Skip to main content
Ir a la página de inicio de la Comisión Europea (se abrirá en una nueva ventana)
español español
CORDIS - Resultados de investigaciones de la UE
CORDIS
Contenido archivado el 2024-04-16

Treatment of radioactive solvent waste by catalytic oxidation

Objetivo

As a result of past reprocessing campaigns performed in the EUREX pilot plant, about 26 m{3} of spent solvent were produced. Taking into account the difficulty to process this waste type (a mixture of tri-butyl-phosphate, tri-capryl-amine, kerosene and methyl-benzenes) according to existing technologies, this research activity aims at setting-up a suitable treatment process capable of reaching three major objectives:

- reduction of the waste volume by a factor at least equal to 10;
- oxidative destruction of the reduced volume waste;
- compatibility of the processed waste with conventional immobilisation matrices like cement.

For the specific purpose, it is intended to investigate the potentialities of the combination of distillation with wet oxidation.
The feasibility of distillation as a method drastically to reduce the volume of radioactive solvent waste (a mixture of tri-butyl-phosphate, tri-capryl-amine, kerosene and methyl benzenes) has been demonstrated. More than 88% of the solvent waste can be distilled with a negligible rising of the activity, so that the top product of the of the distillation can be conventionally incinerated according with the environmental radioactivity receptivity.

The bottom residue needed for wet oxidation hot laboratory experiments has been produced. A section of the cold technological hall of the EUREX plant has been modified for the cold bench scale wet oxidation experiments.
Work programme:

The work programme includes the following tasks:

- Conduction of laboratory scale distillation tests with genuine waste from the EUREX plant in order to optimize the operating parameters to get a DF of the top fraction which satisfy incineration criteria in conventional plants
- Wet oxidation experiments at laboratory scale and at bench scale. These experiments will involve processing of 3-5 litres batches of inactive simulated waste in order to quantify the scaling-up effect and to optimise the process parameters which enable a minimisation of the final aqueous waste volume.
- Conduction of cementation tests using ordinary Portland cement (possibly with inorganic additives) on the inactive aqueous waste coming from the wet oxidation bench-scale experiments.
- Preliminary design of a full scale treatment plant for reprocessing the whole stock of the EUREX solvent waste, including the distillation section, the wet oxidation section and the interface with the cementation plant.

Programa(s)

Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.

Tema(s)

Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.

Convocatoria de propuestas

Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.

Datos no disponibles

Régimen de financiación

Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.

CSC - Cost-sharing contracts

Coordinador

Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (ENEA)
Aportación de la UE
Sin datos
Dirección

13040 Saluggia (Vercelli)
Italia

Ver en el mapa

Coste total

Los costes totales en que ha incurrido esta organización para participar en el proyecto, incluidos los costes directos e indirectos. Este importe es un subconjunto del presupuesto total del proyecto.

Sin datos
Mi folleto 0 0