摘要
碳化硅膜具有优异的耐腐蚀性、高温稳定性、表面亲水性和独特的电负性,在含油废水处理方面极具应用前景.碳化硅膜的表面微结构不仅直接决定着油水分离精度,也影响着表面润湿性和油水分离效率.碳化硅膜的微结构调控与优化是提高油水分离效率的重要途径.本文回顾和梳理了碳化硅膜在油水乳液分离方面的研究进展和制备技术的发展历程;重点综述了碳化硅膜微结构和表面性质调控的方法和策略及其对油水分离性能的影响;面向油水分离的应用体系,对碳化硅膜的低成本制备和微结构调控技术进行了展望,为油水分离的降本增效和膜材料的绿色制造提供重要参考.
Abstract
Owing to the excellent chemical corrosion resistance,high temperature stability,surface hydrophilicity and unique surface charge,silicon carbide(SiC)membranes show great potential in oily wastewater treatment.The microstructure of SiC membranes not only determine the separation efficiency but also closely correlate to the surface wettability.Therefore,manipulating the microstructure of SiC membranes by regulating the preparation processing parameters would be an effective pathway to further improve the separation efficiency in oily wastewater.In this review,the recent progress on SiC membranes for oil-in-water(O/W)emulsion separation is briefed.Then,the methods and pathways to tune the microstructure and surface characteristics of SiC membranes are summarized,accompanying with the potential impact on the separation efficiency of O/W emulsion.Finally,the perspectives of SiC membranes for O/W emulsion separation,especially the pathways to the microstructure regulation and low-coat fabrication are provided,aiming at the cost-efficient,high-efficiency and green fabrication.
维普
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