Considering the environmental impact and health risks caused by oily wastewater in the petrochemical industry, it is crucial to develop more efficient separation techniques than traditional methods, such as membrane separation, for treating stable emulsions enriched with natural surfactants. This study investigated the preparation of dense cellulose acetate membranes from a low-cost biomass precursor (Luffa cylindrica) and their modification with graphene oxide (GO) and TiO₂ nanoparticles, aiming to obtain a polymeric nanocomposite with good flux characteristics and selectivity for the treatment of oil/water emulsions. The materials obtained were characterized using techniques such as X-ray diffraction, nuclear magnetic resonance spectroscopy, infrared absorption spectroscopy, along with optical and scanning electron microscopy, among others. The membranes were prepared by the casting technique and modified with the above-mentioned nanostructured materials. Flux analyses with petroleum emulsion revealed that membranes modified with GO and TiO₂ nanoparticles showed significant improvements in antifouling resistance compared to unmodified membranes. These enhanced properties highlight the potential of modified cellulose acetate membranes for application in industrial wastewater treatment.

中文翻译：

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TiO2/氧化石墨烯改性生物质衍生的醋酸纤维素膜用于水包油乳化处理


考虑到石化行业含油废水对环境的影响和健康风险，开发比传统方法（如膜分离）更有效的分离技术来处理富含天然表面活性剂的稳定乳化液至关重要。本研究研究了以低成本生物质前驱体 （Luffa cylindrica） 制备致密醋酸纤维素膜及其用氧化石墨烯 （GO） 和 TiO₂ 纳米颗粒进行改性，旨在获得一种具有良好的通量特性和选择性的聚合物纳米复合材料，用于处理油/水乳液。使用 X 射线衍射、核磁共振波谱、红外吸收光谱以及光学和扫描电子显微镜等技术对获得的材料进行表征。膜采用流延技术制备，并采用上述纳米结构材料进行改性。石油乳液的助焊剂分析表明，与未改性的膜相比，用 GO 和 TiO₂ 纳米颗粒改性的膜在抗污性方面表现出显着改善。这些增强的性能凸显了改性醋酸纤维素膜在工业废水处理中的应用潜力。