With SiC as starting powder, waste fly ash as sintering additive and metal oxide as catalyst, mullite bonded SiC ceramic membrane was prepared at 1000°C using the conventional solid-state reaction method. Permeability parameters in both air and water flow tests were obtained using laboratory made set-up and the pure water permeability was measured at variable transmembrane pressures. The membrane exhibited excellent pure water flux of 5261 L.m⁻².h⁻¹.bar⁻¹ with open porosity of 44.7% and mean pore size of 3.7 μm. With this membrane a high oil removal efficiency of 91% was achieved from the kitchen wastewater having initial oil concentration of 1657 mg.L⁻¹. The method developed here is technologically benign and addressed prevention of environmental pollution by utilizing hazardous waste material for fabrication of porous SiC ceramic membrane at a reduced cost with good mechanical, permeability characteristics and wastewater filtration efficiency. Hence, the proposed method for SiC membranes has good sustainability and is scalable for oily wastewater treatment.

以碳化硅为起始粉体，废粉煤灰为烧结助剂，金属氧化物为催化剂，采用常规固相反应法，在1000℃条件下制备了莫来石结合碳化硅陶瓷膜。空气和水流测试中的渗透率参数是使用实验室制造的装置获得的，纯水渗透率是在可变跨膜压力下测量的。该膜表现出优异的纯水通量，为 5261 Lm ^-2 .h ^-1 .bar ^-1，开孔率为 44.7%，平均孔径为 3.7 μm。使用这种膜，从初始油浓度为 1657 mg.L ^-1的厨房废水中实现了 91% 的高除油效率. 这里开发的方法在技术上是良性的，并通过利用危险废料制造多孔 SiC 陶瓷膜以降低成本来防止环境污染，具有良好的机械、渗透特性和废水过滤效率。因此，所提出的 SiC 膜方法具有良好的可持续性，并且可扩展用于含油废水处理。