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Effect of water glass content on the mass loss and radon exhalation of geopolymers based on metakaolin-uranium tailings 水玻璃含量对偏高岭土-铀尾矿地聚合物质量损失和氡析出的影响
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-18 DOI: 10.1007/s10967-025-10033-1
Juan Song, Feilong Pan, Haiyan Liu, Yong Liu
{"title":"Effect of water glass content on the mass loss and radon exhalation of geopolymers based on metakaolin-uranium tailings","authors":"Juan Song,&nbsp;Feilong Pan,&nbsp;Haiyan Liu,&nbsp;Yong Liu","doi":"10.1007/s10967-025-10033-1","DOIUrl":"10.1007/s10967-025-10033-1","url":null,"abstract":"<div><p>In this study, the mass loss and radon exhalation rates of geopolymers prepared using different dosages of sodium silicate and sodium hydroxide as alkali activators, with metakaolin as an admixture and uranium tailings as an aggregate, were examined. The test results showed that the amount of alkali activator in the geopolymer specimens significantly influences these rates. Both rates initially decreased before increasing with the rise in alkali activator content. The influence mechanism of the alkali activator content on the mass loss and radon exhalation rates of geopolymers was elucidated and discussed by utilizing the results of SEM, XRD, and FT-IR.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2681 - 2692"},"PeriodicalIF":1.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adsorption properties and mechanism of copper ferrocyanide/vermiculite composite sodium alginate microspheres on U(VI) in aqueous solution 亚铁氰化铜/蛭石复合海藻酸钠微球对U（VI）的吸附性能及机理
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-15 DOI: 10.1007/s10967-025-10057-7
Leilei Zhang, Liang Huang, Zhiwen Chang, Chunhai Lu
{"title":"Adsorption properties and mechanism of copper ferrocyanide/vermiculite composite sodium alginate microspheres on U(VI) in aqueous solution","authors":"Leilei Zhang,&nbsp;Liang Huang,&nbsp;Zhiwen Chang,&nbsp;Chunhai Lu","doi":"10.1007/s10967-025-10057-7","DOIUrl":"10.1007/s10967-025-10057-7","url":null,"abstract":"<div><p>In this study, novel composite hydrogel microspheres (CuFC-SAVT) were synthesized by incorporating copper ferrocyanide (CuFC), pretreated vermiculite (P-VT), and sodium alginate (SA). The composite microspheres demonstrated superior U(VI) removal efficiency of 90.8% at pH 4.0 and 298.15 K, significantly outperforming the 64.7% achieved by CuFC alone. Kinetic and isotherm studies revealed that the U(VI) adsorption by CuFC-SAVT followed the pseudo-second-order kinetic model and Freundlich isotherm model. The CuFC-SAVT microspheres exhibited multiple advantages, including excellent adsorption performance, facile separation from solution, and environmental friendliness. These findings suggest that CuFC-SAVT holds promising potential for practical applications in uranium-containing wastewater treatment.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2823 - 2837"},"PeriodicalIF":1.5,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
137Cs-to-40K ratio and wind resuspension factor monitoring in Greece during the last forty years 希腊近40年137cs - 40k比值和风再悬浮因子监测
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-15 DOI: 10.1007/s10967-025-10053-x
Stylianos Stoulos, Alexandra Loannidou
{"title":"137Cs-to-40K ratio and wind resuspension factor monitoring in Greece during the last forty years","authors":"Stylianos Stoulos,&nbsp;Alexandra Loannidou","doi":"10.1007/s10967-025-10053-x","DOIUrl":"10.1007/s10967-025-10053-x","url":null,"abstract":"<div><p><sup>137</sup>Cs and <sup>40</sup>K concentrations in soil and air were measured since 1986. <sup>137</sup>Cs wind-resuspension factor was 7.4 ± 1.3 × 10<sup>–6</sup> m<sup>−1</sup> after Chernobyl, while one decade later, it reduced to 1.5 ± 0.3 × 10<sup>–9</sup> m<sup>−1</sup>, but for <sup>40</sup>K was constant 7.4 ± 1.3 × 10<sup>–9</sup> m<sup>−1</sup> The air <sup>137</sup>Cs-to-<sup>40</sup>K ratio was 12:7 after the accident, dropping to 0.04 during 1995. The Fukushima accident gave 1.0, which is like a radiological event in Spain when it was 0.6. The Chernobyl wildfires recorded 0.18, while contaminated wood combustion for heating showed 0.15. The results indicate that forest ecosystems remain a source of unwanted radioactivity in the environment.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2991 - 2996"},"PeriodicalIF":1.5,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-025-10053-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental study on the efficiency of calcium lignosulfonate-modified red clay for radon mitigation 木质素磺酸钙改性红粘土减氡效果的实验研究
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-11 DOI: 10.1007/s10967-025-10029-x
Yonghong Liu, Changshou Hong, Shao Li, Jiayi Xin, De Huang
{"title":"Experimental study on the efficiency of calcium lignosulfonate-modified red clay for radon mitigation","authors":"Yonghong Liu,&nbsp;Changshou Hong,&nbsp;Shao Li,&nbsp;Jiayi Xin,&nbsp;De Huang","doi":"10.1007/s10967-025-10029-x","DOIUrl":"10.1007/s10967-025-10029-x","url":null,"abstract":"<div><p>Management of radon emissions from uranium tailings ponds is crucial for public safety. Calcium lignosulfonate (CaLS)-modified red clay is explored as a radon mitigation material in this study. Experiments showed that a 6% CaLS concentration with a three-day curing period optimized radon adsorption, reduced exhalation rates by 30–47% and blocked up to 98.9% of radon. This modification also enhanced the soil strength. The use of CaLS-modified red clay in tailings dams significantly reduced radon emissions, and lowered health risks.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2861 - 2874"},"PeriodicalIF":1.5,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gamma irradiation induced stabilisation in CuAlNi shape memory alloys γ辐照诱导的CuAlNi形状记忆合金的稳定性
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-11 DOI: 10.1007/s10967-025-10042-0
Ş. Nevin Balo, Abdulvahap Orhan
{"title":"Gamma irradiation induced stabilisation in CuAlNi shape memory alloys","authors":"Ş. Nevin Balo,&nbsp;Abdulvahap Orhan","doi":"10.1007/s10967-025-10042-0","DOIUrl":"10.1007/s10967-025-10042-0","url":null,"abstract":"<div><p>After annealing, gamma irradiation was applied to CuAlNi shape memory alloy samples at different doses and investigated how the stabilization was affected by irradiation. Conversion temperatures and thermodynamic parameters were determined by thermal measurements. Non-regular increases in these parameters were observed depending on the irradiation dose. Depending on the irradiation dose, the structural analyzes of the alloy samples were made with X-ray diffraction. The changes in microhardness and crystallite size of the alloy samples with increasing irradiation dose were investigated. The crystallite size tends to decrease with increasing irradiation dose, and the increase in microhardness favors the change in crystallite size. In results are discussed to the stabilization of martensite by increased irradiation dose in CuAlNi alloys.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2645 - 2656"},"PeriodicalIF":1.5,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-025-10042-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation of the migration behavior of nuclides Sr and Cs in integrated buffer/backfill materials based on COMSOL 基于COMSOL的核素Sr和Cs在综合缓冲/回填材料中的迁移行为模拟
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-07 DOI: 10.1007/s10967-025-10036-y
Duan Tian, Zhe Wang, Jiaqian Zhang, Ying Luo, Zhenlong Zhang, Chao Li, Kai Ye, Chaoliang Peng, Yiming Chen, Wenxue Lin, Jingyan Zhang
{"title":"Simulation of the migration behavior of nuclides Sr and Cs in integrated buffer/backfill materials based on COMSOL","authors":"Duan Tian,&nbsp;Zhe Wang,&nbsp;Jiaqian Zhang,&nbsp;Ying Luo,&nbsp;Zhenlong Zhang,&nbsp;Chao Li,&nbsp;Kai Ye,&nbsp;Chaoliang Peng,&nbsp;Yiming Chen,&nbsp;Wenxue Lin,&nbsp;Jingyan Zhang","doi":"10.1007/s10967-025-10036-y","DOIUrl":"10.1007/s10967-025-10036-y","url":null,"abstract":"<div><p>This study examines attapulgite-bentonite-pyrite (AB<sub>7</sub>Fe) and zeolite-bentonite-pyrite (ZB<sub>7</sub>Fe) mixtures as buffer and backfill materials for nuclide migration using soil column experiments and COMSOL modeling. The results indicated that ZB<sub>7</sub>Fe possessed higher adsorption capacities for cesium (Cs) and strontium (Sr) compared to AB<sub>7</sub>Fe. Conversely, AB<sub>7</sub>Fe demonstrated superior retardation performance, more effectively slowing nuclide migration. After 1000 years, Cs and Sr concentrations in AB<sub>7</sub>Fe surpassed those in ZB<sub>7</sub>Fe. Additionally, nuclide migration increased with higher initiation pressure, dispersion, and diffusion coefficients. This research is crucial for improving the long-term safety of nuclear waste repositories.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2767 - 2782"},"PeriodicalIF":1.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects and mechanism of U(VI) removal by waste kelp biochar loaded with iron-doped zinc oxide (nFe–ZnO) nanoparticles 铁掺杂氧化锌纳米颗粒对废海带生物炭脱除U（VI）的影响及机理
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-07 DOI: 10.1007/s10967-025-10048-8
Qiqi Deng, Mingjuan Zhang, Taotao Zeng, Guohua Wang, Yusong Fu, Zhi Wang, Zhiyu Xiong, Shuibo Xie
{"title":"Effects and mechanism of U(VI) removal by waste kelp biochar loaded with iron-doped zinc oxide (nFe–ZnO) nanoparticles","authors":"Qiqi Deng,&nbsp;Mingjuan Zhang,&nbsp;Taotao Zeng,&nbsp;Guohua Wang,&nbsp;Yusong Fu,&nbsp;Zhi Wang,&nbsp;Zhiyu Xiong,&nbsp;Shuibo Xie","doi":"10.1007/s10967-025-10048-8","DOIUrl":"10.1007/s10967-025-10048-8","url":null,"abstract":"<div><p>This study used kelp to create biochar (BC) and then modified it with iron-doped zinc oxide (nFe–ZnO) to prepare Fe–ZnO@BC. Under optimal conditions, the adsorption capacity of Fe–ZnO@BC for U(VI) was 146.16 mg g<sup>−1</sup>. Freundlich isotherm and quasi-second order kinetic model exhibited excellent fitting to the isotherm and kinetics of uranium adsorption by Fe–ZnO@BC, respectively. The thermodynamic analysis indicated that the U(VI) adsorption process was endothermic and spontaneous. After six adsorption cycles, Fe–ZnO@BC retained its remarkable U(VI) removal performance. Advanced characterization techniques suggested that the main mechanism involved surface adsorption and reduction. These findings imply that Fe–ZnO@BC is a viable adsorbent for wastewater cleanup involving uranium contamination.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2741 - 2755"},"PeriodicalIF":1.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LSNet: efficient nuclide spectrum recognition network LSNet：高效核素谱识别网络
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-07 DOI: 10.1007/s10967-025-10032-2
Pengzhang Yu, Yingrui Hu, Xu Wang, Ying Cai, Daji Ergu, Yong Xu, Shengbo Tan
{"title":"LSNet: efficient nuclide spectrum recognition network","authors":"Pengzhang Yu,&nbsp;Yingrui Hu,&nbsp;Xu Wang,&nbsp;Ying Cai,&nbsp;Daji Ergu,&nbsp;Yong Xu,&nbsp;Shengbo Tan","doi":"10.1007/s10967-025-10032-2","DOIUrl":"10.1007/s10967-025-10032-2","url":null,"abstract":"<div><p>To address the interference from non-radioactive components in the environment and achieve efficient identification of mixed nuclide spectra, we propose a novel isotope identification method, LSNet. Experimental results demonstrate that, with comparable parameter counts and computational complexity, LSNet outperforms models such as the Gate-Recurrent-Unit (GRU) across various evaluation metrics. Additionally, LSNet shows significantly higher accuracy in identifying anomalous nuclide spectra compared to other models. Finally, we demonstrate that LSNet effectively identifies mixed nuclides.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2703 - 2714"},"PeriodicalIF":1.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Validation of spectrophotometric method for 63Ni activity determination in radioactive waste samples 分光光度法测定放射性废物样品中63Ni活度的验证
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-07 DOI: 10.1007/s10967-025-10047-9
Marek Hupian, Oľga Rosskopfová, Dominik Juračka, Michal Galamboš
{"title":"Validation of spectrophotometric method for 63Ni activity determination in radioactive waste samples","authors":"Marek Hupian,&nbsp;Oľga Rosskopfová,&nbsp;Dominik Juračka,&nbsp;Michal Galamboš","doi":"10.1007/s10967-025-10047-9","DOIUrl":"10.1007/s10967-025-10047-9","url":null,"abstract":"<div><p>This study focuses on the radiochemical separation and activity determination of <sup>63</sup>Ni in radioactive waste sample. A validated spectrophotometric method was employed for the chemical yield determination, replacing the traditional gravimetric approach due to its faster processing time and reduced material consumption. The spectrophotometric method was first validated using an NPL reference sample, ensuring accuracy and consistency. Radiochemical separation was conducted using ion-exchange and extraction chromatography, followed by activity measurement using liquid scintillation counting (LSC). The chemical yield was determined using both spectrophotometry and gravimetry for comparison. The average <sup>63</sup>Ni activity in the radioactive waste sample was found to be 27.9 ± 3.8 MBq/kg.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2671 - 2679"},"PeriodicalIF":1.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-025-10047-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on electromigration of Sr2+ in mudstone: diffusion and modelling 泥岩中Sr2+电迁移研究：扩散与模拟
IF 1.5 3区 化学
Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-07 DOI: 10.1007/s10967-025-10043-z
Shengchao Li, Duo Zhou, Mingfang Zhou, Hongyun Liu, Ping Chen
{"title":"Research on electromigration of Sr2+ in mudstone: diffusion and modelling","authors":"Shengchao Li,&nbsp;Duo Zhou,&nbsp;Mingfang Zhou,&nbsp;Hongyun Liu,&nbsp;Ping Chen","doi":"10.1007/s10967-025-10043-z","DOIUrl":"10.1007/s10967-025-10043-z","url":null,"abstract":"<div><p>Mudstones serve as a natural barrier and is a crucial medium for blocking the migration of radionuclides in deep geological repository. In this study, electromigration experiments of Sr<sup>2+</sup> were conducted to obtain the effective diffusion coefficients through mudstone slices in limited time. The results indicate that as the voltage increasedthe effective diffusion coefficients decreased with increasing background electrolyte solution. This may result from influence of ionic strength and formation of colloids. Electromigration technique was confirmed to be reliable to quick acquire the effective diffusion coefficient. Great potential is expected for electromigration technique in investigation in dense medium, such as granite.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2963 - 2969"},"PeriodicalIF":1.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","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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