Cerca
Ara es mostren els items 1-10 de 28
Instant release fraction corrosion studies of commercial UO2 BWR spent nuclear fuel
(Elsevier, 2017-05-01)
Article.
Accés obert
Article.
Accés obert
The instant release fraction of a spent nuclear fuel is a matter of concern in the performance assessment of a deep geological repository since it increases the radiological risk. Corrosion studies of two different spent ...
Uranium speciation in river sediments contaminated by phosphate ores
(2012-03)
Article.
Accés restringit per política de l'editorial
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 ...
UO2 surface oxidation by mixtures of water vapor and hydrogen as a function of temperature
(Elsevier, 2015-12-01)
Article.
Accés obert
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 ...
Influence of the interpellet space to the Instant Release Fraction determination of a commercial UO2 Boiling Water Reactor Spent Nuclear Fuel
(Elsevier, 2018-02)
Article.
Accés obert
Article.
Accés obert
The contact of the coolant with the fuel pin during irradiation produces a gradient of temperature in the fuel pellet that segregates the radionuclides (RN) depending on its volatility and reactivity. This segregation ...
Sorption of antimony (V) onto synthetic goethite in carbonate medium
(2008-06)
Article.
Accés restringit per política de l'editorial
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 . ...
In situ removal of arsenic from groundwater by using permeable reactive barriers of organic matter/limestone/zero-valent iron mixtures
(2010-08)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
Abstract In this study, two mixtures of municipal
compost, limestone and, optionally, zero-valent iron
were assessed in two column experiments on acid mine
treatment. The effluent solution was systematically
analysed ...
Dissolution experiments of commercial PWR (52 MWd/kgU) and BWR (53 MWd/kgU) spent nuclear fuel cladded segments in bicarbonate water under oxidizing conditions. Experimental determination of matrix and instant release fraction
(Elsevier, 2015-10-01)
Article.
Accés obert
Article.
Accés obert
The denominated instant release fraction (IRF) is considered in performance assessment (PA) exercises to govern the dose that could arise from the repository. A conservative definition of IRF comprises the total inventory ...
Changes of heavy metal and PCB contents in surficial sediments of the Barcelona harbour after the opening of a new entrance
(2009-11)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
The Barcelona harbour is one of the biggest
and most important in commercial and passenger traffic in the Mediterranean Sea. In 2003, construction works for the enlargement of the port were carried out
with the opening ...
Removal of cadmium, copper, nickel, cobalt and mercury from water by Apatite IITM: column experiments
(Elsevier, 2011-10-30)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
Sorption of selenium(IV) and selenium(VI) onto natural iron oxides: Goethite and hematite
(Elsevier, 2008-01)
Article.
Accés restringit per política de l'editorial
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 ...