Improvement of the sorption behavior of aluminum silicate composite toward 134Cs and 60Co radionuclides by non-living biomass of Chlorella vulgaris

El-Shazly, E. A. A.; Abo-Zahra, Shereen Fathy; Hassan, H. S.; Ali, Hamdy Elsayed Ahmed

doi:10.1007/s11356-020-08260-y

Cited by 25 publications

(8 citation statements)

References 36 publications

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“…The sorption kinetics of cesium and barium ions using the ZFO/HA nanocomposite were studied employing various kinetic models such as the pseudo-first and pseudo-second order 35 , 36 . The equation of the pseudo-first model is written as follows: where qt symbolizes the amount of Cs(I) and Ba(II), mg -1 g, adsorbed onto prepared ZFO/HA nanocomposite at any time t, while the adsorbed amount of ions, q e mg -1 g, at equilibrium as well as k 1 is the constant of this model, min -1 , the straight line obtained from the relation between log (q e − q t ) with t suggests that this sorption process can be obeyed to this model.…”

Section: Methodsmentioning

confidence: 99%

“…The parameters of thermodynamic studies (ΔG◦, ΔH◦, and ΔS o ) to the adsorption process for Cs(I) and Ba(II) toward ZFO/HA composite were studied using the following equations 36 : …”

Section: Methodsmentioning

confidence: 99%

“…Kinetic modeling. The sorption kinetics of cesium and barium ions using the ZFO/HA nanocomposite were studied employing various kinetic models such as the pseudo-first and pseudo-second order 35,36 . The equation of the pseudo-first model is written as follows:…”

Section: Sorption Studiesmentioning

confidence: 99%

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Adsorption and separation of Cs(I) and Ba(II) from aqueous solution using zinc ferrite-humic acid nanocomposite

Maksoud

Murad

Zaher

et al. 2023

Sci Rep

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Reclaimable adsorbents have an essential role in removing radionuclides from waste streams. Herein, zinc ferrite-humic acid ZFO/HA nanocomposite was synthesized for effective cesium and barium adsorption. The prepared ZFO/HA nanocomposite was analyzed using analytical techniques including XRD, FTIR, EDX, and SEM. From kinetic studies, the mechanism adsorption process follows the second model. The isotherm studies clarified that the Langmuir model fit the adsorption of both ions onto the prepared sample, and the monolayer capacities are equal to 63.33 mg/g and 42.55 mg/g for Ba(II) and Cs(I), respectively. The temperature parameter was also studied, and the adsorption reaction was spontaneous and endothermic. The maximum separation between two ions was achieved at pH 5 (αCs/Ba = 3.3).

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption and separation of Cs(I) and Ba(II) from aqueous solution using zinc ferrite-humic acid nanocomposite

Maksoud

Murad

Zaher

et al. 2023

Sci Rep

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“…Non-linear form q e = q m bC e ∕1 + bC e (12) Freundlich [37,38] Linear form lnq e = lnK f + 1∕nlnC e (13) Non-linear form…”

Section: Modelmentioning

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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“…137 Cs ( t 1/2 ~ 30.17 years) is one of the major sources of γ radioactivity in spent fuel 1 . 137 Cs + ions are highly soluble and migrate easily in the environment, and thus can be hazardous to human health and entire ecosystem 2 , 3 . For example, large quantities of 137 Cs + ions have been released into the environment during the Fukushima nuclear accident, which has resulted in total radioactivity levels in a variety of organisms above the limit value (100 Bq kg −1 ) after many years 4 – 6 .…”

Section: Introductionmentioning

confidence: 99%

“Ion-imprinting” strategy towards metal sulfide scavenger enables the highly selective capture of radiocesium

Tang,

Jia,

Liu

et al. 2024

Nat Commun

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Highly selective capture of radiocesium is an urgent need for environmental radioactive contamination remediation and spent fuel disposal. Herein, a strategy is proposed for construction of “inorganic ion-imprinted adsorbents” with ion recognition-separation capabilities, and a metal sulfide Cs2.33Ga2.33Sn1.67S8·H2O (FJSM-CGTS) with “imprinting effect” on Cs+ is prepared. We show that the K+ activation product of FJSM-CGTS, Cs0.51K1.82Ga2.33Sn1.67S8·H2O (FJMS-KCGTS), can reach adsorption equilibrium for Cs+ within 5 min, with a maximum adsorption capacity of 246.65 mg·g−1. FJMS-KCGTS overcomes the hindrance of Cs+ adsorption by competing ions and realizes highly selective capture of Cs+ in complex environments. It shows successful cleanup for actual 137Cs-liquid-wastes generated during industrial production with removal rates of over 99%. Ion-exchange column filled with FJMS-KCGTS can efficiently treat 540 mL Cs+-containing solutions (31.995 mg·L−1) and generates only 0.12 mL of solid waste, which enables waste solution volume reduction. Single-crystal structural analysis and density functional theory calculations are used to visualize the “ion-imprinting” process and confirm that the “imprinting effect” originates from the spatially confined effect of the framework. This work clearly reveals radiocesium capture mechanism and structure-function relationships that could inspire the development of efficient inorganic adsorbents for selective recognition and separation of key radionuclides.

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Improvement of the sorption behavior of aluminum silicate composite toward 134Cs and 60Co radionuclides by non-living biomass of Chlorella vulgaris

Cited by 25 publications

References 36 publications

Adsorption and separation of Cs(I) and Ba(II) from aqueous solution using zinc ferrite-humic acid nanocomposite

Adsorption and separation of Cs(I) and Ba(II) from aqueous solution using zinc ferrite-humic acid nanocomposite

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

“Ion-imprinting” strategy towards metal sulfide scavenger enables the highly selective capture of radiocesium

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