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Simulations of H2O2 concentration profiles in the water surrounding spent nuclear fuel
KTH, Skolan för kemivetenskap (CHE), Kemi, Kärnkemi.
KTH, Skolan för kemivetenskap (CHE), Kemi, Kärnkemi.
KTH, Skolan för kemivetenskap (CHE), Kemi, Kärnkemi.ORCID-id: 0000-0003-0663-0751
2008 (engelsk)Inngår i: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 372, nr 1, s. 32-35Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A simple mathematical model describing the hydrogen peroxide concentration profile in water surrounding a spent nuclear fuel pellet as a function of time has been developed. The water volume is divided into smaller elements, and the processes that affect hydrogen peroxide concentration are applied to each volume element. The model includes production of H2O2 from alpha-radiolysis, surface reaction between H2O2 and UO2 and diffusion. Simulations show that the surface concentration of H2O2 increases fairly rapidly and approaches the steady-state concentration. The time to reach steady-state is sufficiently short to be neglected compared to the times of interest when simulating spent fuel dissolution under deep repository conditions. Consequently, the steady-state approach can be used to estimate the rate for radiation-induced spent nuclear fuel dissolution.

sted, utgiver, år, opplag, sider
2008. Vol. 372, nr 1, s. 32-35
Emneord [en]
Computer simulation; Concentration (process); Function evaluation; Nuclear fuels; Nuclear fuel dissolution; Steady-state concentration; Hydrogen peroxide
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-17329DOI: 10.1016/j.jnucmat.2007.01.279ISI: 000253259700003Scopus ID: 2-s2.0-36549056634OAI: oai:DiVA.org:kth-17329DiVA, id: diva2:335373
Merknad
QC 20100811Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert
Inngår i avhandling
1. The Steady-state Approach: A Model Describing the Dynamics of Spent Nuclear Fuel Dissolution in Groundwater
Åpne denne publikasjonen i ny fane eller vindu >>The Steady-state Approach: A Model Describing the Dynamics of Spent Nuclear Fuel Dissolution in Groundwater
2007 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2007. s. v, 42
Serie
TRITA-CHE-Report, ISSN 1654-1081 ; 2007:20
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-4336 (URN)978-91-7178-631-9 (ISBN)
Disputas
2007-04-27, K1, KTH, Teknikringen 56, Stockholm, 10:00 (engelsk)
Opponent
Veileder
Merknad

Qc 20170222

Tilgjengelig fra: 2007-04-17 Laget: 2007-04-17 Sist oppdatert: 2017-02-22bibliografisk kontrollert

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