Novel negatively charged nanofiltration membrane based on 4,4′-diaminodiphenylmethane for dye removal

Membrane separation processes constitute an economical and efficient technology for the effective treatment of dye wastewater. In this study, 4,4′-diaminodiphenylmethane and 1,3,5-benzenetricarbonyl trichloride were used as monomers to prepare polyamide-based nanofiltration (NF) membranes by interfacial polymerization, for dye removal. The preparation parameters of the NF membrane were optimized by investigating the effects of the concentrations...