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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, School of Chemical Science and Engineering (CHE), Chemistry, Nuclear Chemistry (closed 20110630).
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Nuclear Chemistry (closed 20110630).ORCID iD: 0000-0003-0663-0751
2008 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 374, no 1-2, 281-285 p.Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
2008. Vol. 374, no 1-2, 281-285 p.
Keyword [en]
Computer simulation; Diffusion; Groundwater; Hydrogen peroxide; Rate constants; Radiation fields; Steady-state concentration; Volume elements; Nuclear fuels
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-17408ISI: 000254413900033Scopus ID: 2-s2.0-38749106122OAI: oai:DiVA.org:kth-17408DiVA: diva2:335452
Note

QC 20100525

Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-06-02Bibliographically 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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