Modelling and Optimization of Uranium (VI) Ions Adsorption Onto Nano-ZnO/Chitosan Bio-composite Beads with Response Surface Methodology (RSM)
No Thumbnail Available
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Nano-ZnO-chitosan bio-composite beads were prepared for the sorption of UO22+ from aqueous media. The resulting nano-ZnO/CTS bio-composite beads were characterized by TEM, XRD etc. The sorption of UO22+ by bio-composite beads was optimized using RSM. The correlation between four variables was modelled and studied. According to RSM data, correlation coefficients (R2 = 0.99) and probability F-values (F = 2.24 × 10− 10) show that the model fits the experimental data well. Adsorption capacity for nano-ZnO/CTS bio-composite beads was obtained at 148.7 mg/g under optimum conditions. The results indicate that nano-ZnO/CTS bio-composite beads are appropriate for the adsorption of UO22+ ions from aqueous media. Also, the suitability of adsorption values to adsorption isotherms was researched and thermodynamic data were calculated. © 2017, Springer Science+Business Media, LLC.
Description
Keywords
Adsorption , II-VI semiconductors , Surface properties , Uranium , Zinc oxide , Adsorption capacities , Bio-composites , Correlation coefficient , Ions adsorption , Nano-ZnO , Optimum conditions , Response surface methodology , Thermodynamic data , adsorption , aqueous solution , composite , ion , modeling , nanoparticle , optimization , polysaccharide , response surface methodology , thermodynamics , uranium , Uranium compounds