98%
921
2 minutes
20
Within a spent nuclear fuel recycling strategy, in the past few years, the pyridine-bis-triazole unit was found to be rather effective and selective in minor actinide (MA) separation from synthetic high active raffinate (HAR). In this research work, the main features of the recently studied ligand were investigated in order to evaluate its potentialities in SANEX-like processes. Its applicability in advanced separation processes was demonstrated, even at process temperatures. It manifested satisfactory extraction properties for a successful selective An separation from Ln, easy cation release, and adequate extraction kinetics as well as outstanding hydrolytical and radiolytical stability. All the results collected in this work allowed the scientists on the committee of the H2020 GENIORS project to promote as a concrete alternative to the reference CyMe-BTBP ligand.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8972958 | PMC |
http://dx.doi.org/10.1021/acs.iecr.2c00104 | DOI Listing |
Anal Chim Acta
November 2025
State Key Laboratory of Loess Science, Shaanxi Key Laboratory of AMS Technology and Application, Xi'an AMS Center, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China. Electronic address:
Pu and Sr are highly important radionuclides in the environment, which can accumulate in the human body through the food chain and cause radiation exposure. With the continuous discharge of treated nuclear contamination water from the Fukushima Daiichi nuclear power plant, it is crucial to investigate and monitor the levels of Pu and Sr in seafood. However, it is still a challenge to determine Pu and Sr in seafood at environmental levels, owing to their extremely low concentrations, labor-intensive and time-consuming pre-treatment for large-sized samples.
View Article and Find Full Text PDFJ Radiol Prot
September 2025
Physics, Toho University - Narashino Campus, Funabashi, JAPAN.
In the event of an accident at a nuclear fuel handling facility, the wounds of the affected workers may be contaminated with actinides such as uranium, neptunium, plutonium, and americium. The accidental absorption of actinides from wounds can lead to a significant degree of internal radiation exposure, which can be hazardous to the human body. Although the current approach for identifying actinide contamination is based on the detection of α-particles, the applicability of this approach is reduced for wound contamination due to the α-particles being easily shielded by various components of bodily fluid.
View Article and Find Full Text PDFCommun Chem
August 2025
Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing, China.
Efficient americium (Am)/lanthanide (Ln) separation is highly pursued in advanced nuclear fuel cycle for minimizing the long-term radiotoxicity of nuclear waste and maximizing the utilization of nuclear resources. However, such a task is extremely challenging given the chemical similarity between the inherent thermodynamically stable Am(III) and Ln(III) ions. In recent years, interest in Am/Ln separation through oxidizing Am(III) to higher-valent states is reigniting due to theoretically considerable separation efficiency of this approach.
View Article and Find Full Text PDFAdv Sci (Weinh)
August 2025
Institute of Nuclear and New Energy Technology, Tsinghua University, Haidian District, Beijing, 100084, China.
Water-soluble actinide-masking ligands are fundamentally important for achieving efficient lanthanide/actinide separation and for the development of water-soluble f-block complexes for bioimaging and radiopharmaceutical applications. However, the underlying design principles remain largely elusive, particularly in achieving a fine balance between ligand water solubility and metal affinity/selectivity. In this study, it is demonstrated that for the well-established phenanthroline diimine ligand framework, topological modifications can preserve water solubility but introduce significant rotational energy barriers.
View Article and Find Full Text PDFNat Commun
August 2025
Colorado School of Mines, Golden, CO, USA.
The trivalent actinides are produced in the nuclear fuel cycle during power production and provide the largest long-term radiation dose in used nuclear fuel. It is ideal for these elements to be removed from used nuclear fuel for disposal and a necessity for fuel recycling. A key challenge to this is the similarity of chemical behavior of the trivalent actinides to the lanthanides that are also present as fission products in used fuel.
View Article and Find Full Text PDF