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Removal of Pertechnetate (99TcO4-) from Liquid Waste by Magnesium Ferrite (MgFe2O4) Nanoparticles Synthesized Using Sol-Gel Auto Combustion Method

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Document pages: 19 pages

Abstract: Low-costadsorbents, Magnesium ferrite (MgFe2O4) nanoparticleswere synthesized using three different types of fuel such as Urea, Oxalic acid,and Citric acid via sol-gel auto-combustion method. The prepared products werecharacterized by means of powder X-Ray Diffraction (XRD), Fourier TransformInfrared spectroscopy (FT-IR) and Field Emission Scanning Electron Microscope(FE-SEM). The influence of the fuel used on the morphology and the crystallitesize of MgFe2O4 Nano products were studied. The results showed that Citric acid fuel produced pure MgFe2O4 with the smallest crystallite size average cluster = 13.53 nm. The synthesizedsample was used for the removal of 99TcO4- anions fromlow level liquid waste under studied conditions. The different parametersaffecting on the adsorption process using the batch method were studied. Theresults revealed that MgFe2O4 nanostructure has highremoval ability of 99TcO4- from aqueoussolutions (98.84 ). The adsorption data are in good agreement with Freundlichand Pseudo second order isotherm models. The adsorption process was achemisorption reaction additionally, the results of the thermodynamicparameters indicated that the adsorption of 99TcO4- onnanostructures was an exothermic and spontaneous process.

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