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Efficient removal of U(VI) from aqueous solution using the biocomposite based on sugar beet pulp and pomelo peel

A biocomposite sorbent composed of sugar beet pulp and pomelo peel was utilized for the biosorption of uranium (VI) from the aqueous solution. Parameters such as solution pH, biocomposite amount, contact time, temperature and initial concentration of U(VI) ions on the adsorption performance of biocomposite sorbent was studied. The equilibrium data fitted best to the Langmuir’s isotherm model (qe, max = 79.36 mg g–1). Obtained thermodynamic and kinetic parameters demonstrated that the biosorption process is spontaneous, exothermic, and fitted best to the pseudo-second order. The desorption study revealed that uranium recovery by 0.1 M NaHCO3 was 99.24% in the first cycle for used biocomposite.

Uranium (VI) ; Biocomposite ; Equilibrium ; Thermodynamics ; Desorption

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