COD and nitrate removal from wastewater using ‎Fe3O4 in the presence of electromagnetic field

Fateme Mohamadi¹ Amideddin Nouralishahi² Omid Tavakoli³

1) University of Tehran, Iran, Email:
2) University of Tehran, Iran, Email:
3) University of Tehran, Iran, Email:

Publication : 2nd. International Congress on science & Engineering - paris(parisconf.com)
Abstract :
High level of contaminants, like nitrates and organic compounds, in industrial ‎wastewater streams has been considered as one of the most critical environmental ‎problems in recent decays. The presence of nitrate species in the surface water ‎endangers human life and other bio-organisms. Therefore, before discharging into the ‎environment, wastewater streams must be treated by proper techniques to decrease ‎the concentration of contaminants as much as possible. The current study investigates ‎the effects of electromagnetic fields on the performance of Fe3O4 magnetic ‎nanoparticles in adsorptive removal of nitrate and COD from wastewater samples. ‎According to the results, the removal efficiencies of nitrate and COD are remarkably ‎respectively improved from 43% and 49%, in the absence of electromagnetic field, to ‎‎64% and 58%, in the presence of the electromagnetic field. This can be attributed to ‎the effect of electromagnetic field on increase in intermolecular movement and ‎simultaneous weakening hydrogen bonds between pollutants and water molecules, ‎which may lead to facilitating pollutant removal from the solution.
Keywords : Treatment Wastewater Electromagnetic Field Nanoparticles‎