Anorthite-based highly porous membranes were successfully produced using calcined oyster shell to enhance the pore network. The calcined oyster shells produce CaO responsible for the crystallisation of gehlenite and anorthite at relatively low temperature. While the crystallisation produced nano and meso size of intergranular pores, vitrification of feldspar is responsible for development of the capillary porosities. The increasing sintering temperature from 1200 °C to 1300 °C implies the increase in average pores radius from 1.2 μm to 14.3 μm due to the formation of spherical pores from vitrification. The combination of different class of porosities in the matrices results in the interconnection with improvement of the permeability of the porous network. Porosity, permeability and chemical stability were improved with 20 wt.% of calcined oyster shell addition allowing the possible development of high strength porous network which is promising for the membranes support and other applications including liquid separation as well as liquid filtration where high pressure is used.

使用煅烧的牡蛎壳来增强孔网络，成功生产出基于钙长石的高度多孔膜。煅烧的牡蛎壳产生CaO，CaO在相对较低的温度下使菱锰矿和钙长石结晶。尽管结晶产生了晶间孔的纳米尺寸和中观尺寸，但长石的玻璃化却导致了毛细管孔隙的发展。烧结温度从1200°C升高到1300°C，这意味着由于玻璃化形成球形孔，平均孔半径从1.2μm增加到14.3μm。基质中不同类别的孔隙度的组合导致相互连接，并改善了多孔网络的渗透性。孔隙率，渗透率和化学稳定性提高了20 wt％。