Modified grafted nano cellulose based bio-sorbent for uranium (VI) adsorption with kinetics modeling and thermodynamics

Hybrid grafted nano cellulose was prepared in the existence of glycidyl methacrylate and functionalized by an amine group. Amine-modified grafted nano cellulose and its adsorption behavior were studied using a batch technology to an aqueous uranium solution, where the equilibrium and maximum uptake...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2022, 39(2), 263, pp.408-422
Main Authors: Kawady, Nilly Ahmed, Gawad, Ebrahim Abd El, Mubark, Amal Essam
Format: Article
Language:English
Subjects:
Adsorption
Biotechnology
Catalysis
Cellulose
Chemical reactions
Chemistry
Chemistry and Materials Science
Diffusion rate
Endothermic reactions
Grafting
Industrial Chemistry/Chemical Engineering
Kinetics
Mass transfer
Materials Science
Mathematical models
Parameters
Room temperature
Separation Technology
Sorbents
Sorption
Thermodynamics
Uranium
화학공학
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Summary:Hybrid grafted nano cellulose was prepared in the existence of glycidyl methacrylate and functionalized by an amine group. Amine-modified grafted nano cellulose and its adsorption behavior were studied using a batch technology to an aqueous uranium solution, where the equilibrium and maximum uptake capacities were carried out at room temperature within 1 h at pH 5. Characterization of the modified cellulose occurred utilizing FTIR, TGA, and TEM. Whereas theoretical characterization was applied to demonstrate the process of multicomponent mass transfer into the new functional grafted nano cellulose sorbent by MATLAB using several mathematical models like Freundlich, Langmuir, Redlich-Peterson, and Brunauer-Emmett-Teller for describing the equilibrium data of the uranium (VI) ions adsorption process. As the bridge between physics and chemistry, the thermodynamic parameters and kinetic parameters were calculated to describe the nature of the sorption process and the type of interaction, respectively. The reaction was followed a pseudo-second order (two parallel pseudo-first orders) model by relatively fast kinetics mixed between chemical and solid diffusion-controlled reactions manner. Finally, uranium (VI) ions sorption process exhibited an endothermic and spontaneous process in (2D) and (3D).
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-021-0886-1