Microbial synthesis of magnetite nanoparticles for arsenic removal

ABSTRACT

Apart from their vast applications, the magnetic property of magnetite nanoparticles make it as opt candidatefor the removal of arsenic from drinking water and other polluted water streams. Magnetite nanoparticleswere produced by microbial synthesis from Fusarium oxysporum with Ferric Chloride and magnetite ore assubstrates. The structure and morphology of magnetite nanoparticles were characterized by Fourier TransformInfrared (FTIR) Spectroscopy, UV-Vis spectroscopy, X-ray Diffraction (XRD), Scanning Electron Microscope(SEM), and their magnetic properties were characterized Vibrating Sample Magnetometer. The presence ofmagnetite nanoparticles was indicated by the XRD spectral pattern and their SEM micrograph showed in thenano ranged particles with an average diameter of 26.78 nm. Magnetic characteristic of magnetite nanoparticleswas indicated super paramagnetic properties with a saturation magnetic value of 90.01 emug−1. These magnetitenanoparticles were used to remove the arsenic in the water by simple magnetic adsorption process and theremoval efficiency was found to be 96%.