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Simulations of H2O2 concentration profiles in the water surrounding spent nuclear fuel taking mixed radiation fields and bulk reactions into account
KTH, Skolan för kemivetenskap (CHE), Kemi, Kärnkemi (stängd 20110630).
KTH, Skolan för kemivetenskap (CHE), Kemi, Kärnkemi (stängd 20110630).ORCID-id: 0000-0003-0663-0751
2008 (engelsk)Inngår i: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 374, nr 1-2, s. 281-285Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

To simulate the dynamics of the concentration gradient of hydrogen peroxide in groundwater surrounding spent nuclear fuel under various conditions, a model has been developed. The model treats the water volume as a sequence of volume elements, and applies the processes that affect hydrogen peroxide concentration to each volume element. The surface steady-state concentrations of H2O2, and the time. to reach steady-state, have been determined under different conditions. The processes accounted for in the model are radiolytic production of H2O2 from alpha- and beta-radiation, surface reactions consuming H2O2, homogeneous reactions consuming H2O2, and diffusion. The system has been modeled mainly for different surface reaction rate constants and homogeneous (bulk) reaction rate constants. The simulations show that the surface concentration of H2O2 approaches the steady-state concentration very rapidly and that the impact of homogeneous (bulk) reactions consuming H2O2 On the steady-state concentration is significant.

sted, utgiver, år, opplag, sider
2008. Vol. 374, nr 1-2, s. 281-285
Emneord [en]
Computer simulation; Diffusion; Groundwater; Hydrogen peroxide; Rate constants; Radiation fields; Steady-state concentration; Volume elements; Nuclear fuels
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-17408ISI: 000254413900033Scopus ID: 2-s2.0-38749106122OAI: oai:DiVA.org:kth-17408DiVA, id: diva2:335452
Merknad

QC 20100525

Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-06-02bibliografisk 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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