Exploració per autor "Pablo Ribas, Joan de"

UO2 as new filling material for cesium retention in high-level nuclear waste repositories

Martínez Torrents, Albert; Gimenez, Javier; Pablo Ribas, Joan de; Casas Pons, Ignasi (2015-10-01)
Article
Accés obert

Depleted uranium dioxide has been proposed as an inert material to fill spent nuclear fuel canisters in geological repositories. Sorption capacity of this material to retain radionuclides released from the fuel was determined. ...

UO2 surface oxidation by mixtures of water vapor and hydrogen as a function of temperature

Espriu Gascon, Alexandra; Llorca Piqué, Jordi; Domínguez Escalante, Montserrat; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Pablo Ribas, Joan de (Elsevier, 2015-12-01)
Article
Accés obert

In the present work, X-Ray Photoelectron Spectroscopy (XPS) was used to study the effect of water vapor on the UO2 surface as a function of temperature. The experiments were performed in situ inside a high pressure chamber ...

Uranium speciation in river sediments contaminated by phosphate ores

Meca, S.; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Martí Gregorio, Vicenç; Pablo Ribas, Joan de (2012-03)
Article
Accés restringit per política de l'editorial

Large amounts of phosphate ores with high concentrations of uranium were dumped by a phosphate plant into the Flix water reservoir in the Ebre River, Catalonia, NE Spain. These phosphate wastes have been mixed over the ...

Uranium speciation studies at alkaline pH and in the presence of hydrogen peroxide using time-resolved laser-induced fluorescence spectroscopy

Martínez Torrents, Albert; Meca, Sandra; Baumann, Nils; Martí Gregorio, Vicenç; Giménez Izquierdo, Francisco Javier; Pablo Ribas, Joan de; Casas Pons, Ignasi (2013-05)
Article
Accés restringit per política de l'editorial

Time-resolved laser-induced fluorescence spectroscopy (TRLFS) was used to study the speciation of uranium(VI) at very alkaline pH (11–13), at room temperature and in the absence of CO2. In this case, at pH = 11, two different ...

Water-air volatilization factors to determine volatile organic compound (VOC) reference levels in water

Martí Gregorio, Vicenç; Pablo Ribas, Joan de; JUBANY, IRENE; Rovira, Miquel; Orejudo, Emili (2014-06-11)
Article
Accés obert

The goal of this work is the modeling and calculation of volatilization factors (VFs) from water to air for volatile organic compounds (VOCs) in order to perform human health risk - base d reference levels (RLs) ...

X-ray photoelectron spectroscopy (XPS) study of surface oxidation of UO2 doped with Gd2O3 at different temperatures and atmospheres

García Gómez, Sonia; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Llorca Piqué, Jordi; Pablo Ribas, Joan de (2023-08)
Article
Accés obert

In this work, the influence of GdIII doping on the surface oxidation of UO2 has been investigated in situ by XPS. The samples were put in contact with either hydrogen, argon or synthetic air streams saturated with water ...