教師資料查詢 | 類別: 期刊論文 | 教師: 黃國楨 Hwang, Kuo-Jen (瀏覽個人網頁)

標題:Cross-flow microfiltration of submicron microbial suspension
學年90
學期1
出版(發表)日期2001/12/01
作品名稱Cross-flow microfiltration of submicron microbial suspension
作品名稱(其他語言)
著者黃國楨; Hwang, Kuo-jen; Yu, Yi-hsuan; Lu, Wei-ming
單位淡江大學化學工程與材料工程學系
出版者Amsterdam: Elsevier BV
著錄名稱、卷期、頁數Journal of membrane science 194(2), pp.229-243
摘要The mechanism of cross-flow microfiltration of submicron microbes is studied. Experiments are carried out using pseudomonas suspensions. The effects of operating conditions on the filtration performance are discussed. The results show that the filtration rates increase with increasing the cross-flow velocity, while decrease with increasing the filtration pressure. The Brownian dynamic simulation method is adopted for simulating the trajectories of microbes in cross-flow microfiltration. The deposition flux of microbes on the membrane surface can then be estimated from the simulated trajectories. Based on the continuity equation of cake compression and Kozeny equation, a dynamic analysis method is developed for simulating the distributions of local cake properties, such as porosity and specific filtration resistance in the filter cake. The deformation of microbes, the area contact between microbes and the creeping effect of cake compression are taken into consideration. The simulated values of average cake properties agree with the experimental data. It can be found that a skin layer controlled the filtration rate will form next to the membrane surface. Although the thickness of the skin layer is only about 10% of the whole cake, it plays the major role on the filtration resistance. Increasing the filtration pressure results in more compact skin layer; therefore, a lower filtration rate is obtained. Moreover, a higher cross-flow velocity will results in a thinner but more compact cake, a higher filtration rate can be given.
關鍵字Cross-flow microfiltration; Submicron particles; Microbe; Particle migration; Deformable particles; Bioseparation
語言英文
ISSN0376-7388
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者
審稿制度
國別荷蘭
公開徵稿
出版型式紙本
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