Cementitious membrane (CM) is a promising microfiltration membrane with low cost for raw materials and low energy consumption of non-sintering fabrication process. A novel carbon-cementitious microfiltration membrane (CCM) was fabricated with powdered activated carbon (PAC) as an additive based on CM, to solve the low mechanical strength of CM during multiple practical uses. While maintaining adequate pure water flux and porosity, the mechanical strength of the membrane was greatly improved to ensure the stability of the membrane in the filtration process. The bending strength of the CCM was 2–3 times higher than that of CM. 10 wt% CCM has the smallest critical pore size and optimal permeability, which was chosen to be the optimal PAC doping ratio. The X-ray diffraction and FT-IR results indicated that the addition of PAC did not change the mineral composition of cement hydration products, and the appropriate amount of PAC acted as a nucleation site and accelerated hydration. The effect of size effect on bending strength was more obvious with the decrease of membrane thickness. In the membrane adsorption experiments of benzophenone-4, nitrobenzene and p-chloronitrobenzene, the CCM exhibited prominent adsorption properties than CM. These results broaden the application scope of microfiltration membranes in water treatment process.

胶凝膜（CM）是一种很有前景的微滤膜，其原材料成本低，非烧结制造过程能耗低。以粉状活性炭（PAC）作为基于CM的添加剂制造了一种新型碳水泥微滤膜（CCM），以解决CM在多次实际使用中机械强度低的问题。在保持足够的纯水通量和孔隙率的同时，大大提高了膜的机械强度，保证了膜在过滤过程中的稳定性。CCM 的弯曲强度是 CM 的 2-3 倍。10 wt% CCM 具有最小的临界孔径和最佳渗透率，被选为最佳 PAC 掺杂比。X射线衍射和FT-IR结果表明，PAC的加入没有改变水泥水化产物的矿物组成，适量的PAC作为成核位点，加速了水化。随着膜厚的减小，尺寸效应对抗弯强度的影响更加明显。在二苯甲酮-4、硝基苯和对氯硝基苯，CCM 表现出比 CM 突出的吸附性能。这些结果拓宽了微滤膜在水处理过程中的应用范围。