Sorption methods in marine radiochemistry

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

doi:10.1070/rcr5015

Cited by 7 publications

(7 citation statements)

References 129 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: 52%

“…They were successfully tested under expeditionary conditions during radioecological monitoring of the Barents and Kara Seas. These sorbents also show a high sorption efficiency for 137 Cs [22].…”

Section: Introductionmentioning

confidence: 88%

“…• Sorbents based on transition metal ferrocyanides (Anfezh, Niket, Uniket, FSS, FD-M, FIC, Termoxid 35, NKF-C) [22,36]: • Sorbents based on zirconium phosphate (Termoxid 3A) [22,37]:…”

Section: Evaluation Of the Sorption Efficiency Of 137 Cs By Various S...mentioning

confidence: 99%

“…In previous articles, we determined the distribution coefficients for cesium and plotted output sorption curves for different seawater flow rates. The dynamic exchange capacity (DEC) and total dynamic exchange capacity (TDEC) of sorbents were determined [22,23].…”

Section: Introductionmentioning

confidence: 99%

“…This paper presents the results of three expedition studies: the 113 (4-29 June 2020), 116 May 2021), and 121 (19 April-14 May 2022) cruises of the R/V Professor Vodyanitsky. Sorbents that showed the best characteristics for cesium recovery, including 137 Cs, from seawater under laboratory conditions were selected for expeditionary studies [18,[22][23][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: 52%

Section: Introductionmentioning

confidence: 88%

“…• Sorbents based on transition metal ferrocyanides (Anfezh, Niket, Uniket, FSS, FD-M, FIC, Termoxid 35, NKF-C) [22,36]: • Sorbents based on zirconium phosphate (Termoxid 3A) [22,37]:…”

Section: Evaluation Of the Sorption Efficiency Of 137 Cs By Various S...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Bezhin

Dovhyi

Tokar

et al. 2021

J Radioanal Nucl Chem

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Estimation of 226Ra and 228Ra Content Using Various Types of Sorbents and Their Distribution in the Surface Layer of the Black Sea

et al. 2023

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Radium isotopes have traditionally been used as tracers of surface and underground fresh waters in land–ocean interactions. The concentration of these isotopes is most effective on sorbents containing mixed oxides of manganese. During the 116 RV Professor Vodyanitsky cruise (22 April–17 May 2021), a study about the possibility and efficiency of 226Ra and 228Ra recovery from seawater using various types of sorbents was conducted. The influence of seawater flow rate on the sorption of 226Ra and 228Ra isotopes was estimated. It was indicated that the Modix, DMM, PAN-MnO2, and CRM-Sr sorbents show the best sorption efficiency at a flow rate of 4–8 column volumes per minute. Additionally, the distribution of biogenic elements (dissolved inorganic phosphorus (DIP), silicic acid, and the sum of nitrates and nitrites), salinity, and 226Ra and 228Ra isotopes was studied in the surface layer of the Black Sea in April–May 2021. Correlation dependencies between the concentration of long-lived radium isotopes and salinity are defined for various areas of the Black Sea. Two processes control the dependence of radium isotope concentration on salinity: conservative mixing of riverine and marine end members and desorption of long-lived radium isotopes when river particulate matter meets saline seawater. Despite the high long-lived radium isotope concentration in freshwater in comparison with that in seawater, their content near the Caucasus shore is lower mainly because riverine waters meet with a great open seawater body with a low content of these radionuclides, and radium desorption processes take place in an offshore area. The 228Ra/226Ra ratio derived from our data displays freshwater inflow spreading over not only the coastal region, but also the deep-sea region. The lowered concentration of the main biogenic elements corresponds to high-temperature fields because of their intensive uptake by phytoplankton. Therefore, nutrients coupled with long-lived radium isotopes trace the hydrological and biogeochemical peculiarities of the studied region.

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Sorption methods in marine radiochemistry

Cited by 7 publications

References 129 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

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

Estimation of 226Ra and 228Ra Content Using Various Types of Sorbents and Their Distribution in the Surface Layer of the Black Sea

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