Efficient removal of Alizarin Red S (dye) from aqueous solution using NiFe2O4 magnetic nanoparticles

The magnetic NiFe2O4 nanoparticles have been synthesized and used as adsorbents for removal of an industrially important dye, Alizarin Red S (ARS) from aqueous solution. The NiFe2O4nanoparticles were characterized by scanning electron microscope (SEM), Transmission electron microscope (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectra (FTIR). Various parameters, which can influence the adsorption like ,pH, adsorption time ,and adsorbentdose, have been fully investigated. The results reveal that the magnetic adsorbent can be easily removed by a simple external magnet with high separation efficiency. In addition, the process is clean and safe for purifying water pollution. The prepared NiFe2O4 magnetic nanoparticles could thus be used as favorable adsorbents for the remove organic dyes from polluted water.

Keywords:

Magnetic separation , Adsorption , Alizarin Red S , NiFe2O4