Modeling of relationship between water permeability and microstructure parameters of ceramic membranes
Modeling of relationship between water permeability and microstructure parameters of ceramic membranes
复制标题
陶瓷膜透水率与微观结构参数关系的建模
DOI：
10.1016/j.desal.2005.07.042
复制
发表时间：
2006-05-01
期刊：
影响因子：
9.9
通讯作者：
Xu, Nanping
中科院分区：
文献类型：
--
作者：
Li, Weixing;Xing, Weihong;Xu, Nanping
陶瓷膜通常被视为黑匣子，无助于解释膜过程的本质机理。改进了 Cannan-Kozeny (C-K) 和 Hagen-Poiseuille (H-P) 方程来预测陶瓷膜的透水性。因此，量化了陶瓷膜的微观结构参数（孔径、厚度和孔隙率）对纯水通量的影响。透水实验表明，假设膜层有颗粒堆积，与改进的C-K方程有良好的对应关系。该工作为理解陶瓷膜的分离机理提供了新的方法，也有助于制备性能良好的陶瓷膜。这项工作可能在过滤过程和膜的微观结构参数之间架起一座桥梁。
A ceramic membrane was generally regarded as a black box, which was useless to explain the essential mechanism of the membrane process. The Cannan-Kozeny (C-K) and Hagen-Poiseuille (H-P) equations were improved to predict water permeability of ceramic membranes. Therefore, the effects of microstructure parameters (pore size, thickness and porosity) of ceramic membranes on pure water flux were quantified. The water permeability experiments showed good correspondence with the improved C-K equation assuming that the membrane layer had accumulated particles. This work provides a new method to understand the separation mechanism of ceramic membranes and was also useful for preparing ceramic membranes with good performance. This work may build a bridge between the filtration process and microstructure parameters of membranes.