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

被引：0
作者：
Zakaria A. Mekawy
Saber I. Moussa
Abeer M. Mousa
Gehan A. Dakroury
Karam F. Allan
机构：
[1] Egyptian Atomic Energy Authority,Nuclear Chemistry Department, Hot Laboratories Centre
[2] Egyptian Atomic Energy Authority,Soil and Water Research Department, Nuclear Research Center
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2022年 / 331卷
关键词：
Nano ZnO composites; Co radioactive waste; Sorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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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页码：2331 / 2347
页数：16
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