Title

Assembly of CeO2–MoO3–SiO2(CH2)3-(Alginate)2 As A novel nanocomposite for removal of MnII/CrVI and 56Mn/51Cr radionuclides from water

Document Type

Article

Abstract

A new nanocomposite, CeO2–MoO3–SiO2(CH2)3-(Alg)2, has been synthesized via a simple synthesis method using a microwave irradiation technique. The morphological characterization indicated that the average particle size of the nanocomposite is 94.26–141.54 nm.The adsorptive remediation was established for MnII and CrVI ions by the nanocomposite under the influence of the microwave sorption process. Additionally, remediation of 51Cr and 56Mn radioactive nuclides was established using column technique. In this study, all the adsorption controlling parameters were explored like, solutions pH, contact time, amount of nanocomposite, and ionic concentration of the target metals. The maximum metal up-take capacities were estimated as 122.06 mg/g for MnII and 151.96 mg/g for CrVI by utilizing 5.0 mg of the nanocomposite at pH values 7.0 for MnII, and 2.0 for CrVI, while the equilibrium time at 25, and 20 s for MnII, and CrVI ions, respectively. The adsorption kinetics of MnII, and CrVI ions onto the CeO2–MoO3–SiO2(CH2)3-(Alg)2 nanocomposite proved to fit with the pseudo-second-order kinetics model and the adsorption mechanism fitted to the Langmuir and Freundlich isotherm models compared to the other models.

Publication Date

4-1-2021

Faculty

Faculty of Dentistry

Subject Area

Physical Sciences, General Materials Science, Physics and Astronomy

Indexed in Scopus

yes

Indexed in Web Of Science

yes

DOI

https://doi.org/10.1016/j.matchemphys.2021.124278

Volume

262

Keywords

56 51 Mn/ Cr radioactive nuclides, Kinetics/isotherm models, Mn /Cr II VI, Nano cerium oxide, Nano molybdenum oxide, Sodium alginate

ISSN

02540584

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