Synthesis of zinc ferrite nano-particles from industrial wastes and its ability to remove selenium metal ion from waste water
The purpose of this study is investigate the selenium (Se) removal efficiency of zinc ferrite nano-particles from Synthetic Waste Water. Single phase zinc ferrite (ZnFe2O4) nano-particles with a mean crystallite size of 9-64 nm were prepared from industrial waste materials (steelmaking wastes) by co-precipitation method at low temperature (100 oC). Steelmaking wastes were characterized by XRF and XRD. The influence of ferrite synthesis condition such as the effect of annealing temperature on the crystallite size was investigated. The produced nano-powder was annealed at different annealing temperatures 150,300,500 and 850oC for 5h. It was characterized by X-ray diffraction (XRD), ï¬eld emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The magnetic properties were demonstrated by vibrating sample magnetometer (VSM). Additionally, its adsorption rate was estimated with different conditions such as pH, sorbent masses and contact time. The results show that, The values of the quantities that were collected by VSM, such as saturation magnetization and coercivity field, were primarily dependent on the crystallite size whereas, with the increase in particle size, magnetization decreases. Zinc ferrite nanoparticles has good adsorption capacity for selenium.
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