Effect of Polysaccharide Concentration on the Membrane Filtration of Microbial Cells
學年 100
學期 1
出版（發表）日期 2012-01-01
作品名稱 Effect of Polysaccharide Concentration on the Membrane Filtration of Microbial Cells
作品名稱（其他語言）
著者 Hwang, Kuo-Jen; Tsai, Pei-Chun; Eiji Iritani; Nobuyuki Katagiri
單位 淡江大學化學工程與材料工程學系
出版者 Rochester: Rochester Institute of Technology * College of Applied Science and Technology
著錄名稱、卷期、頁數 Journal of Applied Science and Engineering 15(4), pp.323-332
摘要 Polysaccharides are frequently produced by microbial metabolism or lysis in fermentation broths or bioreactors. This substance often causes membrane filtration difficulty. The polysaccharide concentration effects on the microfiltration characteristics of microbial cells are discussed in this study. Yeast and dextran are used as typical microbial cell and polysaccharide samples. The results show that polysaccharides play important roles in filtration performance. The filter cake exhibits a more compact structure and much higher filtration resistance when more dextran molecules pack into the yeast cake structure. Some dextran molecules also adsorb onto the walls in membrane pores, reducing the pore size, resulting in membrane fouling. The filtration resistances due to filter cake and membrane internal fouling are analyzed using filtrate volume versus time experimental data. These resistances increase significantly with the filtration pressure and dextran concentration. The cake properties in constant pressure microfiltration of yeast-dextran mixtures with different compositions are also analyzed. An increase in dextran concentration leads to lower cake growth rate, lower cake porosity and much higher average specific cake filtration resistance.
關鍵字 Microfiltration;Membrane Filtration;Bio-Separation;Cake Properties
語言 en_US
ISSN 1939-8565
期刊性質 國外
收錄於 EI
產學合作
通訊作者 Hwang, Kuo-Jen
審稿制度 否
國別 USA
公開徵稿
出版型式 ,紙本
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