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Simulations of H2O2 concentration profiles in the water surrounding spent nuclear fuel
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Nuclear Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Nuclear Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Nuclear Chemistry.ORCID iD: 0000-0003-0663-0751
2008 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 372, no 1, 32-35 p.Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
2008. Vol. 372, no 1, 32-35 p.
Keyword [en]
Computer simulation; Concentration (process); Function evaluation; Nuclear fuels; Nuclear fuel dissolution; Steady-state concentration; Hydrogen peroxide
National Category
Inorganic Chemistry
Identifiers
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: diva2:335373
Note
QC 20100811Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved
In thesis
1. The Steady-state Approach: A Model Describing the Dynamics of Spent Nuclear Fuel Dissolution in Groundwater
Open this publication in new window or tab >>The Steady-state Approach: A Model Describing the Dynamics of Spent Nuclear Fuel Dissolution in Groundwater
2007 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2007. v, 42 p.
Series
TRITA-CHE-Report, ISSN 1654-1081 ; 2007:20
National Category
Inorganic Chemistry
Identifiers
urn:nbn:se:kth:diva-4336 (URN)978-91-7178-631-9 (ISBN)
Public defence
2007-04-27, K1, KTH, Teknikringen 56, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

Qc 20170222

Available from: 2007-04-17 Created: 2007-04-17 Last updated: 2017-02-22Bibliographically approved

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Jonsson, Mats

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