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:Interpretation of Particle Fouling in Submerged Membrane Filtration by Blocking Models
學年97
學期2
出版(發表)日期2009/03/01
作品名稱Interpretation of Particle Fouling in Submerged Membrane Filtration by Blocking Models
作品名稱(其他語言)
著者黃國楨; Hwang, Kuo-jen; 陳豐富; Chen, Fung-fu
單位淡江大學化學工程與材料工程學系
出版者臺北縣淡江大學
著錄名稱、卷期、頁數淡江理工學刊=Tamkang journal of science and engineering 12(1)頁9-16
摘要The particle fouling in a submerged membrane filtration system is analyzed by use of membrane blocking models. Two kinds of ceramic membranes made of ZrO2-TiO2, K-04 and K-06, are used in experiments. Their mean pore sizes on the outer surfaces are 8 and 5 m, respectively. The values of blocking index under various filtration pressures are calculated and discussed. At the initial period of a filtration, the membrane internal blocking is dominant, and the blocking index decreases quickly. The index then suddenly drops to zero at a critical condition and keeps invariably thereafter. The boundary between membrane blocking and particle bridging conditions can be grasped by this blocking index analysis. Membrane blocking occurs only under higher filtration flux or less particle accumulation, while a filter cake may be formed to the contrary conditions. To compare the filtration performances of used membranes, membrane K-04 results in more severe membrane blocking at the initial period of filtration because of more large nominal pores. However, more particles can be continuously held up in the large pores of membrane K-06 due to a little wider pore size distribution and its higher internal porosity. This study provides a useful method to understand the variation of each filtration resistance source during filtration. An increase in filtration pressure leads both resistances due to membrane blocking and cake formation to be increased, as a result, causes to a decrease in the filtration flux. The agreement between calculated filtration resistances and experimental data demonstrates the reliability of the proposed method.
關鍵字Membrane Filtration;Particle Fouling;Microfiltration;Blocking Models;Filtration Resistance
語言英文(美國)
ISSN1560-6686
期刊性質國內
收錄於EI;
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式,紙本
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