Recent progress on SiC membranes for high-efficient oil-water separation
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.
SiC membranesoil-in-water emulsion separationmicrostructure regulationsurface wettabili-ty
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