Environment Protection Engineering DESALINATION OF REACTIVE YELLOW 85 BY NANOFILTRATION

Vojtěch Kopecký, Petr Mikulášek
unpublished
Three types (Desal 5 DK, Desal 5 DL, PES 10) of nanofiltration membranes were tested to evaluate optimal operating conditions for flux values and salt rejection in the separation of reactive dye/salt mixtures. Effects of pressure and feed composition on the separation were investigated. Experiments showed that feed composition had a significant effect on flux values. The Donnan effect was greatly responsible for salt rejection. Of the membranes tested one membrane was chosen and batch
more » ... and batch diafiltration at constant pressure and constant volume was performed through a chosen membrane. The main purpose of diafiltra-tion experiments was to measure the dependence of the amount of the salt removed and the concentration of the salt in feed on time. This experiment was carried out in a dynamic cell.
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