Physical and chemical regularities of cesium and strontium recovery from the seawater by sorbents of various types

Bezhin, N. A.; Dovhyi, I. I.; Tokar, Eduard; Тананаев, И. Г.

doi:10.1007/s10967-021-08027-w

Cited by 13 publications

(11 citation statements)

References 44 publications

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“…This paper continues the work performed in a series of articles [18,[22][23][24] devoted to the recovery of cesium, including 137 Cs, from seawater by various types of sorbents based on transition metal ferrocyanides (Anfezh, Niket, Uniket, FSS, FD-M, Termoxid 35, NKF-C, FIC), resorcinol-formaldehyde polymer (Axionit RCs), and zirconium phosphate (Termoxid 3A).…”

Section: Introductionsupporting

confidence: 54%

“…A study was performed on the physicochemical regularities (isotherm and kinetics) of cesium sorption from seawater. The obtained dependences of the sorption parameters on time were described using the models of intraparticle diffusion; the pseudo-first and pseudo-second orders, the Elovich model, the dependence of sorption parameters on the equilibrium concentration of the metal in the solution; and the Langmuir, Freundlich, and Dubinin-Raduskevich sorption isotherms [24].…”

Section: Introductionmentioning

confidence: 99%

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Estimation of 137Cs Distribution and Recovery Using Various Types of Sorbents in the Black Sea Surface Layer

et al. 2023

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Monitoring 137Cs in seawater is necessary for the timely detection of radioactive contamination. The possibility of sorption and the sorption efficiency of 137Cs from seawater were studied for the first time during several cruises of the R/V (research vessel) Professor Vodyanitsky using various types of sorbents based on transition metal ferrocyanides (Anfezh, Niket, Uniket, FSS, FD-M, FIC, Termoxid 35, NKF-C) and zirconium phosphate (Termoxid 3A). The influence of the seawater flow rate and volume of the sorbent used for the recovery of 137Cs was estimated. The ferrocyanide sorbents Niket, Uniket, Termoxid 35, and FIC showed the best sorption efficiency (60–100%) at a seawater flow rate of 2–4 column volumes per minute. The data obtained during three cruises on the R/V Professor Vodyanitsky were analyzed. A detailed (28 sampling points) spatial distribution of 137Cs in the Black Sea along the southern coast of Crimea was studied using the sorbents that showed the best characteristics. An increase in 137Cs activity in the study area was not found, and the average activity was 9.01 ± 0.87 Bq/m3.

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Section: Introductionsupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Estimation of 137Cs Distribution and Recovery Using Various Types of Sorbents in the Black Sea Surface Layer

et al. 2023

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“…These values are of the same order of magnitude as the apparent rate coefficients reported for Dowex 50W-X8 (i.e., 0.0214 min −1 , [ 36 ]) but higher than for surfactant-conditioned polyacrylonitrile (i.e., 0.0022 min −1 , [ 64 ]) or for biochar and magnetic biochar (i.e., 0.0047 and 0.0077 min −1 , respectively, [ 65 ]). Bezhin et al [ 66 ] reported much lower values for Sr(II) sorption kinetics using a series of resins and ion-exchangers (i.e., in the range 0.0015–0.0024 min −1 ). It is noteworthy that in most of these studies the PSORE gave better fitting of kinetic curves than the PFORE.…”

Section: Resultsmentioning

confidence: 99%

“…The complexity of the solutions strongly decreases the mass transfer properties: (a) for Sr(II) and B(III) a short lag phase lasting for 2–3 h occurs before the concentrations decrease (not observed with uranyl), and (b) reaching the equilibrium requires about 24 h of contact. Bezhin et al [ 66 ] compared different sorbents for the recovery of Cs(I) and Sr(II) from seawater; they also reported quite slow kinetics (in most cases equilibrium was reached after more than 24 h of agitation, especially for strontium removal); the faster Sr(II) uptake was reported for copper potassium ferrocyanide supported on phosphorylated wood. In the case of Sr(II) sorption from seawater using alginate microspheres, Hong et al observed also slow kinetics: 6 h are necessary (with high SD: 2 g L −1 ; herein the SD: 0.2 g L −1 ).…”

Section: Resultsmentioning

confidence: 99%

“…Kirishima et al [ 82 ] discussed the speciation of strontium in seawater; they concluded that the metal may coexist under two forms sulfate “aquo” complex (i.e., SrSO 4aq , ≈60%) and free Sr 2+ (≈40%). Bezhin et al [ 66 ] summarized the maximum sorption capacities of three sorbents for Sr(II) removal from seawater. In the case of nanostructured crystalline hydroxyapatite, they found a capacity close to 0.21 mg Sr g −1 ; for biogenic amorphous hydroxyapatite they cite a capacity close to 2.3 mg Sr g −1 .…”

Section: Resultsmentioning

confidence: 99%

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New Process for the Sulfonation of Algal/PEI Biosorbent for Enhancing Sr(II) Removal from Aqueous Solutions—Application to Seawater

Hamza

Guibal²,

Althumayri

et al. 2022

Molecules

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Sulfonic resins are highly efficient cation exchangers widely used for metal removal from aqueous solutions. Herein, a new sulfonation process is designed for the sulfonation of algal/PEI composite (A*PEI, by reaction with 2-propylene-1-sulfonic acid and hydroxylamine-O-sulfonic acid). The new sulfonated functionalized sorbent (SA*PEI) is successfully tested in batch systems for strontium recovery first in synthetic solutions before investigating with multi-component solutions and final validation with seawater samples. The chemical modification of A*PEI triples the sorption capacity for Sr(II) at pH 4 with a removal rate of up to 7% and 58% for A*PEI and SA*PEI, respectively (with SD: 0.67 g L−1). FTIR shows the strong contribution of sulfonate groups for the functionalized sorbent (in addition to amine and carboxylic groups from the support). The sorption is endothermic (increase in sorption with temperature). The sulfonation improves thermal stability and slightly enhances textural properties. This may explain the fast kinetics (which are controlled by the pseudo-first-order rate equation). The sulfonated sorbent shows a remarkable preference for Sr(II) over competitor mono-, di-, and tri-valent metal cations. Sorption properties are weakly influenced by the excess of NaCl; this can explain the outstanding sorption properties in the treatment of seawater samples. In addition, the sulfonated sorbent shows excellent stability at recycling (for at least 5 cycles), with a loss in capacity of around 2.2%. These preliminary results show the remarkable efficiency of the sorbent for Sr(II) removal from complex solutions (this could open perspectives for the treatment of contaminated seawater samples).

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The effect of organic impurities on the efficiency of strontium removal by sorbents based on manganese oxide

Matskevich

Tokar

Markin

et al. 2022

J Radioanal Nucl Chem

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Physical and chemical regularities of cesium and strontium recovery from the seawater by sorbents of various types

Cited by 13 publications

References 44 publications

Estimation of 137Cs Distribution and Recovery Using Various Types of Sorbents in the Black Sea Surface Layer

Estimation of 137Cs Distribution and Recovery Using Various Types of Sorbents in the Black Sea Surface Layer

New Process for the Sulfonation of Algal/PEI Biosorbent for Enhancing Sr(II) Removal from Aqueous Solutions—Application to Seawater

The effect of organic impurities on the efficiency of strontium removal by sorbents based on manganese oxide

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