Removal of Cesium from Aqueous Solutions by Sodium and Calcium Alginates

Khotimchenko, Maksim; Podkorytova, Elena; Kovalev, Vladimir A.; Khozhaenko, E. V.; Khotimchenko, Yuri

doi:10.3923/jest.2014.30.43

Cited by 20 publications

(4 citation statements)

References 15 publications

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“…This capacity is about 80.7% of its theoretical value (308.8 mg/g) and is similar to or better than some high-performance sulfide cesium sorbents, such as FJSM-GAS-1 (164 mg/g), KTS-1 (205 mg/g), KMS-1 (226 mg/g), KAlSnS-3 (259.31 mg/g), FJSM-SnS-2 (266.54 mg/g), and GeSbS-2 (231 mg/g) . Significantly, it greatly exceeds many inorganic oxides (e.g., zeolite and titanium phosphate), nanocomposites (e.g., PB/Fe 3 O 4 /GO and UiO-66/Fe 3 O 4 /GO), polymers (e.g., Na-alginate), and some commercial organic resin materials (e.g., AMP-PAN), whose saturation capacities normally vary from 55.6 to 159.5 mg/g.…”

Section: Resultsmentioning

confidence: 51%

“…The fast and efficient removal ability is comparable to or better than some leading sulfide cesium ion exchangers so far, for instance KMS-1, K@RWY, K-MPS-1, and FJSM-SnS-1 (Figure b). Moreover, this is in stark contrast with the lengthy equilibrium time required for many oxide-based sorbents, such as Na-alginate, PATiW, γ-Zr-phosphate, and PB/Fe 3 O 4 /GO, which routinely range from 120 min to as much as 14 400 min (Figure b). To the best of our knowledge, the fast cesium adsorption kinetics demonstrated by K@GaSnS-1 is at least partially based on the strong interaction between the acidic Cs + cations and the S 2– ions of the relatively basic anionic framework and the appropriate size of the channel, which allows for the rapid diffusion of Cs + cations.…”

Section: Resultsmentioning

confidence: 92%

“…Despite the fact that there is some decline in the K d value and removal efficiency at pH 10.4, the performance exhibited by K@GaSnS-1 was still very impressive. This is obviously superior to some inorganic cesium sorbents (e.g., Na-alginate, silicododecamolybdate, and FJSM-InMOF), ,, which are usually not efficient or effective for Cs + ion removal in the acidic or alkaline medium due to their hydrolytic instability.…”

Section: Resultsmentioning

confidence: 97%

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Rapid and Selective Uptake of Radioactive Cesium from Water by a Microporous Zeolitic-like Sulfide

Yan

Zhang

et al. 2023

Inorg. Chem.

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The fast and efficient removal of 137Cs+ ions from water is of great significance for the further treatment and disposal of highly active nuclear waste. Hitherto, although many layered metal sulfides have been proven to be very effective in capturing aqueous cesium, three-dimensional (3D) microporous examples have rarely been explored, especially compounds that are systematically used to study cesium ion exchange behaviors. In this paper, we present detailed Cs+ ion exchange properties of a 3D, microporous, zeolitic-like sulfide, namely K@GaSnS-1, in different conditions. Isotherm studies indicate that K@GaSnS-1 has a high cesium saturation capacity of 249.3 mg/g. In addition, it exhibits rapid sorption kinetics, with an equilibrium time of only 2 min. Further studies show that K@GaSnS-1 also displays a strong preference and good selectivity for cesium, with the highest distribution coefficient K d value up to 3.53 × 104 mL/g. Also noteworthy is that the excellent cesium ion exchange properties are well-maintained despite acidic, basic, and competitive multiple-component environments. More importantly, the Cs+-exchanged products can be easily eluted and regenerated by a low-cost and eco-friendly method. These merits demonstrated by K@GaSnS-1 render it very promising in the effective and efficient separation of radioactive cesium from nuclear waste.

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Section: Resultsmentioning

confidence: 51%

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 97%

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Rapid and Selective Uptake of Radioactive Cesium from Water by a Microporous Zeolitic-like Sulfide

Yan

Zhang

et al. 2023

Inorg. Chem.

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“…Recent studies have shown that the production of "Clean" plant products and milk in the areas with contamination density of cesium-137 higher 15 Ci/km 2 is practically impossible without a set of measures, for example, the use of radionuclide sorbents (Green and Dodd, 1988;Zach and Mayoh, 1984;Alexakhin et al, 1991;Rahman et al, 2007;Melki and Sallami, 2008;Khotimchenko et al, 2014). Meanwhile, in the territories contaminated with cesium-137 of 40 Ci/km 2 or more, the beef production that meets the requirements of permissible limits is quite possible with technology of beef cattle "Cow-calf", followed by raising and fattening in a feedlot or in a complex.…”

Section: Introductionmentioning

confidence: 99%

Method for Producing Environmentally Safe Meat in Radioactively Contaminated Area

Gorlov¹,

Левахин²,

Azhmuldino³

et al. 2015

Asian J. of Animal Sciences

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The purpose of this research was to study the possibility of cattle breeding in a radioactively contaminated area and to develop methods of purifying the animal body from cesium-137 before slaughter to obtain environmentally safe meat. Experiments were conducted on 4 groups of calves of Simmental breed grown with the cows and after weaning in a feedlot or in a fattening complex. The density of radioactive contamination by cesium-137 in the core sector was up to 925 kBq/m 2 , out at grass 851-1110 kBq/m 2 , in the "Clean" area, where the fattening complex was located to 185 kBq/m 2. For the period of cleaning the calves-body with clean feeds, the decrease multiplicity of the cesium-137 content in comparison with the control was 17.0-33.7 times, respectively. Similar results were obtained in the study of animal internal organs (heart, liver, lungs and kidneys). The meat production was safe for use in human food.

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Reversible and Efficient Sequestration of Cesium from Water by the Layered Metal Thiophosphate K_0.48Mn_0.76PS₃⋅H₂O

Rathore

Pal

Biswas

2017

Chemistry A European J

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Water body contamination with radioactive species is an important issue due to significant developments in nuclear energy. Cesium ( Cs) radioisotope is a non-actinide fission product of uranium and plutonium that is long-lived. Hence, selective removal/capture of cesium is essential for managing radioactive waste. Herein, a detailed Cs ion-exchange study on a potassium intercalated layered metal thiophosphate, K Mn PS ⋅H O (K-MPS-1), is reported. The sorption of Cs by K-MPS-1 follows the Langmuir model with a high capacity of 337.5 mg g and high distribution coefficients in the order of about 10 mL g . K-MPS-1 can sequester Cs efficiently, even from very low concentrations (ppb level). K-MPS-1 exhibits high cesium uptake over a broad pH range of 2-12 and the ion-exchange process reaches equilibrium within a short time (≈15 min), following pseudo-second-order kinetics. Moreover, K-MPS-1 demonstrates selectivity towards Cs capture in the presence of complex solutions containing excess Na , Ca , and Mg ions; this is due to favorable interactions between Cs (soft Lewis acid) and S (soft Lewis base). K-MPS-1 reversibly captures Cs and it can be regenerated by treating Cs-MPS-1 with a solution of KCl.

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Removal of Cesium from Aqueous Solutions by Sodium and Calcium Alginates

Cited by 20 publications

References 15 publications

Rapid and Selective Uptake of Radioactive Cesium from Water by a Microporous Zeolitic-like Sulfide

Rapid and Selective Uptake of Radioactive Cesium from Water by a Microporous Zeolitic-like Sulfide

Method for Producing Environmentally Safe Meat in Radioactively Contaminated Area

Reversible and Efficient Sequestration of Cesium from Water by the Layered Metal Thiophosphate K_0.48Mn_0.76PS₃⋅H₂O

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Removal of Cesium from Aqueous Solutions by Sodium and Calcium Alginates

Cited by 20 publications

References 15 publications

Rapid and Selective Uptake of Radioactive Cesium from Water by a Microporous Zeolitic-like Sulfide

Rapid and Selective Uptake of Radioactive Cesium from Water by a Microporous Zeolitic-like Sulfide

Method for Producing Environmentally Safe Meat in Radioactively Contaminated Area

Reversible and Efficient Sequestration of Cesium from Water by the Layered Metal Thiophosphate K0.48Mn0.76PS3⋅H2O

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Reversible and Efficient Sequestration of Cesium from Water by the Layered Metal Thiophosphate K_0.48Mn_0.76PS₃⋅H₂O