Comparative modeling of an in situ diffusion experiment in granite at the Grimsel Test Site

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F15%3A%230001714" target="_blank" >RIV/46356088:_____/15:#0001714 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jconhyd.2015.06.002" target="_blank" >http://dx.doi.org/10.1016/j.jconhyd.2015.06.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jconhyd.2015.06.002" target="_blank" >10.1016/j.jconhyd.2015.06.002</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparative modeling of an in situ diffusion experiment in granite at the Grimsel Test Site

Popis výsledku v původním jazyce

An in situ diffusion experiment was performed at the Grimsel Test Site (Switzerland). Several tracers (H-3 as HTO, Na-22(+), Cs-134(+), I-131(-) with stable I- as carrier) were continuously circulated through a packed-off borehole and the decrease in tracer concentrations in the liquid phase was monitored for a period of about 2 years. Subsequently, the borehole section was overcored and the tracer profiles in the rock analyzed (H-3, Na-22(+), Cs-134(+)) H-3 and Na-22(+) showed a similar decrease in activity in the circulation system (slightly larger drop for H-3). The drop in activity for Cs-134(+) was much more pronounced. Transport distances in the rock were about 20 cm for H-3, 10 cm for Na-22(+), and 1 cm for Cs-134(+). The dataset (except for I-131(-) because of complete decay at the end of the experiment) was analyzed with different diffusion-sorption models by different teams (IDAEA-CSIC, UJV-Rez, JAEA) using different codes, with the goal of obtaining effective diffusion coefficients (D-e) and porosity (phi) or rock capacity (alpha) values.

Název v anglickém jazyce

Comparative modeling of an in situ diffusion experiment in granite at the Grimsel Test Site

Popis výsledku anglicky

An in situ diffusion experiment was performed at the Grimsel Test Site (Switzerland). Several tracers (H-3 as HTO, Na-22(+), Cs-134(+), I-131(-) with stable I- as carrier) were continuously circulated through a packed-off borehole and the decrease in tracer concentrations in the liquid phase was monitored for a period of about 2 years. Subsequently, the borehole section was overcored and the tracer profiles in the rock analyzed (H-3, Na-22(+), Cs-134(+)) H-3 and Na-22(+) showed a similar decrease in activity in the circulation system (slightly larger drop for H-3). The drop in activity for Cs-134(+) was much more pronounced. Transport distances in the rock were about 20 cm for H-3, 10 cm for Na-22(+), and 1 cm for Cs-134(+). The dataset (except for I-131(-) because of complete decay at the end of the experiment) was analyzed with different diffusion-sorption models by different teams (IDAEA-CSIC, UJV-Rez, JAEA) using different codes, with the goal of obtaining effective diffusion coefficients (D-e) and porosity (phi) or rock capacity (alpha) values.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DL - Jaderné odpady, radioaktivní znečištění a kontrola

OECD FORD obor

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Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Contaminant Hydrology

ISSN

0169-7722

e-ISSN

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Svazek periodika

179

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

89-101

Kód UT WoS článku

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EID výsledku v databázi Scopus

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