Efficient Removal of Methylene Blue by Fenton-like Reaction using nZVI/GAC Composite as Catalyst

摘要

A composite of nano-zerovalent iron (nZVI) supported on granular activated carbon (GAC) was synthesizedthrough adsorption-reduction method, and its performances used as catalyst of Fenton-like were investigated to degrade methylene blue (MB) in model wastewater. Theresults show that homogeneous dispersion of nZVI was greatly improved after supported on GAC. In comparison, the composite (nZVI/GAC) has higher removal efficiency of MB than the same amount of nZVI or GAC. Moreover, the pH values increased and leaching iron was reduced after reaction which were help to further processing with lowcost. The useof nZVI/GAC composite provided a selective and viable solution for removing MB from water by Fenton-like reaction.