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Sorption of 60Co(II) from aqueous solutions onto biosynthesized zinc oxide nanocomposites

ZA Mekawy, SI Moussa, AM Mousa… - … of Radioanalytical and …, 2022 - Springer
ZA Mekawy, SI Moussa, AM Mousa, GA Dakroury, KF Allan
Journal of Radioanalytical and Nuclear Chemistry, 2022•Springer
Nano ZnO is biosynthesized using Lactobcillus sp. Poly Acrylic acid-co-Acrylonitrile/ZnO,
PAACAN/ZnO, and poly Acrylic acid-co-Maleic acid/ZnO, PAACMA/ZnO, nancomposites
were synthesized using 60Co γ-rays. PAACAN/ZnO and PAACMA/ZnO nanocomposites
were characterized and used as sorbents for 60Co (II) radionuclide. The monolayer
adsorption capacities of 60Co (II) onto PAACMA/ZnO and PAACAN/ZnO are 18.235, 7.105
mgg− 1, respectively at pH 4.5 and 20° C. The sorption reaction has a pseudo 2nd order …
Abstract
Nano ZnO is biosynthesized using Lactobcillus sp. Poly Acrylic acid-co-Acrylonitrile/ZnO, PAACAN/ZnO, and poly Acrylic acid-co-Maleic acid/ZnO, PAACMA/ZnO, nancomposites were synthesized using 60Co γ-rays. PAACAN/ZnO and PAACMA/ZnO nanocomposites were characterized and used as sorbents for 60Co(II) radionuclide. The monolayer adsorption capacities of 60Co(II) onto PAACMA/ZnO and PAACAN/ZnO are 18.235, 7.105 mgg−1, respectively at pH 4.5 and 20 °C. The sorption reaction has a pseudo 2nd order mechanism. 0.1 M EDTA could be used as an eluent for desorption. The desorption efficiencies of 60Co(II) from PAACAN/ZnO and PAACMA/ZnO were 67.51 and 84.85%, respectively. The sorption process is endothermic and spontaneous.
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