过滤(数学)
结垢
阻塞(统计)
膜污染
膜
化学
色谱法
焊剂(冶金)
错流过滤
化学工程
数学
生物化学
工程类
统计
有机化学
作者
Lei Hou,Zhan Wang,Peng Song
标识
DOI:10.1016/j.memsci.2017.08.013
摘要
It is difficult but significant to describe the flux variation for the membrane filtration process with complex combined filtration mechanisms. In this paper, the steady membrane frontal area (K) was proposed to improve the predictive accuracy of cake-complete model for combined fouling mechanisms of complete blocking and cake filtration. Meanwhile, the transition point when the fouling mechanisms changed from combined complete blocking and cake filtration into individual cake filtration could also be analyzed under different conditions. The results showed that the predictions of the proposed model had good agreements with experimental data under different conditions for bovine serum albumin (BSA) solution. Meanwhile, the proposed combined model possess higher accuracy (relative error σ¯=1.83%) than cake filtration (σ¯=7.36%), complete blocking (σ¯=15.90%) and pore blockage-cake (σ¯=5.54%) model. Moreover, the transition point appeared earlier at higher pressure and concentration. And larger K was obtained at higher concentration and lower pressure which represented less fouling caused by complete blocking. In addition, the application of the proposed model was validated not only by different suspensions but also by different membranes.
科研通智能强力驱动
Strongly Powered by AbleSci AI