In this work, low-cost ceramic clay ultra-filtration membranes have been fabricated with a low sintering temperature, using natural aluminosilicate nanotubes (Halloysite) for the separation of macromolecular proteins. Tubular supports for membranes were prepared from quartz sand and calcite (natural materials) using the extrusion method. The effect of calcination temperatures on the structure of the membrane supports was studied in order to obtain the appropriate average pore size (APS) and porosity. Using the slip casting technique, two layers were deposited on the supports. The titania (TiO₂) intermediate layer and the Halloysite top-layer were sintered at 1050 and 580 °C, respectively. The membranes were characterized in terms of mechanical properties, porosity; pores size distribution, water permeability and scanning electron microscopy. Finally, capability for proteins separation (proteins used include: bovine serum albumin, egg albumin and casein), is evaluated.

在这项工作中，使用天然铝硅酸盐纳米管（Halloysite）分离大分子蛋白质，以较低的烧结温度制备了低成本的陶瓷粘土超滤膜。用挤压法从石英砂和方解石（天然材料）制备用于膜的管状载体。为了获得合适的平均孔径（APS）和孔隙率，研究了煅烧温度对膜载体结构的影响。使用粉浆浇铸技术，将两层沉积在载体上。二氧化钛（TiO ₂）中间层和埃洛石顶层分别在1050和580°C下烧结。膜的机械性能，孔隙率，表面粗糙度，抗渗性，抗渗性和抗渗性均得到了很好的表征。孔径分布，水渗透性和扫描电子显微镜。最后，评估蛋白质分离能力（所用蛋白质包括：牛血清白蛋白，蛋清蛋白和酪蛋白）。