Effect of Gas-Liquid Flow Pattern on Air-Sparged Cross-Flow Microfiltration of Yeast Suspension
學年 98
學期 1
出版(發表)日期 2009-08-01
作品名稱 Effect of Gas-Liquid Flow Pattern on Air-Sparged Cross-Flow Microfiltration of Yeast Suspension
作品名稱(其他語言)
著者 Hwang, Kuo-Jen; Hsu, Chin-En
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 Chemical Engineering Journal 151(1-3), pp.160-167
摘要 Effect of gas–liquid flow pattern on the performance of air-sparged cross-flow microfiltration of yeast suspension is studied. The pseudo-steady filtration flux and the cake properties under various operating conditions are measured and discussed. The shear stress acting on the membrane surface and the critical condition for particle deposition are analyzed theoretically based on hydrodynamic models. The cake mass is markedly reduced by increasing the wall shear stress. However, the average specific cake filtration resistance increases with increasing the wall shear stress due to more compact cake structure. The increase in the average specific filtration resistance of cake due to air-sparging is more significant in bubbly flows. Consequently, the filtration flux will be increased by air-sparging due to the cake reduction in slug flow microfiltration. However, a contrary result is obtained for bubbly flows due to the drastic increase in the average specific filtration resistance of cake. Therefore, a microfiltration operating under slug flow is more effective to enhance the filtration flux by air-sparging. In addition, the proposed model provides a method to quantitatively relate the filtration flux to operating parameters. The relationships are also strongly dependent on the gas–liquid flow pattern.
關鍵字 Cross-flow microfiltration; Air-sparging; Cake properties; Gas–liquid flow pattern; Bio-separation
語言 en
ISSN 1385-8947
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Hwang, Kuo-Jen
審稿制度
國別 NLD
公開徵稿
出版型式 紙本
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