Regulating the microstructure of microfiltration carbon membranes via SiC incorporation for emulsified oil removal from water

IF 3.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Research & Design Pub Date : 2025-09-13 DOI:10.1016/j.cherd.2025.09.021

Zhixue Lu, Yonghong Wu, Yantai Li, Bing Zhang

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引用次数: 0

Abstract

Membrane technology holds great promise for emulsified oil–water separation but is often limited by membrane fouling, inferior separation performance, and poor mechanical strength. In this study, silicon carbide (SiC) was incorporated into carbon membranes to optimize their microstructure and properties. The membranes were characterized using thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, and water contact angle measurements. The effects of SiC content, feed oil concentration, operating time, and transmembrane pressure on oil–water separation performance were systematically investigated. The results demonstrate that SiC incorporation effectively modulates the microstructure and enhances the hydrophilicity of carbon membranes. The highest porosity of 59.5 % was achieved at 15 wt% SiC loading. The optimized membrane exhibited a water flux of 1100.35 L⋅m⁻²⋅h⁻¹⋅bar⁻¹ and an oil rejection rate of 97.64 %, along with excellent antifouling properties, evidenced by a flux recovery ratio of 86 %.

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碳化硅掺入调控微滤碳膜微观结构对水中乳化油的去除

膜技术在乳化油水分离中具有广阔的应用前景，但膜污染、分离性能差、机械强度差等问题制约了膜分离技术的发展。本研究将碳化硅（SiC）掺入碳膜中，以优化其微观结构和性能。利用热重分析、傅里叶变换红外光谱、x射线衍射、扫描电镜和水接触角测量对膜进行了表征。系统考察了SiC含量、原料油浓度、操作时间和跨膜压力对油水分离性能的影响。结果表明，碳化硅的掺入有效地调节了碳膜的微观结构，提高了碳膜的亲水性。当SiC载荷为15 wt%时，孔隙率达到59.5% %。优化后的膜水通量为11000.35 L⋅m−2⋅h−1⋅bar−1，截油率为97.64 %，通量回收率为86 %，具有良好的防污性能。

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

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.