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Ara es mostren els items 17-36 de 39

    • Human Health Risk Assessment of a landfill based on volatile organic compounds emission, immission and soil gas concentration measurements 

      Martí Gregorio, Vicenç; Jubany, Irene; Perez, Consol; Rubio, Xavier; De Pablo, Joan; Giménez Izquierdo, Francisco Javier (2014-10-01)
      Article
      Accés restringit per política de l'editorial
      A Human Health Risk Assessment (HHRA) was required for a closed landfill located in Cerdanyola del Valles (Barcelona, Spain). The FIHRA had two objectives, to evaluate the present risk of the identified receptors in the ...

    • Identifying the Ethiopian origin of the obsidian found in Upper Egypt (Naqada period) and the most likely exchange routes 

      Giménez Izquierdo, Francisco Javier (2015)
      Article
      Accés restringit per política de l'editorial
      The absence of obsidian sources in Egypt implies that obsidian excavated in f ourth millennium BC Upper Egyptian sites arrived to Egypt from long distances. This work develops an obsidian provenance study , based on the ...

    • Immobilization of selenite onto natural siderite (FeCO3) 

      Martínez Martínez, María del Rosario; Giménez Izquierdo, Francisco Javier; Pablo Ribas, Joan de (2015)
      Comunicació de congrés
      Accés obert
      The sorption processes of metals and semimetals on siderite are being studied because of the potential adequacy of the mineral for removing contaminants from natural waters and because of its formation during the reduction ...

    • Incorporation of selenium(IV) and selenium(VI) on uranyl peroxide 

      Martínez Torrents, Albert; Giménez Izquierdo, Francisco Javier; Martínez Lledó, Xavier; Casas Pons, Ignasi; De pablo, J. (2015-01-01)
      Article
      Accés restringit per política de l'editorial
      © 2014, Akadémiai Kiadó, Budapest, Hungary. The sorption of Se(IV) and Se(VI) on uranium peroxide has been studied considering the sorption kinetics, the sorption isotherms and the effect of pH. Selenium sorption on studtite ...

    • Integration of foreigners in Egypt: the relief of Amenhotep II shooting arrows at a copper ingot and related scenes 

      Giménez Izquierdo, Francisco Javier (2017)
      Article
      Accés obert
      The relief of Amenhotep II shooting arrows at a copper ingot target has often been considered as propaganda of the king’s extraordinary strength and vigour. However, this work proposes that the scene took on additional ...

    • Modelling the release of Mo, Tc, Ru and Rh from high burnup spent nuclear fuel at alkaline and hyperalkaline pH 

      Giménez Izquierdo, Francisco Javier; Pablo Ribas, Joan de; García Gómez, Sonia; Serrano Purroy, Daniel; Iglesias Pérez, Luis; Clarens Blanco, Frederic; Martínez Torrents, Albert (Cambridge University Press, 2023-12-30)
      Article
      Accés obert
      The present work shows experimental data on the release of some radionuclides that are forming the so-called e particles in the spent nuclear fuel (SNF): Mo, Tc, Ru and Rh. The leaching experiments were carried out with a ...

    • Molybdenum release from high burnup spent nuclear fuel at alkaline and hyperalkaline pH 

      García Gómez, Sonia; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Llorca Piqué, Jordi; Pablo Ribas, Joan de; Martínez Torrents, Albert; Clarens Blanco, Frederic; Kokinda, Jakub; Iglesias Pérez, Luis; Serrano Purroy, Daniel (Elsevier, 2023-01-01)
      Article
      Accés obert
      This work presents experimental data and modelling of the release of Mo from high-burnup spent nuclear fuel (63 MWd/kgU) at two different pH values, 8.4 and 13.2 in air. The release of Mo from SF to the solution is around ...

    • Oxidation by H2O(g) in the presence of H2(g) of UO2 doped with Pd nanoparticles 

      Espriu Gascon, Alexandra; Llorca Piqué, Jordi; Domínguez Escalante, Montserrat; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Pablo Ribas, Joan de (2018-09-28)
      Article
      Accés obert
      This work studies the influence of epsilon particles and metallic precipitates, simulated through the deposition of Pd nanoparticles on non-irradiated UO2, on the oxidation of the spent nuclear fuel (SNF). The presence of ...

    • Oxidative dissolution mechanism of both undoped and Gd2O3-doped UO2(s) at alkaline to hyperalkaline pH† 

      García Gómez, Sonia; Casas Pons, Ignasi; Llorca Piqué, Jordi; de Pablo, Joan; Giménez Izquierdo, Francisco Javier (Royal Society of Chemistry (RSC), 2023)
      Article
      Accés obert
      The dissolution rates of unirradiated UO2 and unirradiated UO2 doped with Gd2O3 were determined as a function of pH using flow-through experiments in the presence of O2(g) and bicarbonate. The dissolution rate of non-doped ...

    • Preparation and characterisation of Pd nanoparticles doped UO2 samples 

      Espriu Gascon, Alexandra; Bastos Arrieta, Julio Alonso; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Pablo Ribas, Joan de (2016-01-01)
      Article
      Accés obert
      To assess the safety of the deep geological disposal that would store the spent nuclear fuel (SNF), studies are centred on the SNF behaviour under repository conditions. UO2, which is the most common compound of SNF matrix, ...

    • Retention of cesium and strontium by uranophane, Ca(UO2)2(SiO3OH)2·5H2O 

      Espriu Gascon, Alexandra; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Pablo Ribas, Joan de (2018-07-05)
      Article
      Accés obert
      This work determines the capacity of uranophane, one of the long-term uranyl secondary solid phases formed on the spent nuclear fuel (SNF), to retain radionuclides (cesium and strontium) released during the dissolution of ...

    • Secondary phase formation on UO2 in phosphate media 

      Rey, A.; Giménez Izquierdo, Francisco Javier; Casas Pons, Ignasi; Clarens, F.; De Pablo Ribes, Joan (2008-04-08)
      Article
      Accés restringit per política de l'editorial
      he dissolution of UO2 (a chemical analog of uraninite and of spent nuclear fuel) has been studied by using a flow-through reactor. The UO2 dissolution rates at total View the MathML source concentrations of 10−4, 10−5, and ...

    • Solubility study and point of zero charge of studtite (UO2O2 center dot 4H(2)O) 

      Giménez Izquierdo, Francisco Javier; De Pablo, Joan; Casas Pons, Ignasi; Martínez Lladó, Xavier; Rovira Boixaderas, Miquel; Martinez Torrents, A (2014-10-01)
      Article
      Accés restringit per política de l'editorial
      The knowledge of the characteristics of the U(VI)-peroxide chemical system is of importance because of the relevance of the uranyl peroxide solid phases studtite (UO2O2 center dot 4H(2)O) or metastudtite (UO2O2 center dot ...

    • Sorption and mobility of Sb(V) in calcareous soils of Catalonia (NE Spain): Batch and column experiments 

      Martínez Lladó, Xavier; Valderrama Ángel, César Alberto; Rovira Boixaderas, Miquel; Martí Gregorio, Vicenç; Giménez Izquierdo, Francisco Javier; Pablo Ribas, Joan de (2011-01-15)
      Article
      Accés restringit per política de l'editorial
      The sorption of Sb(V) onto natural calcareous soils was studied in batch and column experiments as a function of physicochemical properties of the soil, namely: organic matter, the active fraction of Fe and Al and the pH ...

    • Sorption of antimony (V) onto synthetic goethite in carbonate medium 

      Martinez-Llado, X; Martínez Lladó, Xavier; Pablo Ribas, Joan de; Giménez Izquierdo, Francisco Javier; Ayora Ibáñez, Carlos; Martí Gregorio, Vicenç; Rovira Boixaderas, Miquel (2008-06)
      Article
      Accés restringit per política de l'editorial
      The sorption kinetics of antimony(V) on synthetic goethite is very fast compared to the sorption of other metals on goethite (e.g. arsenic and selenium) and depends on temperature, with an activation energy of 49+9 kJ . ...

    • Sorption of phosphate and zinc onto hematite and magnetite as mechanism of attenuation of contamination in agricultural soils 

      Martínez Martínez, María del Rosario; Martí, Vicens; Giménez Izquierdo, Francisco Javier (2014)
      Comunicació de congrés
      Accés obert
      Excess of natural and synthetic fertilizers applied to agricultural soils is a well-known source of contamination of nitrates and potential source of contamination of metals (copper and zinc) and phosphates (Alloway ...

    • Sorption of selenium(IV) and selenium(VI) onto natural iron oxides: Goethite and hematite 

      Rovira Boixaderas, Miquel; Giménez Izquierdo, Francisco Javier; Martínez Martínez, María del Rosario; Martí Gregorio, Vicenç; Pablo Ribas, Joan de; Martinez-Llado, X; Duro, L (Elsevier, 2008-01)
      Article
      Accés restringit per política de l'editorial
      Selenium is a toxic element with a relatively high mobility in the natural waters. Iron oxy-hydroxides might play an important role in the migration of this element as well as on its removal from contaminated water. In ...

    • Sorption of strontium on uranyl peroxide: implications for a high-level nuclear waste repository 

      Sureda Pastor, Rosa María; Martínez Lladó, Xavier; Rovira Boixaderas, Miquel; Pablo Ribas, Joan de; Casas Pons, Ignasi; Giménez Izquierdo, Francisco Javier (Elsevier, 2010-09-15)
      Article
      Accés restringit per política de l'editorial
      Strontium-90 is considered the most important radioactive isotope in the environment and one of the most frequently occurring radionuclides in groundwaters at nuclear facilities. The uranyl peroxide studtite (UO2O2 center ...

    • Thorium sorption onto magnetite and ferrihydrate in acidic conditions 

      Rojo, I.; Seco, F.; Rovira, M.; Giménez Izquierdo, Francisco Javier; Cervantes, G.; Martí Gregorio, Vicenç; De Pablo Ribes, Joan (2009-01-01)
      Article
      Accés restringit per política de l'editorial
      Sorption of Th(IV) onto two-line ferrihydrite and magnetite in NaClO4 solutions has been studied as a function of pH and ionic strength revealing that sorption onto both solids increases with pH while it is independent on ...

    • 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 ...