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Characterisation and application of a novel positively charged nanofiltration membrane for the treatment of textile industry wastewaters

This paper demonstrates the high potential of the novel positively charged nanofiltration membrane previously reported. The removal and recovery of Methylene Blue from a synthetic dye house wastewater is investigated and the new membrane is shown to demonstrate both high flux and rejection properties, a rare combination. This work is an example of the recovery of a valuable cationic macromolecule and illustrates the potential for this membrane in the bioprocess and pharmaceutical industries or for the removal of multi-valent cations such as dyes and heavy metals in the paper and pulp, textiles, nuclear, and automotive industries.