Effect of Membrane Pore Size on the Particle Fouling in Membrane Filtration
學年 97
學期 1
出版（發表）日期 2008-12-01
作品名稱 Effect of Membrane Pore Size on the Particle Fouling in Membrane Filtration
作品名稱（其他語言）
著者 黃國楨; Hwang, Kuo-jen; Liao, Chien-yao; Tung, Kuo-lun
單位 淡江大學化學工程與材料工程學系
出版者 Elsevier
著錄名稱、卷期、頁數 Desalination 234(1-3), pp.16-23
摘要 The effects of membrane pore size and operating conditions on the particle fouling in “dead-end” microfiltration are studied by use of membrane blocking models. Two track-etched membranes (Isopore® membrane) with the mean pore diameters of 0.2 and 0.4 μm, respectively, are used as the filter media to filter 0.15 μm polymethyl methacrylate (PMMA) particles. A blocking chart is established for relating the operating conditions and the particle fouling for the testing materials. The major factors affecting the blocking index, particle accumulation and filtration flux, are discussed thoroughly. The blocking index varies gradually at the initial period of filtration, keeps at ca. 0.5 for a while and then suddenly drops to zero at a critical condition. The blocking index for 0.4 μm membrane is always larger than that for 0.2 μm membrane under the same filtration pressure and filtration flux due to more severe membrane blocking. The critical point at which the filtration transforms from membrane blocking to cake filtration occurs at a lower filtration flux or a lower particle accumulation for the membrane with larger pore size or under lower filtration pressure. The normalized resistance coefficient can be correlated to a unique function of blocking index under various operating conditions and for different membranes.
關鍵字 Microfiltrationc;Particle fouling;Blocking models;Membrane pore size
語言 en
ISSN 0011-9164
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度 否
國別 NLD
公開徵稿
出版型式 ,紙本
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