The usage of magnetic nanoparticles for the removal of heavy metal from waters

The magnetic nanoparticles have been used in different fields such as electronic devices, biomedical practices, mineral separation, heat transfer application etc. In recent years the usage of magnetic nanoparticles as an adsorbent for removal of various pollutants from wastewaters have been increased, because of surface properties and easy separation of materials from solution. In this study the investigation of nickel removal from aqueous solution using Fe3O4 nanoparticles synthesized by hydrothermal method at different conditions (contact time, adsorbent dose, pH, initial heavy metal concentration etc.) in batch reactors were aimed. Nanoparticle characterization was illuminated with FT-IR, SEM analysis. The experimental studies have shown that, the highest nickel removal was achieved as 95.8% from aqueous solution containing 25 mg/L initial nickel concentration at 40 minute contact time, 125 rpm shaking speed, 2 g/L nanoparticle dose and pH 9. Freundlich and Langmuir isotherm experiments were performed and correlation coefficients were determined as 90.8% and 91.2%, respectively.