Nanomaterials (Nov 2022)

Characteristic Aspects of Uranium(VI) Adsorption Utilizing Nano-Silica/Chitosan from Wastewater Solution

  • Ahmed K. Sakr,
  • Mostafa M. Abdel Aal,
  • Khaled A. Abd El-Rahem,
  • Eman M. Allam,
  • Samia M. Abdel Dayem,
  • Emad A. Elshehy,
  • Mohamed Y. Hanfi,
  • Mohammed S. Alqahtani,
  • Mohamed F. Cheira

DOI
https://doi.org/10.3390/nano12213866
Journal volume & issue
Vol. 12, no. 21
p. 3866

Abstract

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A new nano-silica/chitosan (SiO2/CS) sorbent was created using a wet process to eliminate uranium(VI) from its solution. Measurements using BET, XRD, EDX, SEM, and FTIR were utilized to analyze the production of SiO2/CS. The adsorption progressions were carried out by pH, SiO2/CS dose, temperature, sorbing time, and U(VI) concentration measurements. The optimal condition for U(VI) sorption (165 mg/g) was found to be pH 3.5, 60 mg SiO2/CS, for 50 min of sorbing time, and 200 mg/L U(VI). Both the second-order sorption kinetics and Langmuir adsorption model were observed to be obeyed by the ability of SiO2/CS to eradicate U(VI). Thermodynamically, the sorption strategy was a spontaneous reaction and exothermic. According to the findings, SiO2/CS had the potential to serve as an effectual sorbent for U(VI) displacement.

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