Extraction of radionuclides of cerium, europium, cobalt and strontium with Mn3O4, MnO2, and MNOOH sorbents

Софронов, Д. С.; Krasnopyorova, Alla; Ефимова, Н. Н.; Oreshina, Аnna; Bryleva, E. Yu.; Yuhno, Galina; Lavrynenko, Sergiy; Rucki, Mirosław

doi:10.1016/j.psep.2019.03.013

Cited by 32 publications

(7 citation statements)

References 21 publications

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“…lnq e = lnK f + 1 n lnC e (9) where q e is the equilibrium adsorption capacity (mg g −1 ) , C e is the metal concentration at equilibrium, K f and n are constants related to adsorption capacity and intensity, respectively. The values of n and K f are shown in Table 4.…”

Section: D Response Surface Plotsmentioning

confidence: 99%

“…Sorption is one of the most promising techniques due to its advantages of high efficiency, low operation temperature, and high selectivity. Various types of materials such as goethite [5], aluminum silicate [6], aluminum oxide [4], functionalized magnetic chitosan [7], montmorillonites [8], manganese oxides [9], biomass [10] and algae [3] were used as sorbents/ion exchangers to remove and separate europium from radioactive waste and aqueous streams.…”

Section: Introductionmentioning

confidence: 99%

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Sorption studies of europium on cerium phosphate using Box-Behnken design

İnan

2020

Turk J Chem

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Amorphous cerium phosphate was prepared and characterized. Three-level Box-Behnken design (BBD) was employed to analyze the effect of process variables such as initial pH (2-6), contact time (60-180 min), and sorbent amount (0.05-0.15 g) on the sorption capacity of europium. Analysis of variance (ANOVA) revealed that the main effect of initial pH and sorbent amount has a substantial impact on the sorption of Eu(III). Probability F-value (F = 3 × 10 −3) and correlation coefficient (R 2 = 0.97) point out that the model is in good accordance with experimental data. The maximum sorption capacity of Eu(III) was found to be 42.14 mg g −1 at initial pH 6, contact time of 180 min, and a sorbent amount of 0.05 g. Sorption isotherm data was well explained by the Langmuir model and monolayer Eu(III) sorption capacity was obtained as 30.40 mg g −1. Kinetic data were well described by the pseudo-second-order model. Thermodynamic data suggested that the process is endothermic and spontaneous.

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Section: D Response Surface Plotsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sorption studies of europium on cerium phosphate using Box-Behnken design

İnan

2020

Turk J Chem

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“…A wide range of materials has been proposed, so that a particular one may be chosen dependent on the removal effectiveness, chemical stability, expenses, regeneration ability, etc. described in details e.g., in [ 16 , 17 ]. Among numerous recent reports, it is worth mentioning the study of polyaniline/zirconium aluminate composite (PANI/ZAl) as a novel sorbent synthesized by the sol–gel hydrolysis method.…”

Section: Introductionmentioning

confidence: 99%

Uptake of Radionuclides 60Co, 137Cs, and 90Sr with α-Fe2O3 and Fe3O4 Particles from Aqueous Environment

et al. 2021

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In the paper, investigation results of the uptake efficiency of radionuclides 60Co, 90Sr, and 137Cs dissolved in water onto iron oxides α-Fe2O3 and Fe3O4 are presented. It was found that sorption efficiency increased for higher pH values. Independent of the oxide nature, the uptake characteristics are the best toward 60Co and the worst toward 137Cs, forming the row as follows: 60Co > 90Sr > 137Cs. The highest sorption ability at pH 9 was found for magnetite Fe3O4, which was 93%, 73%, and 26% toward 60Co, 90Sr, and 137Cs, respectively, while the respective percentages for hematite α-Fe2O3 were 85%, 41%, and 18%. It was assumed that the main sorption mechanism was ion exchange. That may explain some decrease of the sorption efficiency in drinking water due to the interfering presence of magnesium and calcium cations. The obtained results indicated the feasibility of the tested sorbents and their merits, especially in terms of relatively high uptake coefficients, low costs, availability, and lack of toxicity.

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“…Hence, the safe disposal of nuclear wastes is a public concern [8]. Numerous methods, such as chemical precipitation, ion exchange, membrane separation, and adsorption, have been used to separate and preconcentrate radionuclides from contaminated wastewater [9][10][11][12][13][14]. In comparison to other methods, the adsorption technology is often used to eliminate radionuclides due to its high efficiency, low cost, and ease of operation [15].…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal Of U(VI) Ions from Aqueous Solutions by Tannic Acid/Graphene Oxide Composites

et al. 2020

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Tannic acid/graphene oxide (TA/GO) composites were prepared in the present research, and their properties and sorption performance were evaluated by corresponding characterization methods and bath sorption experiments, respectively. The applications of TA/GO to remove U(VI) from aqueous solution were investigated with the maximum adsorption capacity of 87.8 mg·g−1 at low pH (pH = 3.6 ± 0.03). The sorption of U(VI) ions on TA/GO followed the Langmuir model because of the complexation of oxygen-containing functional groups on the surface of TA/GO composites and uranium ions. TA/GO manifested excellent selective adsorption toward uranium ions with other metal ions (Cs+, Sr2+, Co2+). Furthermore, TA/GO as an effective adsorbent was reused to remove a large amount of U(VI) ions from aqueous solution. Therefore, TA/GO is an ideal material to remove highly toxic U(VI) ions from wastewater.

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Extraction of radionuclides of cerium, europium, cobalt and strontium with Mn3O4, MnO2, and MNOOH sorbents

Cited by 32 publications

References 21 publications

Sorption studies of europium on cerium phosphate using Box-Behnken design

Sorption studies of europium on cerium phosphate using Box-Behnken design

Uptake of Radionuclides 60Co, 137Cs, and 90Sr with α-Fe2O3 and Fe3O4 Particles from Aqueous Environment

Efficient Removal Of U(VI) Ions from Aqueous Solutions by Tannic Acid/Graphene Oxide Composites

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