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The aim of this study was to investigate the effects of dyes, salts and auxiliary chemicals in reactive dye baths on the separation performance of nanofiltration membranes. A reactive dye bath was simulated for this purpose with auxiliary chemicals. A DS5-type nanofiltration membrane was used in the experimental runs. Performance of the nanofiltration membrane was evaluated by measuring permeate flux,...
In predicting the nanofiltration (NF) process, concentration polarization (CP) should be seriously considered. Since many empirical expressions for the mass transport in the CP layer were reported, it seems difficult to choose a proper one. This paper discusses the CP development along the bulk flow direction in crossflow NF using a theoretical model, and then compares the differences ofthe concerned...
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