Device Performance of a Tubular Membrane Dialyzer Incorporating Ultrafiltration Effects on the Dialysis Efficiency
學年 111
學期 2
出版（發表）日期 2023-05-28
作品名稱 Device Performance of a Tubular Membrane Dialyzer Incorporating Ultrafiltration Effects on the Dialysis Efficiency
作品名稱（其他語言）
著者 Chii-Dong Ho; Jr-Wei Tu; Jun-Wei Lim; Wei-Chi Lai
單位
出版者
著錄名稱、卷期、頁數 Membranes 13(6), 556
摘要 Membrane dialysis is one of the membrane contactors applied to wastewater treatment. The dialysis rate of a traditional dialyzer module is restricted because the solutes transport through the membrane only by diffusion, in which the mass-transfer driving force across the membrane is the concentration gradient between the retentate and dialysate phases. A two-dimensional mathematical model of the concentric tubular dialysis-and-ultrafiltration module was developed theoretically in this study. The simulated results show that the dialysis rate improvement was significantly improved through implementing the ultrafiltration effect by introducing a trans-membrane pressure during the membrane dialysis process. The velocity profiles of the retentate and dialysate phases in the dialysis-and-ultrafiltration system were derived and expressed in terms of the stream function, which was solved numerically by the Crank–Nicolson method. A maximum dialysis rate improvement of up to twice that of the pure dialysis system (𝑉𝑤=0 ) was obtained by employing a dialysis system with an ultrafiltration rate of 𝑉𝑤=2 mL/min and a constant membrane sieving coefficient of 𝜃=1 . The influences of the concentric tubular radius, ultrafiltration fluxes and membrane sieve factor on the outlet retentate concentration and mass transfer rate are also illustrated.
關鍵字 dialysis;tubular dialyzer;ultrafiltration;mass transfer;separation efficiency
語言 en
ISSN 2077-0375
期刊性質 國外
收錄於 SCI Scopus
產學合作
通訊作者
審稿制度 否
國別 CHE
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/125036 )