Abstract Ceramic microfiltration membranes (MF) with narrow pore size distribution and high permeability are widely used for the preparation of ceramic ultrafiltration membranes (UF) and in wastewater treatment. In this work, a whisker hybrid ceramic membrane (WHCM) consisting of a whisker layer and an alumina layer was designed to achieve high permeability and narrow pore size distribution based on the relative resistance obtained using the Hagen-Poiseuille and Darcy equations. The whisker layer was designed to prevent the penetration of alumina particles into the support and ensure a high porosity of the membrane, while the alumina layer provided a smooth surface and narrow pore size distribution. Mass transfer resistance is critical to reduce the effect of the membrane layers. It was found that the resistance of the WHCM depended largely on the alumina layer. The effect of the support and whisker layer on the resistance of the WHCM was negligible. This was consistent with theoretical calculations. The WHCM was co-sintered at 1000 °C, which resulted in a high permeability of ~ 645 L m−1 h−1 ;bar−1 and a narrow pore size distribution of ~ 100 nm. Co-sintering was carried out on a macroporous ceramic support (just needed one sintering process), which greatly reduced the preparation cost and time. The WHCM (as the sub-layer) also showed a great potential to be used for the fabrication of ceramic UF membranes with high repeatability. Hence, this study provides an efficient approach for the fabrication of advanced ceramic MF membranes on macroporous supports, allowing for rapid prototyping with scale-up capability.

中文翻译：

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通过共烧结工艺设计和制造具有窄孔径分布和高渗透性的晶须杂化陶瓷膜

摘要 具有窄孔径分布和高渗透性的陶瓷微滤膜（MF）被广泛用于制备陶瓷超滤膜（UF）和废水处理。在这项工作中，基于使用 Hagen-Poiseuille 和 Darcy 方程获得的相对电阻，设计了由晶须层和氧化铝层组成的晶须混合陶瓷膜 (WHCM)，以实现高渗透性和窄孔径分布。晶须层旨在防止氧化铝颗粒渗透到载体中并确保膜的高孔隙率，而氧化铝层提供光滑的表面和狭窄的孔径分布。传质阻力对于减少膜层的影响至关重要。发现WHCM的电阻很大程度上取决于氧化铝层。支撑层和晶须层对 WHCM 电阻的影响可以忽略不计。这与理论计算一致。WHCM 在 1000 °C 下共烧结，产生了 ~ 645 L m-1 h-1 ;bar-1 的高渗透率和 ~ 100 nm 的窄孔径分布。在大孔陶瓷载体上进行共烧结（只需一个烧结过程），大大降低了制备成本和时间。WHCM（作为子层）也显示出用于制造具有高重复性的陶瓷超滤膜的巨大潜力。因此，这项研究为在大孔支撑上制造先进的陶瓷微滤膜提供了一种有效的方法，允许具有放大能力的快速原型制作。