Soil contamination caused by γ-radiation emitter radionuclides is a serious problem worldwide. Cementbased Stabilisation/solidification (S/S) could represent an optimal choice to treat radionuclides polluted soils due to the possibility to shield the γ-radiation emitted by contaminant. In order to better planning the treatment procedures, a novel analytical approach has been developed and applied in order to assess the γ-radiation shielding (γRS) of cylindrical S/S treated bodies taking into account the shielding properties of materials used in S/S treatment, all the parameters related to nuclear processes involved and the interaction between radiation and matter. Calculations were compared with γRS values obtained by bench-scale experimental activities. For experiments a soil spiked by thorium oxide (ThO2) was stabilised/solidified using different binder mixture of Portland cement and barite aggregates at different soil:binder ratios and tested for its γ-radiation shielding properties. Results obtained showed that the presence of the barite aggregates mixed with cement gives a significant containment of the γ-radiation possibly representing an optimal choice to S/S treat low level radionuclides polluted soil. Furthermore, a good correspondence between analytical and experimental data was observed making the proposed analytical approach a potential suitable tool to great simplify the estimation of γ-radiation shielding properties of several binders-materials-radionuclides S/S systems.

Stabilisation/solidification of Radionuclides Polluted Soils: a Novel Analytical Approach for the Assessment of the γ-radiation Shielding Capacity / Falciglia, Pietro P.; Cannata, Salvatore; Pace, Francesca; Romano, Stefano; Vagliasindi, Federico G. A.. - In: CHEMICAL ENGINEERING TRANSACTIONS. - ISSN 2283-9216. - ELETTRONICO. - 32:(2013), pp. 223-228. [10.3303/CET1332038]

Stabilisation/solidification of Radionuclides Polluted Soils: a Novel Analytical Approach for the Assessment of the γ-radiation Shielding Capacity

Francesca Pace;
2013

Abstract

Soil contamination caused by γ-radiation emitter radionuclides is a serious problem worldwide. Cementbased Stabilisation/solidification (S/S) could represent an optimal choice to treat radionuclides polluted soils due to the possibility to shield the γ-radiation emitted by contaminant. In order to better planning the treatment procedures, a novel analytical approach has been developed and applied in order to assess the γ-radiation shielding (γRS) of cylindrical S/S treated bodies taking into account the shielding properties of materials used in S/S treatment, all the parameters related to nuclear processes involved and the interaction between radiation and matter. Calculations were compared with γRS values obtained by bench-scale experimental activities. For experiments a soil spiked by thorium oxide (ThO2) was stabilised/solidified using different binder mixture of Portland cement and barite aggregates at different soil:binder ratios and tested for its γ-radiation shielding properties. Results obtained showed that the presence of the barite aggregates mixed with cement gives a significant containment of the γ-radiation possibly representing an optimal choice to S/S treat low level radionuclides polluted soil. Furthermore, a good correspondence between analytical and experimental data was observed making the proposed analytical approach a potential suitable tool to great simplify the estimation of γ-radiation shielding properties of several binders-materials-radionuclides S/S systems.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2690049
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo