Jun-Yeol An, Ki-Tae Yang, June-Hyun Kim, Sun-Il Kim, Jong-Soon Song
{"title":"A study on the leaching characteristics of Cs-contaminated soil generated after soil washing using polymer solidification","authors":"Jun-Yeol An, Ki-Tae Yang, June-Hyun Kim, Sun-Il Kim, Jong-Soon Song","doi":"10.1007/s10967-026-11097-3","DOIUrl":"10.1007/s10967-026-11097-3","url":null,"abstract":"<div><p>Large areas of radioactively contaminated soil can result from releases during nuclear power plant accidents or decommissioning, requiring rapid decontamination. This study evaluated a management option for secondary waste generated after soil washing using a flocculant (J-AF). Fine soil was used to prepare simulated Cs-contaminated soil, followed by roll-compaction pelletization and polymer solidification. Long-term leaching behavior was evaluated for disposal suitability. The leachability indices for Co, Cs, and Sr were 17.76, 17.38, and 14.04, respectively, satisfying the Korean waste acceptance criteria. The results demonstrate the disposal applicability of pelletized polymer waste forms for fine contaminated soil.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6019 - 6029"},"PeriodicalIF":1.7,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023067","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}
{"title":"The kinetic analysis for the conversion of uranium trioxide-derived uranium peroxide hydrates to triuranium octoxide compound","authors":"Nguyen Trong Hung, Wantae Kim, Jin-Young Lee","doi":"10.1007/s10967-026-11098-2","DOIUrl":"10.1007/s10967-026-11098-2","url":null,"abstract":"<div><p>The conversion of uranium trioxide UO<sub>3</sub>-derived uranium peroxide hydrate UO<sub>4</sub>·2H<sub>2</sub>O (UO<sub>3</sub> ex-UPH) to triuranium octoxide U<sub>3</sub>O<sub>8</sub> compound was investigated to establish an optimal kinetic model of the process. Key parameters, including activation energy and the pre-exponential factor <i>A</i> in the Arrhenius equation, were determined using two isoconversional models, namely Flynn–Wall–Ozawa (FWO) and Kissinger–Akahira–Sunose (KAS), based on thermogravimetric analysis TGA data at heating rates of 10, 15, 20, and 30 °C⋅min<sup>−1</sup>. The conversion function <i>f(α)</i>, combined with the average activation energy and <i>A</i>, defined the optimal kinetic models. These findings provide a scientific basis for understanding and controlling the UO<sub>3</sub> ex-UPH conversion to U<sub>3</sub>O<sub>8</sub> compound.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5985 - 6006"},"PeriodicalIF":1.7,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023176","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}
{"title":"Optimizing first-stage unit for Kr enrichment and separation from gaseous effluents with cryogenic activated carbon trap","authors":"Hai Li, Mingfa Xu, Hualong Zhou, Xu Ceng, Huiyun Xiang, Kaihong Fang, Shuaixing He, Geng Yang, Yunyang Gui","doi":"10.1007/s10967-026-11096-4","DOIUrl":"10.1007/s10967-026-11096-4","url":null,"abstract":"<div><p>Trace Kr in nuclear power plant effluents poses a monitoring challenge. Based on a cascade strategy of multi-stage activated carbon trap enrichment/separation with chromatographic detection, this study employed coconut shell-based activated carbon. Optimization of adsorption, separation, desorption temperatures, and sampling method for the first-stage unit achieved efficient Kr separation. Adsorption at − 196 °C ensured complete, stable capture. Separation at − 100 °C enabled N<sub>2</sub>/O<sub>2</sub> desorption with 100% Kr retention. Desorption kinetics at 0 °C achieved 95% efficiency after 7 cycles, with separation from Xe. Negative-pressure sampling reduced sampling time without recovery loss. This scheme provides a parameter basis for trace Kr analysis.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5975 - 5984"},"PeriodicalIF":1.7,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023178","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}
Miodrag Krmar, Yeldos A. Bolatkazyyev, Dimitrije Maletić, Dmitry A. Murashko, Yurii G. Teterev, Semen V. Mitrofanov, Valery N. Shvetsov, Andrey Yu. Dmitriev, Nikola Jovančević
{"title":"Production of Sc isotopes for medical use in a 90 MeV bremsstrahlung beam","authors":"Miodrag Krmar, Yeldos A. Bolatkazyyev, Dimitrije Maletić, Dmitry A. Murashko, Yurii G. Teterev, Semen V. Mitrofanov, Valery N. Shvetsov, Andrey Yu. Dmitriev, Nikola Jovančević","doi":"10.1007/s10967-026-11076-8","DOIUrl":"10.1007/s10967-026-11076-8","url":null,"abstract":"<div><p>A natural Ti target was exposed to a bremsstrahlung flux of maximum energy 92 MeV at the IREN facility at JINR. Gamma spectrometric measurements of the activated target focused on determining the yield and saturation activity of the medically important isotopes <sup>43</sup>Sc, <sup>44</sup>Sc and <sup>47</sup>Sc. Based on the obtained results, an analysis was performed of the conditions that would have to be met in order to obtain commercial quantities of these isotopes for routine clinical use by photonuclear reactions. The possibility of obtaining a <sup>44</sup>Ti/<sup>44</sup>Sc generator, which, due to its long half-life <sup>44</sup>Ti, could be a source of <sup>44</sup>Sc for decades, is particularly challenging. In this work, an assessment of the possibility of obtaining such a generator in the case of using an electron accelerator operating with electron currents of the order of mA, was performed.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"6007 - 6017"},"PeriodicalIF":1.7,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023119","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}
{"title":"Species-dependent iodine extraction behavior during combustion of seaweeds: a preliminary evaluation using intrinsic 131I","authors":"Jong-In Byun, Seong A. Yim, Sang Kuk Lee","doi":"10.1007/s10967-026-11089-3","DOIUrl":"10.1007/s10967-026-11089-3","url":null,"abstract":"<div><p>This study investigates species-dependent iodine extraction during seaweed combustion using intrinsically present <sup>131</sup>I as a native tracer. Under the species-specific combustion conditions employed in this study, clear differences in iodine volatilization were observed among the seaweed species. While iodine was recovered almost completely from some species, it remained predominantly in the combustion residue of others. The results suggest that iodine extraction behavior is influenced by seaweed matrix composition and that quantitative volatilization cannot always be assumed for all iodine-rich biological matrices. These findings highlight a potential limitation of combustion-based iodine extraction for certain seaweed species. Furthermore, this study demonstrates the value of intrinsically present iodine for directly evaluating the extraction efficiency of naturally occurring iodine without relying solely on externally added tracers.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5969 - 5974"},"PeriodicalIF":1.7,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023118","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}
{"title":"Selective adsorption of Gd/Tb/Dy from nitric acid system using Cyanex272-P204 impregnated resin: evaluation of separation potential for nuclear medicine applications","authors":"Fuqiu Ma, Yanjun Guo, Xue Geng, Meng Li, Yongde Yan, Jiajing Zhang, Ziyang Chang, Guixiang Wang","doi":"10.1007/s10967-026-11085-7","DOIUrl":"10.1007/s10967-026-11085-7","url":null,"abstract":"<div><p>This study presents a novel approach for the separation and purification of the medical isotope <sup>161</sup>Tb by preparing a dual-extractant impregnated resin and evaluating its adsorption and separation performance for Gd/ Tb/ Dy. Adsorption experiments results indicated that under 0.05 mol L<sup>−1</sup> nitric acid, with an adsorption time of 60 min and a solid-to-liquid ratio of 12 mg mL<sup>−1</sup>, the Cyanex272-P204 resin achieved an adsorption capacity of 1389.54 μg g<sup>−1</sup> for Tb(III). Kinetic analysis of the adsorption data indicated that the pseudo-second-order model provided a more accurate description of the process, whereas the isotherm data demonstrated strong alignment with the Langmuir model. Finally, theoretical calculations confirmed that the Cyanex272-P204 dual-extractant system, in its dimeric form, coordinates with Tb(III) to form three eight-membered chelate rings, exhibiting an adsorption binding energy of 20.4178 kcal mol<sup>−1</sup>. Consequently, this study offers both theoretical insight and experimental validation for the efficient separation of Gd/ Tb/ Dy using Cyanex272-P204 resin.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5951 - 5968"},"PeriodicalIF":1.7,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023117","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}
Kailasharaja Rajendran, Prabal Kumar, Reshma Maria Cocess D’Souza, Shivanand Bhushan
{"title":"Iodine-131 removal from radioactive sludge water by biological methods: a systematic review","authors":"Kailasharaja Rajendran, Prabal Kumar, Reshma Maria Cocess D’Souza, Shivanand Bhushan","doi":"10.1007/s10967-026-11062-0","DOIUrl":"10.1007/s10967-026-11062-0","url":null,"abstract":"<div><p>Iodine-131 (<sup>131</sup>I) is extensively used in nuclear medicine for both diagnostic and therapeutic applications; however, its disposal from medical and industrial sources generates environmentally hazardous radioactive wastewater, poses environmental concerns. This review synthesizes current evidence on biological strategies for the remediation of <sup>131</sup>I and related radionuclides. By integrating findings across microbial, algal, fungal, and engineered biological systems, it provides a comparative assessment of removal mechanisms, efficiency, and environmental applicability. Radiation-resistant bacteria and microalgae demonstrated the greatest remediation potential, with some engineered systems achieving near-complete radionuclide removal. Biological approaches offer sustainable alternatives to conventional treatments and warrant further validation for large-scale radioactive management</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5793 - 5803"},"PeriodicalIF":1.7,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-026-11062-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023181","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}
{"title":"Immobilized low-leaching MnO2 catalysts for PMS activation to remove iodinated X-ray contrast media from real hospital wastewaters: mechanisms, by-products, toxicity, and scale-up","authors":"Mohammed F Hamdi","doi":"10.1007/s10967-026-11090-w","DOIUrl":"10.1007/s10967-026-11090-w","url":null,"abstract":"<div><p>This review critically evaluates immobilized low-leaching MnO<sub>2</sub> catalysts for peroxymonosulfate (PMS) activation to remove iodinated X-ray contrast media (ICMs) from real hospital wastewater. It addresses the central contradiction that high parent-ICM removal in ultrapure water does not necessarily translate into lower environmental risk. In realistic matrices, dissolved organic matter, inorganic ions, co-contaminants, and suspended solids can increase PMS demand, redirect radical and non-radical pathways, foul catalysts, promote manganese release, and alter iodine speciation and transformation-product profiles. Accordingly, credible scale-up requires quantitative Mn-leaching criteria, iodine mass balance, identification of toxic by-products, post-disinfection I-DBP testing, and long-duration continuous-flow validation under realistic hydraulic and water-quality conditions.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5805 - 5831"},"PeriodicalIF":1.7,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023211","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}
Ghasem Alahyarizadeh, Hadi Sarafraz, Fatemeh Maleki
{"title":"Multivariate optimization of uranium removal via radiation-grafted acrylonitrile/acrylamide polymers on hollow fibers with phosphonic functional group modifications","authors":"Ghasem Alahyarizadeh, Hadi Sarafraz, Fatemeh Maleki","doi":"10.1007/s10967-026-11079-5","DOIUrl":"10.1007/s10967-026-11079-5","url":null,"abstract":"<div><p>A novel polymeric adsorbent was prepared by gamma radiation-induced grafting of acrylonitrile and acrylamide onto polypropylene hollow fibers, followed by amidoximation and phosphonic acid functionalization. The adsorbent was characterized by FTIR, SEM, and TGA. Response surface methodology (CCD) optimized uranium adsorption: pH 4.9, 22.6 mg L<sup>−1</sup> U, 127 min, achieving 99% removal and adsorption capacity > 180 mg g<sup>−1</sup>. Kinetics followed pseudo-second-order (R<sup>2</sup> = 0.999), and isotherms fitted Langmuir model. The phosphonic group enhanced selectivity and reusability (stable over 4 cycles). The adsorbent shows promise for uranium recovery from aqueous solutions.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5929 - 5949"},"PeriodicalIF":1.7,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023073","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}
Eric Mauerhofer, Gerrit Kellerhof, Iaroslav Meleshenkovskii, Christoph Langer
{"title":"Partial gamma-ray production cross-sections for (n, n´γ)-reactions induced by fission neutrons","authors":"Eric Mauerhofer, Gerrit Kellerhof, Iaroslav Meleshenkovskii, Christoph Langer","doi":"10.1007/s10967-026-11083-9","DOIUrl":"10.1007/s10967-026-11083-9","url":null,"abstract":"<div><p>In order to perform chemical analysis with the FaNGaS instrument operated at the MLZ facility, the partial gamma-ray production cross-sections for (n, n´γ) reactions with fission neutrons were evaluated from the relative intensities of the gamma lines listed in the “Atlas of Gamma-rays from Inelastic Scattering of Reactor Fast Neutrons” published in 1978 by Demidov et al. The 846-keV gamma-ray of the <sup>56</sup>Fe(n, n´γ)<sup>56</sup>Fe reaction was used as reference with the fission-spectrum averaged production cross section of 586 ± 41 mb measured with FaNGaS. Additionally, the detection limits were estimated for a measurement time of 12 h.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"335 9","pages":"5893 - 5904"},"PeriodicalIF":1.7,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-026-11083-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023177","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}