A5067004708- Radioactive element chemistry and processing
- Nuclear Materials and Properties
- Nuclear materials and radiation effects
- Radioactive contamination and transfer
- Nuclear and radioactivity studies
- Glass properties and applications
- Graphite, nuclear technology, radiation studies
- Chemical Synthesis and Characterization
- Nuclear reactor physics and engineering
- Recycling and utilization of industrial and municipal waste in materials production
- Analytical chemistry methods development
- Clay minerals and soil interactions
- Geochemistry and Elemental Analysis
- Radioactivity and Radon Measurements
- Concrete and Cement Materials Research
- Groundwater flow and contamination studies
- CO2 Sequestration and Geologic Interactions
- Extraction and Separation Processes
- Soil and Unsaturated Flow
- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Building materials and conservation
- Lanthanide and Transition Metal Complexes
- Recycling and Waste Management Techniques
- Hydrocarbon exploration and reservoir analysis
IMT Atlantique
2017-2024
Laboratoire de Physique Subatomique et des Technologies Associées
2015-2024
Institut National de Physique Nucléaire et de Physique des Particules
2014-2024
Centre National de la Recherche Scientifique
2015-2024
Nantes Université
2015-2024
Japan Atomic Energy Agency
2017-2024
Advanced Science Research Center
2017-2024
Karlsruhe Institute of Technology
2023
École Nationale Supérieure des Mines de Paris
2008-2021
Institut Mines-Télécom
2018-2019
The sorption of Eu(III) on anatase and rutile was studied as a function ionic strength, humic acid (HA, 7.5 mg/L), electrolyte anions over large range pH (2−12). presence HA significantly affected to rutile. independent strength. Results an X-ray photoelectron spectroscopy (XPS) analysis showed that chemically present within the near-surface TiO2 due formation ≡SOEu ≡SOHAEu complexes. An extended absorption fine structure (EXAFS) technique applied characterize local structural environment...
Research Article| December 01, 2006 Nuclear Waste Glasses - How Durable? Bernd Grambow *Subatech, Ecole des Mines de Nantes, CNRS/IN2P3, Université 4 rue Alfred Kastler, 44307 France E-mail: grambow@subatech.in2p3.fr Search for other works by this author on: GSW Google Scholar Elements (2006) 2 (6): 357–364. https://doi.org/10.2113/gselements.2.6.357 Article history first online: 09 Mar 2017 Cite View This Citation Add to Manager Share Icon Facebook Twitter LinkedIn MailTo Tools Get...
Abstract The nuclear disaster at the Fukushima Daiichi Nuclear Power Plant (FDNPP) in March 2011 caused partial meltdowns of three reactors. During meltdowns, a type condensed particle, caesium-rich micro-particle (CsMP), formed inside reactors via unknown processes. Here we report chemical and physical processes CsMP formation during based on atomic-resolution electron microscopy CsMPs discovered near FDNPP. All (with sizes 2.0–3.4 μm) comprise SiO 2 glass matrices ~10-nm-sized Zn–Fe-oxide...
Keeping future generations safe from today's nuclear waste relies on this being effectively isolated for all time. Clay rocks, or rocks with a high clay content, offer promising isolation properties over time periods that are as long the age of their host geological formations. Constructing repository in such material does not significantly change clay's properties, which is great advantage. Isolation function interplay between slow release radionuclides waste, diffusion-controlled...
Highly radioactive cesium-rich microparticles (CsMPs) released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) provide nano-scale chemical fingerprints of 2011 tragedy. U, Cs, Ba, Rb, K, and Ca isotopic ratios were determined on three CsMPs (3.79-780 Bq) collected within ~10 km FDNPP to determine CsMPs' origin mechanism formation. Apart crystalline Fe-pollucite, CsFeSi2O6 · nH2O, are comprised mainly Zn-Fe-oxide nanoparticles in a SiO2 glass matrix (up ~30 wt% Cs ~1 U associated with...
Trace U was released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) during meltdowns, but speciation of components nuclear fuel remains unknown. We report, for first time, atomic-scale characteristics nanofragments fuels that were FDNPP into environment. Nanofragments an intrinsic U-phase discovered to be closely associated with radioactive cesium-rich microparticles (CsMPs) in paddy soils collected ∼4 km FDNPP. The nanoscale fragments either encapsulated by or attached CsMPs and...
Magnetic N-doped Fe/Fe<sub>3</sub>C@C derived from metal–organic frameworks and highly efficient U(<sc>vi</sc>)-contaminated wastewater remediation.
Highly radioactive cesium-rich microparticles (CsMPs) were released from the Fukushima Daiichi nuclear power plant (FDNPP) to surrounding environment at an early stage of disaster in March 2011; however, quantity CsMPs remains undetermined. Here, we report a novel method quantify number surface soils or around and fraction radioactivity they contribute, which call "quantification CsMPs" (QCP) is based on autoradiography. photostimulated luminescence (PSL) linearly correlated various...
Abstract Data science (digitalisation and artificial intelligence) became more than an important facilitator for many domains in fundamental applied sciences as well industry is disrupting the way of research already to a large extent. Originally, data were viewed be well-suited, especially, data-intensive applications such image processing, pattern recognition, etc. In recent past, particularly, data-driven physics-inspired machine learning methods have been developed extent that they...
To contribute to the comprehension of metal ion sorption properties in mixed mineral-organic matter systems, interaction studies between Eu(III) and polymaleic acid (PMA)-coated alumina colloids were carried out at pH 5 0.1 M NaClO4. The studied parameters concentration (1 x 10(-10) 1 10(-4) M) PMA loading on (gamma = 10-70 mg/g). data described by a surface complexation model. constant capacitance model was used account for electrostatic interactions. results showed thattwo sites necessary...
While research on the safety of geological disposal radioactive waste has been ongoing for more than 50 years, community not achieved a clear understanding repository safety. Repository is often considered concept developed by engineers, putting ever-growing knowledge in overall context case, with scientists providing building blocks it, some which might contribute to This article argues that need increase their and particular redundancy various barriers assuring isolation capacity over an...