Remediation of 137Cs radionuclide in nuclear waste effluents by polymer composite: adsorption kinetics, isotherms and gamma irradiation studies

Olatunji, Michael Adekunle; Khandaker, Mayeen Uddin; Mahmud, Habibun Nabi Muhammad Ekramul; Amin, Yusoff Mohd; Ademola, Janet Ayobami; Olorode, D. O.

doi:10.1007/s10967-018-5875-4

Cited by 12 publications

(2 citation statements)

References 64 publications

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“…The uptake percentages of 137 Cs were increased by raising the pH value from 3 to 9. This is due to the fact that H 3 O + had a large concentration at lower pH values and competed with cesium ions for free active sites [35]. With increasing pH value, the concentration of H 3 O + decreased and the deprotonation of the active site on the adsorbent surface increased, thus enabling these sites to attract cesium ions and hence the uptake of cesium increased.…”

Section: Kinetic Studiesmentioning

confidence: 99%

Synthesis and Application of MnO-Fe2O3 Nanocomposites for the Removal of 137Cs and 60Co Radionuclides from Artificial Radioactive Aqueous Waste

Saleh,

Mahmoud,

Aglan

et al. 2023

ChemEngineering

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For innovative application in wastewater treatment techniques, MnO-Fe2O3 nanocomposites were successfully synthesized using the sol–gel auto-combustion method at different temperatures for the adsorption of 137Cs and 60Co radionuclides from aqueous solution. The characterization of these nanocomposites was carried out through FT-IR, SEM-EDX, and X-ray diffraction. These nanocomposites were employed as adsorbent materials for the removal of 137Cs and 60Co radionuclides from simulated radioactive waste solutions. The study involved a series of experiments aiming to demonstrate the MnO-Fe2O3 nanoparticles’ exceptional adsorption potential concerning 137Cs and 60Co. Additionally, the investigation delved into how variations in temperature, dose amount, contact time, and pH value influence the adsorption dynamics. Due to their high specific surface area, the synthesized MnO-Fe2O3 nanoparticles had high adsorption capacity of more than 60% and 90% for 137Cs and 60Co, respectively. By investigation of kinetics and adsorption isotherms, pseudo-second-order reaction and the Langmuir model turned out to fit well for the adsorption of 137Cs and 60Co onto the MnO-Fe2O3 nanocomposites. Moreover, a thermodynamic analysis revealed that the adsorption process was spontaneous for both target metals and the adsorption of 60Co was endothermic, whereas the adsorption of 137Cs was exothermic.

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Section: Kinetic Studiesmentioning

confidence: 99%

Synthesis and Application of MnO-Fe2O3 Nanocomposites for the Removal of 137Cs and 60Co Radionuclides from Artificial Radioactive Aqueous Waste

Saleh,

Mahmoud,

Aglan

et al. 2023

ChemEngineering

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“…The uptake percentages of cesium ion were increased by increasing the pH value from 2 to 7. This is because H 3 O + is of a higher concentration at lower pH values and competed with cesium ions for active sites [37,38]. With increasing pH, the concentration of H 3 O + decreased and the deprotonation of active sites on soil surface increased that enable these sites to attract cesium ions and hence the uptake of cesium increased.…”

Section: Effect Of Phmentioning

confidence: 99%

Investigating the sorption behavior of Cesium and cobalt on soil samples.

Sheha

Roushdy

Al-Shazly

et al. 2020

Arab Journal of Nuclear Sciences and Applications

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Two soil samples were collected from El-Dabaa site and denoted as DNS/C (Dabaa natural soil / Calcite) and DNS/Q (Dabaa natural soil / Quartz). They were characterized using X-Ray Fluorescence (XRF) analysis, Fourier transform infrared spectroscopy (FT-IR) analysis and X-Ray diffractometer (XRD) analysis. The soil samples were applied as solid phases for retention of 134 Cs and 60 Co radionuclides from their aqueous solutions. The effect of different parameters as pH value, contact time, and competing ion on the sorption behavior of 134 Cs and 60 Co was studied in static conditions. The maximum sorption capacity of DNS/C was 1.16 and 4.28 mg.g -1 for Cs(I) and Co(II) ions, while it was 3.19 and 4.76 mg.g -1 for sorption of both metal ions onto DNS/Q respectively. Different kinetic models were applied to assess the sorption of Cs(I) and Co(II) ions from their aqueous solutions by soil samples. The sorption process followed pseudo-second-order kinetics clarifying that chemisorption could be regarded as the controlling step. The role of temperature on sorption of Cs(I) and Co(II) was studied and the values of thermodynamic parameters (∆H o , ΔG o and ΔS o ) were determined. 34 Cs radionuclides exhibited ∆H o values amounting to -14.5416 and -13.0962 kJ.mol -1 for sorption onto DNS/C and DNS/Q samples. These negative values confirmed the exothermic nature of sorption process. The enthalpy change attained the values 25.3895 and 24.67368 kJ.mol -1 for 60 Co radionuclide sorption onto the soil samples DNS/C and DNS/Q. These positive values confirmed the endothermic nature of the sorption process.

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Adsorption of cesium on mesoporous SBA-15 material containing embedded copper hexacyanoferrate

Xiang

Zhang

Tao

et al. 2019

J Radioanal Nucl Chem

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Remediation of 137Cs radionuclide in nuclear waste effluents by polymer composite: adsorption kinetics, isotherms and gamma irradiation studies

Cited by 12 publications

References 64 publications

Synthesis and Application of MnO-Fe2O3 Nanocomposites for the Removal of 137Cs and 60Co Radionuclides from Artificial Radioactive Aqueous Waste

Synthesis and Application of MnO-Fe2O3 Nanocomposites for the Removal of 137Cs and 60Co Radionuclides from Artificial Radioactive Aqueous Waste

Investigating the sorption behavior of Cesium and cobalt on soil samples.

Adsorption of cesium on mesoporous SBA-15 material containing embedded copper hexacyanoferrate

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