Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic Sorbents
The present study examines the sorption of Cs (I) and Sr (II) on organic sorbents in the pH range from 2 to 10, as well as the mechanisms of their binding. In order to determine the influence of the physical properties and the quantity of functional groups of the organic sorbents on sorption, experi...
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MDPI AG
2021-12-01
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| author | Petr Belousov Anna Semenkova Yulia Izosimova Inna Tolpeshta Anna Romanchuk Sergey Zakusin Ekaterina Tyupina Victoria Krupskaya |
| author_facet | Petr Belousov Anna Semenkova Yulia Izosimova Inna Tolpeshta Anna Romanchuk Sergey Zakusin Ekaterina Tyupina Victoria Krupskaya |
| author_sort | Petr Belousov |
| collection | DOAJ |
| description | The present study examines the sorption of Cs (I) and Sr (II) on organic sorbents in the pH range from 2 to 10, as well as the mechanisms of their binding. In order to determine the influence of the physical properties and the quantity of functional groups of the organic sorbents on sorption, experiments were carried out on organic materials of varying degrees of metamorphism: high-moor peat, hard and brown coals and shungite. A detailed description of their mineral composition, cation exchange capacity, buffering capacity and elemental composition of sorbents is provided. XRD, XRF, SEM and BET adsorption methods were used for assaying. As a result of the conducted research, it can be concluded that Sr (II) showed a higher sorption per unit specific surface area than Cs (I) in the studied range of concentrations and pH values. Sr (II) sorption decreases in the following order: high-moor peat > brown coal > shungite > hard coal. The sorption of Cs (I) is highest on brown coal and lesser for high-moor peat, shungite and hard coal. It is suggested that Cs (I) and Sr (II) can be fixed on carboxyl functional groups and Cs (I), possibly, in insignificant amounts on phenolic hydroxyls of all four studied organic sorbents. |
| first_indexed | 2024-03-10T04:56:26Z |
| format | Article |
| id | doaj.art-a3f6d181625847119b432eb05748faa5 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T04:56:26Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a3f6d181625847119b432eb05748faa52023-11-23T02:09:48ZengMDPI AGApplied Sciences2076-34172021-12-0111231153110.3390/app112311531Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic SorbentsPetr Belousov0Anna Semenkova1Yulia Izosimova2Inna Tolpeshta3Anna Romanchuk4Sergey Zakusin5Ekaterina Tyupina6Victoria Krupskaya7Institute of Ore Geology, Petrography, Mineralogy and Geochemistry, Russian Academy of Science (IGEM RAS), 119017 Moscow, RussiaM.V. Lomonosov Moscow State University, 119991 Moscow, RussiaM.V. Lomonosov Moscow State University, 119991 Moscow, RussiaM.V. Lomonosov Moscow State University, 119991 Moscow, RussiaM.V. Lomonosov Moscow State University, 119991 Moscow, RussiaInstitute of Ore Geology, Petrography, Mineralogy and Geochemistry, Russian Academy of Science (IGEM RAS), 119017 Moscow, RussiaDepartment of High Energy Chemistry and Radioecology, D. Mendeleev University of Chemical Technology of Russia (MUCTR), 125480 Moscow, RussiaInstitute of Ore Geology, Petrography, Mineralogy and Geochemistry, Russian Academy of Science (IGEM RAS), 119017 Moscow, RussiaThe present study examines the sorption of Cs (I) and Sr (II) on organic sorbents in the pH range from 2 to 10, as well as the mechanisms of their binding. In order to determine the influence of the physical properties and the quantity of functional groups of the organic sorbents on sorption, experiments were carried out on organic materials of varying degrees of metamorphism: high-moor peat, hard and brown coals and shungite. A detailed description of their mineral composition, cation exchange capacity, buffering capacity and elemental composition of sorbents is provided. XRD, XRF, SEM and BET adsorption methods were used for assaying. As a result of the conducted research, it can be concluded that Sr (II) showed a higher sorption per unit specific surface area than Cs (I) in the studied range of concentrations and pH values. Sr (II) sorption decreases in the following order: high-moor peat > brown coal > shungite > hard coal. The sorption of Cs (I) is highest on brown coal and lesser for high-moor peat, shungite and hard coal. It is suggested that Cs (I) and Sr (II) can be fixed on carboxyl functional groups and Cs (I), possibly, in insignificant amounts on phenolic hydroxyls of all four studied organic sorbents.https://www.mdpi.com/2076-3417/11/23/11531sorptioncesiumstrontiumorganic sorbentspeatbrown coal |
| spellingShingle | Petr Belousov Anna Semenkova Yulia Izosimova Inna Tolpeshta Anna Romanchuk Sergey Zakusin Ekaterina Tyupina Victoria Krupskaya Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic Sorbents Applied Sciences sorption cesium strontium organic sorbents peat brown coal |
| title | Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic Sorbents |
| title_full | Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic Sorbents |
| title_fullStr | Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic Sorbents |
| title_full_unstemmed | Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic Sorbents |
| title_short | Sorption of <sup>137</sup>Cs and <sup>90</sup>Sr on Organic Sorbents |
| title_sort | sorption of sup 137 sup cs and sup 90 sup sr on organic sorbents |
| topic | sorption cesium strontium organic sorbents peat brown coal |
| url | https://www.mdpi.com/2076-3417/11/23/11531 |
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