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The present book deals with the experiment carried out for the dye and salt removal from the feed solution of three different concentrations i.e. 12.5 ppm, 25 ppm and 50 ppm dye concentration & 500 ppm, 750 ppm and 1000 ppm salt concentration by two different Nanofiltration membranes - flat sheet membrane and Spiral wound membrane. The reuse of process water in the dye processing industry is considerable in terms of environment, economy, and industrial management by nanofiltration membranes. However, there are a lot of parameters affecting membrane performance. The book provides an indepth...