Strontium-90 is the one of the dangerous fission product which is generated during producing electricity in nuclear reactor. Therefore, separation of this radionuclide from contaminated water is an important step to safeguard human health and minimise the impact on the environment. In this research, adsorption behaviour of strontium ions onto magnetic nanoparticle decorated three-dimensional graphene foam (3D-MGF) was investigated. Three-dimensional graphene foam was prepared by CVD method, then it was doped with Fe3O4 nanoparticles by hydrothermal method. The characterization of 3D-MGF was investigated by using different characterization techniques. Raman, XRD and FT-IR results revealed chemical and structural characterization of 3D-MGF. The effect of adsorption parameters on adsorption process were evaluated by response surface methodology (RSM) approach based on central composite design (CCD). The analysis of variance (ANOVA) results showed that the applied model was statistical importance owing to large F value (88,45) and very low P value (&lt;0.0001). Adsorption equilibrium isotherms were analyzed by Langmuir, Freundlich and Dubinin-Radushkevich models. According to Langmuir isotherm analysis, a maximum adsorption capacity of strontium ions on 3D-MGF was calculated 53.48 mg/g. Mean adsorption free energy (E) was found 7.07kj/mol from D-R model and the result indicated that the adsorption process was physi-sorption. Finally, Thermodynamic parameters such as Gibbs free energy (ΔGo), the enthalpy (ΔHo) and the entropy change of adsorption (ΔSo) have also been evaluated and it has been found that the adsorption process was non-spontaneous and endothermic in nature.

Investigation of magnetic nanoparticles (Fe3O4) anchored 3D-Graphene Foam (3D-MGF) as an adsorbent for strontium adsorption using Central Composite Design (CCD) method

256th National Meeting (2018)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.