教師資料查詢 | 類別: 期刊論文 | 教師: 曾琇瑱 Tseng Shio-jenn (瀏覽個人網頁)

標題:Ionic Separation Efficiency of a Novel Electric-Field-Assisted Membrane Module Comprising an Array of Microchannel Units
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學期
出版(發表)日期2007/03/15
作品名稱Ionic Separation Efficiency of a Novel Electric-Field-Assisted Membrane Module Comprising an Array of Microchannel Units
作品名稱(其他語言)
著者Hsu, Jyh-ping; Lin, S. H.; 曾琇瑱; Tseng, Shio-jenn; Su, A; Lee, D. J.; Chen, C. J.
單位淡江大學數學學系
出版者Elsevier
著錄名稱、卷期、頁數Journal of Colloid and Interface Science 307(2), pp.516-523
摘要The ionic separation efficiency of a novel membrane module comprising an array of microchannel units is analyzed. Under the Debye–Hückel approximation, we derive a semianalytical expression for the ionic separation efficiency. Analyses reveal that the effects of the size of the microchannel, the fixed charge density in the membrane layer, and the permittivity of the membrane layer on ionic separation efficiency depend strongly on the valence type of electrolyte in treated water. Under the condition of a symmetric electrolyte, the ionic separation efficiency is found to be about unity and unresponsive to variation of system parameters. If the valence of the cation is higher than that of the anion, the ionic separation efficiency is larger than unity, and decreases to unity as the size of the microchannel increases. In contrast, if the valence of the cation is lower than that of the anion, the ionic separation efficiency is smaller than unity and increases to unity as the size of the microchannel increases. Under the latter two conditions, the effects of both fixed charge density in the membrane layer and permittivity of the membrane layer on the ionic separation efficiency are found to be reversed.
關鍵字Microchannel unit;Charged membrane layer;Ionic separation efficiency;Debye–Hückel approximation;Valence type of electrolyte
語言英文(美國)
ISSN0021-9797
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