Effects of cake collapse caused by deposition of fractal aggregates on pressure drop during ceramic filtration
发布时间：2021-09-04
点击次数：
影响因子：9.02
发表刊物：Environmental Science & Technology
摘要：A cake collapse model was developed by taking the combined effects of fractal dimension, relaxation ratio, coordination number, and aggregate diameter into consideration. The cake porosity including intraaggregate and interaggregate porosities was modeled successively by three typical coordination numbers (n = 6, 8, and 12). Accordingly, an inversion method made it possible to deduce the coordination number using the measured cake porosities, and the reverse-calculated value with minimum error and the corresponding relaxation ratios were applied as the parameters for the model. As a result, the profiles of intraaggregate and interaggregate porosities and cake porosity were respectively predicted in contrast to the integrated variation of the relaxation ratio and the fractal dimension. Furthermore, a comparison between the model predictions of the cake pressure drop gradients with and without aggregate compression was conducted to validate the presence of cake collapse. The results show that the predictions based on the proposed collapse model are in agreement with the experiments, and the coordination number is one of the key factors that must be incorporated into the cake collapse models.
合写作者：Xian-Xun Wei, Hong-Liang Gao, Qingbo Wen, Xiao-Peng Fan, Xin Shu; Guang-Ming Zeng, Wei Wei, Yun-Bo Zhai, Yi-De He, Shan-Hong Li
第一作者：Wei Zhang
论文类型：期刊论文
通讯作者：Cai-Ting Li
文献类型：J
卷号：45
期号：10
页面范围：4415-4421
是否译文：否
发表时间：2012-05-15
收录刊物：SCI