Performance evalution of asymmetric nanofiltration membrane for reactive dye removal

Abstract

Nanofiltration membrane separation process is becoming an alternative treatment technology to treat dye-containing effluent because it is technically and economically feasible. Convectional treatments methods such as coagulation, activated carbon, ozonation and Fenton reagent are not feasible to recycle and reuse dye bath effluent in dyeing processes. Advantages of nanofiltration technology are the dye bath effluent can be recycled and reuse in dye bath processes, low cost and the system offer flexible application potential. Application of nanofiltration for reactive dye removal is entitled to ionic strength of solute and membrane. Thus, a study to investigate the effects of shear rate and the influence of sodium chloride (NaCl) concentration on removal of reactive dyes has been performed.