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

Mekawy, Zakaria A.; Moussa, Saber I.; Mousa, Abeer; El-Shazly, E. A. A.; Allan, K. F.

doi:10.1007/s10967-022-08292-3

Cited by 3 publications

(2 citation statements)

References 58 publications

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“…The demarcation between the value of radiocobalt sorbed and the precipitated amount is hard. The same result has been reported by other investigators [33,34]. However, and according to Chadha et al, below pH 3, i.e., an acidic medium, CS can be dissolved [35].…”

Section: Effect Of Ph Of the Treated Spiked Solutionsupporting

confidence: 88%

Biosorption Capability of Chitosan for Removal of Cs-137 and/or Co-60 from Radioactive Waste Solution Simulates

Mahmoud,

Eskander,

Saleh

2024

Sustainability

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Biosorption is an impurity-free application developed from the use of nuclear technology for peaceful purposes in everyday life and can be used to treat wastewater streams contaminated with various radionuclides. In this study, a laboratory decontamination experimental approach was developed to apply commercial chitosan as a biosorbent applied for removing radiocesium (Cs-137) and/or radiocobalt (Co-60) from spiked aqueous media. The factors assumed to affect the biosorption of both radionuclides included contact time, pH, and initial radioactivity content. In addition, the biosorbent dose and temperature of the process were studied. Both the biosorption capacity and the biosorption efficiency of the treatment process were calculated. According to FT-IR analysis, it can be assumed that the chitosan amine group (-NH2) is almost accountable for the biosorption of both radionuclides from waste solution simulates. Based on the data obtained, commercial chitosan can be considered an economical and efficient biosorbent for handling low- and medium-level radioactive wastewater streams containing cesium and/or cobalt radionuclides. The acquired data showed that 144 h is an adequate time to remove more than 94% of radiocobalt and about 93% of radiocesium, from a separate solution for each, at pH ~6.5 and using 0.5 g of commercial chitosan.

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Section: Effect Of Ph Of the Treated Spiked Solutionsupporting

confidence: 88%

Biosorption Capability of Chitosan for Removal of Cs-137 and/or Co-60 from Radioactive Waste Solution Simulates

Mahmoud,

Eskander,

Saleh

2024

Sustainability

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“…The global expansion of nuclear energy applications in fields such as agriculture, industry, nuclear medicine, nuclear weapons, nuclear research, and others has disrupted the environmental balance as radioactive residues for these applications have increased. Scientists [1][2][3][4] are working hard to find a solution to this growing problem. Radioactive isotopes like 60 Co and 152+154 Eu are hazardous to humans due to their prolonged half-lives of 5.3 and 8.8 years, respectively.…”

Section: Introductionmentioning

confidence: 99%

Linear and Non Linear Recognition for the Sorption of 60Co and 152+154Eu Radionuclides onto Bio CuO Nanocomposite

et al. 2022

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A novel nanocomposite was prepared by hybridizing polyacrylic acid/maleic acid with nano copper oxide (PAACMA/CuO) for the sorption of 60Co (II) and 152+154Eu (III) radionuclides from an aqueous solution. Nano-CuO was biochemically produced by hydrolysing its salt in the presence of the Aspergillus terreus fungus. The PAACMA/CuO nanocomposite was characterized using a variety of analytical techniques. The optimum sorption conditions (pH 4.5 for 60Co and pH 3.53 for 152+154Eu, 24 h of equilibrium time at 20 oC) were applied. The kinetic mechanism of the sorption reaction was controlled by pseudo second order based on residual charts, coefficient of determination (R2), and corrected Akaike information Criterion (AICc). The sorption reaction mechanism was controlled by Langmuir model for linear regression using the coefficient of determination and the Dubinin-Radushkevich D-R model for the AICc and residual plots error functions. The reaction mechanism throughout non-linear regression was controlled by the D-R model due to the coefficient of determination, AICc, and residual charts. The PAACMA/CuO nanocomposite had a mono-layer adsorption capacity of 11.04 mg g− 1 for Co (II) and 21.54 mg g− 1 for Eu (III). According to desorption studies, Co (II) and Eu (III) could be recovered by 0.1 mol L− 1 EDTA with efficiencies 55.46% and 95.044%, respectively. According to thermodynamic studies, the sorption of Co (II) and Eu (III) on the prepared composite was endothermic and spontaneous.

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Efficacious conditions for sorption of 85Sr (II) and 152+154Eu (III) onto natural composite beads

Mekawy,

Moussa,

Dakroury

2024

Journal of Water Process Engineering

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

Cited by 3 publications

References 58 publications

Biosorption Capability of Chitosan for Removal of Cs-137 and/or Co-60 from Radioactive Waste Solution Simulates

Biosorption Capability of Chitosan for Removal of Cs-137 and/or Co-60 from Radioactive Waste Solution Simulates

Linear and Non Linear Recognition for the Sorption of 60Co and 152+154Eu Radionuclides onto Bio CuO Nanocomposite

Efficacious conditions for sorption of 85Sr (II) and 152+154Eu (III) onto natural composite beads

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