{"title":"基于氧化锰（III,IV）的 MDM 吸附剂：锶和镭放射性核素的生产、吸附特性以及在液体放射性废物净化中的应用","authors":"V. V. Milyutin, O. A. Kononenko, N. A. Nekrasova","doi":"10.1134/S106636222404009X","DOIUrl":null,"url":null,"abstract":"<p>The optimal conditions for the synthesis of a pelletized sorbent based on mixed Mn(III, IV) oxide by reacting aqueous solutions of MnSO<sub>4</sub> and KMnO<sub>4</sub> in an alkaline medium were determined: Mn<sup>2+</sup>/MnO<sub>4</sub><sup>–</sup> molar ratio 1.70–1.80; pH of the reaction mixture 11.0–12.5; calcination temperature 220°C. For the sorbent fabricated under optimal conditions, the values of the distribution coefficient (<i>K</i><sub>d</sub>) of <sup>90</sup>Sr in 0.01 M CaCl<sub>2</sub> solution, static exchange capacity for calcium, hydromechanical strength of granules, and <i>K</i><sub>d</sub> of <sup>90</sup>Sr as a function of the concentration of sodium and calcium ions were established. The sorbent afforded higher sorption characteristics with respect to strontium compared to known sorbents. A technology for producing pilot batches of the sorbent named MDM, was developed. Examples of the use of the MDM sorbent for the purification of various types of liquid radioactive waste from strontium and radium radionuclides are reported.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 4","pages":"473 - 480"},"PeriodicalIF":0.9000,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Manganese(III,IV) Oxide-Based MDM Sorbent: Production, Sorption Characteristics, and Application for Purification of Liquid Radioactive Waste from Strontium and Radium Radionuclides\",\"authors\":\"V. V. Milyutin, O. A. Kononenko, N. A. Nekrasova\",\"doi\":\"10.1134/S106636222404009X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The optimal conditions for the synthesis of a pelletized sorbent based on mixed Mn(III, IV) oxide by reacting aqueous solutions of MnSO<sub>4</sub> and KMnO<sub>4</sub> in an alkaline medium were determined: Mn<sup>2+</sup>/MnO<sub>4</sub><sup>–</sup> molar ratio 1.70–1.80; pH of the reaction mixture 11.0–12.5; calcination temperature 220°C. For the sorbent fabricated under optimal conditions, the values of the distribution coefficient (<i>K</i><sub>d</sub>) of <sup>90</sup>Sr in 0.01 M CaCl<sub>2</sub> solution, static exchange capacity for calcium, hydromechanical strength of granules, and <i>K</i><sub>d</sub> of <sup>90</sup>Sr as a function of the concentration of sodium and calcium ions were established. The sorbent afforded higher sorption characteristics with respect to strontium compared to known sorbents. A technology for producing pilot batches of the sorbent named MDM, was developed. Examples of the use of the MDM sorbent for the purification of various types of liquid radioactive waste from strontium and radium radionuclides are reported.</p>\",\"PeriodicalId\":747,\"journal\":{\"name\":\"Radiochemistry\",\"volume\":\"66 4\",\"pages\":\"473 - 480\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2024-10-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiochemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S106636222404009X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S106636222404009X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Manganese(III,IV) Oxide-Based MDM Sorbent: Production, Sorption Characteristics, and Application for Purification of Liquid Radioactive Waste from Strontium and Radium Radionuclides
The optimal conditions for the synthesis of a pelletized sorbent based on mixed Mn(III, IV) oxide by reacting aqueous solutions of MnSO4 and KMnO4 in an alkaline medium were determined: Mn2+/MnO4– molar ratio 1.70–1.80; pH of the reaction mixture 11.0–12.5; calcination temperature 220°C. For the sorbent fabricated under optimal conditions, the values of the distribution coefficient (Kd) of 90Sr in 0.01 M CaCl2 solution, static exchange capacity for calcium, hydromechanical strength of granules, and Kd of 90Sr as a function of the concentration of sodium and calcium ions were established. The sorbent afforded higher sorption characteristics with respect to strontium compared to known sorbents. A technology for producing pilot batches of the sorbent named MDM, was developed. Examples of the use of the MDM sorbent for the purification of various types of liquid radioactive waste from strontium and radium radionuclides are reported.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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