出版日期：2002-11-01 00:00:00

著者：鄭東文; Cheng, Tung-wen; Huang, Cheng-yang

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：Journal of membrane science 209(2), pp.485-492

摘要：The characteristics of the rejected-solute layer of ultrafiltration were investigated in a dead-end experimental apparatus with sudden reduction of filtration area. The aqueous solution of dextran T70 and T500 were ultrafiltrated in the flat membrane module with various inclination angles. The operating parameters of experiments included the inclination angles of the membrane, transmembrane pressures, compositions of solution and the membrane cut-off. Based on the conventional cake filtration theory, the filtration characteristics (the porosity and specific resistance of the rejected-solute layer) can be obtained from the flux data. Experimental results indicates that porosity of the gel-cake layer decreases while the specific resistance increases with the increase in the transmembrane pressure. The mixture solution has a larger specific resistance than a single-solute solution. The filtration under 90° inclination has a larger porosity than that under 0 or 180° inclination, and the operation under 0° inclination has a larger specific resistance of the gel-cake. Using a large molecular weight cut-off (MWCO) membrane will form a more compact gel-cake than that using a small MWCO one.

關鍵字：Ultrafiltration;Membrane inclination;Porosity;Specific resistance

語言：en

ISSN：0376-7388

期刊性質：國內

審稿制度：否

國別：TWN

出版型式：電子版