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137Cs Sorption on the Loams of the Republic of Belarus 137Cs关于白俄罗斯共和国土地的吸收
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050114
A. A. Baklay, N. A. Makovskaya, T. G. Leontieva, D. A. Kuzmuk, A. S. Onischuk, L. N. Mаskalchuk
{"title":"137Cs Sorption on the Loams of the Republic of Belarus","authors":"A. A. Baklay,&nbsp;N. A. Makovskaya,&nbsp;T. G. Leontieva,&nbsp;D. A. Kuzmuk,&nbsp;A. S. Onischuk,&nbsp;L. N. Mаskalchuk","doi":"10.1134/S1066362224050114","DOIUrl":"10.1134/S1066362224050114","url":null,"abstract":"<p>It was established that the content of the main clay minerals in the loam sample from the Fanipolskoye deposit is 13.6 wt % for montmorillonite and 3.3 wt % for illite. It was determined that the pH of solution in the range of 4–12 has virtually no effect on <sup>137</sup>Cs<sup>+</sup> sorption by the loam. The distribution coefficient (<i>K</i><sub>d</sub>) of <sup>137</sup>Cs for the specified loam sample with a K<sup>+</sup> concentration in the solution of up to 0.01 mol/dm<sup>3</sup> is higher than 10<sup>3</sup> dm<sup>3</sup>/kg, which indicates that the <sup>137</sup>Cs sorption is efficient. The loam contains two types of sorption sites, T<sub>1</sub> and T<sub>2</sub>, with different selectivity and capacity toward Cs<sup>+</sup>. The sorption capacities of sites T<sub>1</sub> and T<sub>2</sub> for Cs are 4.0 × 10<sup>–5</sup> and 1.2 × 10<sup>–2</sup> mol/kg, respectively, and the values of <i>K</i><sub>d</sub> of Cs for these sites differ by a factor of 20 and are 1.6 × 10<sup>4</sup> and 7.9 × 10<sup>2</sup> dm<sup>3</sup>/kg. The loam from the Fanipolskoye deposit is shown to be suitable as a buffer backfill for the disposal site of very low-level radioactive waste from the Belarusian NPP.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"663 - 668"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sorption Statics of Cr(VI), Mo(VI), W(VI), Se(IV) Oxygen Anions by Nanostructured Al2O3||C Composite 纳米Al2O3|| - C复合材料对Cr（VI）、Mo（VI）、W（VI）、Se（IV）氧阴离子的吸附静力学
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050126
Е. V. Polyakov, V. N. Krasilnikov, I. V. Volkov, A. A. Ioshin
{"title":"Sorption Statics of Cr(VI), Mo(VI), W(VI), Se(IV) Oxygen Anions by Nanostructured Al2O3||C Composite","authors":"Е. V. Polyakov,&nbsp;V. N. Krasilnikov,&nbsp;I. V. Volkov,&nbsp;A. A. Ioshin","doi":"10.1134/S1066362224050126","DOIUrl":"10.1134/S1066362224050126","url":null,"abstract":"<p>By the methods of thermodynamic modeling, sorption diagnostics, analysis of particle zeta-potential, and UV-Vis spectrometry the equilibrium conditions of sorption interaction of CrO<sub>4</sub><sup>2–</sup>, MoO<sub>4</sub><sup>2–</sup>, WO<sub>4</sub><sup>2–</sup>, SeO<sub>3</sub><sup>2–</sup> oxygen anions in the region of chemical stability of Al<sub>2</sub>O<sub>3</sub>||C composite have been analyzed. The anion sorption isotherms are shown to follow the Langmuir model for a monoenergetic sorbent. The Henry region is observed at concentrations less than 1 μM. According to the established mechanism of surface complexation, the value of anions protonation constant (<i>K</i><sub>1</sub>) in the investigated pH range determines the sorption activity of the composite to these anions. This explains the correlation found between the ratio of parameters of acid–base sites {Al–O<sup>–</sup>}, {Al–HO<sup>0</sup>}, and {Al–OH<sub>2</sub><sup>+</sup>} of composite <i>K</i><sub>M</sub>(1,2) and the protonation constant of anion <i>K</i><sub>1</sub>. It is shown that the Al<sub>2</sub>O<sub>3</sub>||C composite concentrates from dilute solutions both cations of <i>d</i>-, <i>f</i>-elements and oxygen anions of <i>d</i>-elements with the value of log <i>K</i><sub>d</sub> [mL/g] &gt; 4, thereby exhibiting the properties of collective action sorbent.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"669 - 678"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal Degradation of Organic Compounds in Radioactive Suspensions 放射性悬浮液中有机化合物的热降解
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050138
P. A. Bobrov, N. V. Silich, N. P. Starovoitov, S. V. Korenev
{"title":"Thermal Degradation of Organic Compounds in Radioactive Suspensions","authors":"P. A. Bobrov,&nbsp;N. V. Silich,&nbsp;N. P. Starovoitov,&nbsp;S. V. Korenev","doi":"10.1134/S1066362224050138","DOIUrl":"10.1134/S1066362224050138","url":null,"abstract":"<p>Thermal degradation of radioactive concentrates in the oxidizing medium at temperatures of up to 900°C was studied by DSC–TG. The presence of significant amounts of organic compounds in the concentrates was confirmed. The degradation of organic compounds in the concentrates occurs in steps and is accompanied by thermal effects in the temperature range 170–900°С. Oxidative treatment of the concentrate with Fenton’s reagent decreases the content of organic compounds by a factor of 2–5. High-temperature drying of the concentrate at a temperature higher than 450°С allows virtually complete removal of organic compounds from the waste, which improves the safety of the long-term waste storage. The concentrate weight loss decreases as the drying temperature is increased. The high-temperature drying opens prospects for preparing compounds that will be safer from the viewpoint of final disposal.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"679 - 688"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Statistical Evaluation of the Chemical Analysis, Magnetic Properties, and Radioactive Factors in Sand from the Cauvery and Palar Rivers, Tamil Nadu, India 印度泰米尔纳德邦Cauvery河和Palar河沙的化学分析、磁性和放射性因素的统计评价
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050217
A. Gayathri, S. Murugesan
{"title":"A Statistical Evaluation of the Chemical Analysis, Magnetic Properties, and Radioactive Factors in Sand from the Cauvery and Palar Rivers, Tamil Nadu, India","authors":"A. Gayathri,&nbsp;S. Murugesan","doi":"10.1134/S1066362224050217","DOIUrl":"10.1134/S1066362224050217","url":null,"abstract":"<p>The Cauvery and Palar are two significant rivers in Tamil Nadu, India. These rivers produce electricity and water for drinking and irrigation and provide sand for building construction. Uranium, thorium, and potassium are examples of naturally occurring radioactive elements that have been studied for Cauvery and Palar river soil. The radiation levels and possible human exposure were measured using specialized equipment. The annual radiation dose and the amount of radiation that the body absorbs both indoors and outdoors were other factors examined in the study. Several risk indicators were also evaluated to determine the possible health risks associated with this radiation. According to the study, most of radioactive levels in the rivers fall within the usual range compared to worldwide averages. It indicates that there is no substantial radioactive risk in the Cauvery River (except from site number 20). The radiation levels in site no. 6 of Palar River are three times higher than the global average, indicating a slight increase in radiation levels. Metals including copper, zinc, nickel, chromium, and iron were also examined. The correlations between these elements in the riverbeds with magnetic characteristics, radiation exposure levels, and possible dangers was also studied. The comprehension of the distribution of radiation and its relationship to other environmental factors was aided by this analysis.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"752 - 763"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sorption of Uranium, Neptunium, and Plutonium onto Pyrite, Siderite, and Hematite after Their Microbial Transformation under the Conditions of Upper Aquifers 上含水层条件下微生物转化后的铀、镎、钚在黄铁矿、菱铁矿和赤铁矿上的吸附
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050230
G. D. Artem’ev, Yu. V. Konevnik, A. P. Novikov, A. V. Safonov
{"title":"Sorption of Uranium, Neptunium, and Plutonium onto Pyrite, Siderite, and Hematite after Their Microbial Transformation under the Conditions of Upper Aquifers","authors":"G. D. Artem’ev,&nbsp;Yu. V. Konevnik,&nbsp;A. P. Novikov,&nbsp;A. V. Safonov","doi":"10.1134/S1066362224050230","DOIUrl":"10.1134/S1066362224050230","url":null,"abstract":"<p>The influence of microorganisms collected from observation wells near the conserved liquid radioactive waste (RW) repository, B-2 reservoir, of the Siberian Chemical Combine on the immobilization of uranium, plutonium, and neptunium on pyrite, siderite, and goethite was studied. The results of laboratory experiments and thermodynamic simulation data show that the microbial transformation of iron-bearing minerals leads to an increase in the immobilization of actinides due to the appearance of new biogenic iron oxide/hydroxide/carbonate and iron sulfide mineral phases.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"774 - 781"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Support Loading Effect on Extraction Chromatography Separation of Ytterbium and Lutetium Using 2-Ethylhexylphosphonic Acid Mono-2-ethylhexyl Ester Based Sorbent 载体负载对2-乙基己基膦酸单-2-乙基己基酯基吸附剂萃取色谱分离镱和镥的影响
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050072
K. S. Bobrovskaya, R. A. Kuznetsov, M. N. Lisova, A. N. Fomin
{"title":"Support Loading Effect on Extraction Chromatography Separation of Ytterbium and Lutetium Using 2-Ethylhexylphosphonic Acid Mono-2-ethylhexyl Ester Based Sorbent","authors":"K. S. Bobrovskaya,&nbsp;R. A. Kuznetsov,&nbsp;M. N. Lisova,&nbsp;A. N. Fomin","doi":"10.1134/S1066362224050072","DOIUrl":"10.1134/S1066362224050072","url":null,"abstract":"<p>The effect of the extractant content on the efficiency of ytterbium and lutetium separation from nitric acid solutions was studied for a sorbent made by impregnating Prefilter resin with 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester. It is shown that the distribution ratios of Yb and Lu and their retention coefficients in the column increase as the extractant content increases. At the nitric acid concentration of 1.5 M, the effective separation of Yb and Lu is provided by the sorbent containing at least 40 wt % extractant. When separating equal amounts of Yb and Lu (0.5 mg each) in a column with 10 cm<sup>3</sup> of sorbent at an elution rate of 1 mL/min and a temperature of 50°C, the yield of lutetium in the purified fraction exceeds 85%, providing Yb relative content in the Lu fraction less than 0.14% (1 atom of Yb per 700 atoms of Lu).</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"639 - 649"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Erratum to: Preparation of High-Labeled Graphene Oxide by Tritium Thermal Activation Method Application for in the Betavoltaic Cell of a Nuclear Battery 用氚热活化法制备高标记氧化石墨烯在核电池倍他伏打电池中的应用
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050241
G. A. Badun, V. A. Bunyaev, M. G. Chernysheva
{"title":"Erratum to: Preparation of High-Labeled Graphene Oxide by Tritium Thermal Activation Method Application for in the Betavoltaic Cell of a Nuclear Battery","authors":"G. A. Badun,&nbsp;V. A. Bunyaev,&nbsp;M. G. Chernysheva","doi":"10.1134/S1066362224050241","DOIUrl":"10.1134/S1066362224050241","url":null,"abstract":"","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"786 - 786"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1066362224050241.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of LaF3 and ThF4 Sorption under Column Conditions in the LiF–NaF–KF–Activated Carbon System lif - naf - kf -活性炭体系柱条件下对LaF3和ThF4吸附的研究
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050084
Yu. S. Fedorov, V. V. Samonin, A. S. Zotov
{"title":"Investigation of LaF3 and ThF4 Sorption under Column Conditions in the LiF–NaF–KF–Activated Carbon System","authors":"Yu. S. Fedorov,&nbsp;V. V. Samonin,&nbsp;A. S. Zotov","doi":"10.1134/S1066362224050084","DOIUrl":"10.1134/S1066362224050084","url":null,"abstract":"<p>Sorption of neodymium, lanthanum and thorium fluorides from melt under column conditions using AG-3 activated carbon at a temperature of 650°C was studied for the first time. The known eutectic mixture of alkali metal fluorides LiF–NaF–KF was employed as a melt. A special setup for studying the sorption process under column conditions was developed and created for the experiments. Three main sections were identified in the process of sorption of neodymium and lanthanum fluorides: the sorption front formation zone, sorption and breakthrough zones. It was shown that under the considered conditions, purification of thorium fluoride from lanthanum fluoride is possible. The sorption capacity towards lanthanum fluoride more than 5 mg/g at its maximum reached and depended on the melt flow rate through the activated carbon zone. Thorium fluoride was not sorbed by activated carbon under the studied conditions.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"650 - 655"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Erratum to: Nanodiamonds as Lutetium-177 Carriers for Nuclear Medicine 核医学中作为镥-177载体的纳米金刚石的勘误
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050253
A. G. Kazakov, J. S. Babenya, T. Y. Ekatova, S. E. Vinokurov, E. Y. Khvorostinin, I. A. Ushakov, V. V. Zukau, E. S. Stasyuk, E. A. Nesterov, V. L. Sadkin, A. S. Rogov, B. F. Myasoedov
{"title":"Erratum to: Nanodiamonds as Lutetium-177 Carriers for Nuclear Medicine","authors":"A. G. Kazakov,&nbsp;J. S. Babenya,&nbsp;T. Y. Ekatova,&nbsp;S. E. Vinokurov,&nbsp;E. Y. Khvorostinin,&nbsp;I. A. Ushakov,&nbsp;V. V. Zukau,&nbsp;E. S. Stasyuk,&nbsp;E. A. Nesterov,&nbsp;V. L. Sadkin,&nbsp;A. S. Rogov,&nbsp;B. F. Myasoedov","doi":"10.1134/S1066362224050253","DOIUrl":"10.1134/S1066362224050253","url":null,"abstract":"","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"785 - 785"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1066362224050253.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Results of Monitoring the Radioactive Contamination of Surface Water Bodies in the Surveillance Zone of the Mayak Production Association in 2023 2023年马雅克生产协会监测区地表水体放射性污染监测结果
IF 0.9
Radiochemistry Pub Date : 2024-12-11 DOI: 10.1134/S1066362224050199
Yu. G. Mokrov, I. V. Golubtsova, V. M. Kochegorov
{"title":"Results of Monitoring the Radioactive Contamination of Surface Water Bodies in the Surveillance Zone of the Mayak Production Association in 2023","authors":"Yu. G. Mokrov,&nbsp;I. V. Golubtsova,&nbsp;V. M. Kochegorov","doi":"10.1134/S1066362224050199","DOIUrl":"10.1134/S1066362224050199","url":null,"abstract":"<p>A brief hydrographic description of the Techa River and main radionuclide-contaminated water bodies (WBs) located in the surveillance zone of the Mayak Production Association is made. Along with the Mayak Production Association, two other independent institutions monitor the radioactive contamination of these WBs. The results of monitoring the contamination of surface WBs, obtained by all the participating institutions in 2023, are presented in comparison with the results obtained in 2021–2022. With respect to the majority of the parameters monitored, the radioactive contamination of WBs is considerably lower than the interference level. In 2023, the discharge of radionuclides (<sup>90</sup>Sr) into the open hydrographic network of the Techa River was 0.24% of the established limit of permissible discharges.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"66 5","pages":"732 - 742"},"PeriodicalIF":0.9,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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