌性能。这项研究强调了 GO-TiO 修饰的 PES 膜作为减轻水系统中抗生素污染的可持续和高效解决方案的巨大潜力。纳米复合材料膜的使用是一种很有前途的技术，可以对抗水中的 EOC 污染物，特别是抗生素，从而解决了一个关键的环境问题。
