Study of ion-selective membranes from electrodialysis removal of industrial effluent metals II: Zn and Ni

Electrodialysis (ED) with ion-exchange membranes represents one of the most important membrane methods of treatment of industrial effluents discharged. Attention to the deep ecological aspect of this method implies favourable forecasts for its future. Preparation and analysis of the properties of asymmetric membranes prepared photochemically with one epoxy resin and zeolite are related to the ion-selective transport when compared with Nafion 417 commercial membranes. Excellent results are shown from Ni2+ and Zn2+ recuperation with solution prepared and industrial effluent (90% recovery in 2 h from ED).