Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents
To solve radioecological and oceanological problems (estimate the vertical transport, flows of particulate organic carbon, phosphorus biodynamics, submarine groundwater discharge, etc.), it is necessary to determine the natural values of the radionuclides’ activity in seawater and particulate matter...
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2023-06-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/11/4181 |
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| author | Nikolay A. Bezhin Vitaliy V. Milyutin Natalia V. Kuzmenkova Iuliia G. Shibetskaia Ol’ga N. Kozlovskaia Evgeniy V. Slizchenko Victoria A. Razina Ivan G. Tananaev |
| author_facet | Nikolay A. Bezhin Vitaliy V. Milyutin Natalia V. Kuzmenkova Iuliia G. Shibetskaia Ol’ga N. Kozlovskaia Evgeniy V. Slizchenko Victoria A. Razina Ivan G. Tananaev |
| author_sort | Nikolay A. Bezhin |
| collection | DOAJ |
| description | To solve radioecological and oceanological problems (estimate the vertical transport, flows of particulate organic carbon, phosphorus biodynamics, submarine groundwater discharge, etc.), it is necessary to determine the natural values of the radionuclides’ activity in seawater and particulate matter. For the first time, the radionuclides’ sorption from seawater was studied using sorbents based on activated carbon modified with iron(III) ferrocyanide (FIC) and based on activated carbon modified with iron(III) hydroxide (FIC A—activated FIC) obtained by FIC sorbent treatment with sodium hydroxide solution. The possibility of trace amounts of phosphorus, beryllium, and cesium recovery in laboratory conditions has been investigated. Distribution coefficients, dynamic, and total dynamic exchange capacities were determined. The physicochemical regularities (isotherm and kinetics) of sorption have been studied. The results obtained are characterized via Langmuir, Freindlich, and Dubinin–Radushkevich isotherm equations, as well as pseudo-first and pseudo-second-order kinetic models, intraparticle diffusion, and the Elovich model. Under expeditionary conditions, the sorption efficiency of <sup>137</sup>Cs using FIC sorbent, <sup>7</sup>Be, <sup>32</sup>P, and <sup>33</sup>P—using FIC A sorbent with a single-column method by adding a stable tracer, as well as the sorption efficiency of radionuclides <sup>210</sup>Pb and <sup>234</sup>Th with their natural content by FIC A sorbent in a two-column mode from large volumes of seawater was assessed. High values of efficiency of their recovery by the studied sorbents were achieved. |
| first_indexed | 2024-03-11T03:02:42Z |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T03:02:42Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-7ef7e513e7be4e3aa0ddf7fbf4b929cc2023-11-18T08:11:22ZengMDPI AGMaterials1996-19442023-06-011611418110.3390/ma16114181Radionuclides’ Recovery from Seawater Using FIC and FIC A SorbentsNikolay A. Bezhin0Vitaliy V. Milyutin1Natalia V. Kuzmenkova2Iuliia G. Shibetskaia3Ol’ga N. Kozlovskaia4Evgeniy V. Slizchenko5Victoria A. Razina6Ivan G. Tananaev7Department of Biogeochemistry, Marine Hydrophysical Institute, Russian Academy of Sciences (MHI RAS), Kapitanskaya Str., 2, 299011 Sevastopol, RussiaLaboratory of Chromatography of Radioactive Elements, Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), 31 Leninsky Prospect, 4, 119071 Moscow, RussiaDepartment of Radiochemistry, Lomonosov Moscow State University, 1 Leninskiye Gory, 3, 119991 Moscow, RussiaDepartment of Biogeochemistry, Marine Hydrophysical Institute, Russian Academy of Sciences (MHI RAS), Kapitanskaya Str., 2, 299011 Sevastopol, RussiaDepartment of Biogeochemistry, Marine Hydrophysical Institute, Russian Academy of Sciences (MHI RAS), Kapitanskaya Str., 2, 299011 Sevastopol, RussiaDepartment of Biogeochemistry, Marine Hydrophysical Institute, Russian Academy of Sciences (MHI RAS), Kapitanskaya Str., 2, 299011 Sevastopol, RussiaDepartment of Biogeochemistry, Marine Hydrophysical Institute, Russian Academy of Sciences (MHI RAS), Kapitanskaya Str., 2, 299011 Sevastopol, RussiaDepartment of Chemistry and Chemical Engineering, Sevastopol State University, Universitetskaya Str., 33, 299053 Sevastopol, RussiaTo solve radioecological and oceanological problems (estimate the vertical transport, flows of particulate organic carbon, phosphorus biodynamics, submarine groundwater discharge, etc.), it is necessary to determine the natural values of the radionuclides’ activity in seawater and particulate matter. For the first time, the radionuclides’ sorption from seawater was studied using sorbents based on activated carbon modified with iron(III) ferrocyanide (FIC) and based on activated carbon modified with iron(III) hydroxide (FIC A—activated FIC) obtained by FIC sorbent treatment with sodium hydroxide solution. The possibility of trace amounts of phosphorus, beryllium, and cesium recovery in laboratory conditions has been investigated. Distribution coefficients, dynamic, and total dynamic exchange capacities were determined. The physicochemical regularities (isotherm and kinetics) of sorption have been studied. The results obtained are characterized via Langmuir, Freindlich, and Dubinin–Radushkevich isotherm equations, as well as pseudo-first and pseudo-second-order kinetic models, intraparticle diffusion, and the Elovich model. Under expeditionary conditions, the sorption efficiency of <sup>137</sup>Cs using FIC sorbent, <sup>7</sup>Be, <sup>32</sup>P, and <sup>33</sup>P—using FIC A sorbent with a single-column method by adding a stable tracer, as well as the sorption efficiency of radionuclides <sup>210</sup>Pb and <sup>234</sup>Th with their natural content by FIC A sorbent in a two-column mode from large volumes of seawater was assessed. High values of efficiency of their recovery by the studied sorbents were achieved.https://www.mdpi.com/1996-1944/16/11/4181FICradionuclidesseawatersorptiondynamicskinetics |
| spellingShingle | Nikolay A. Bezhin Vitaliy V. Milyutin Natalia V. Kuzmenkova Iuliia G. Shibetskaia Ol’ga N. Kozlovskaia Evgeniy V. Slizchenko Victoria A. Razina Ivan G. Tananaev Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents Materials FIC radionuclides seawater sorption dynamics kinetics |
| title | Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents |
| title_full | Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents |
| title_fullStr | Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents |
| title_full_unstemmed | Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents |
| title_short | Radionuclides’ Recovery from Seawater Using FIC and FIC A Sorbents |
| title_sort | radionuclides recovery from seawater using fic and fic a sorbents |
| topic | FIC radionuclides seawater sorption dynamics kinetics |
| url | https://www.mdpi.com/1996-1944/16/11/4181 |
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