Study of 85Sr transport through a column filled with crushed granite in the presence of bentonite colloids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F17%3AN0000023" target="_blank" >RIV/46356088:_____/17:N0000023 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1144/SP443.14" target="_blank" >http://dx.doi.org/10.1144/SP443.14</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1144/SP443.14" target="_blank" >10.1144/SP443.14</a>

Result language

angličtina

Original language name

Study of 85Sr transport through a column filled with crushed granite in the presence of bentonite colloids

Original language description

The present work is focused on the study of strontium transport through crushed granite in the presence of bentonite colloids under dynamic arrangement. The aim of the experiments was to investigate the effect of bentonite colloids on strontium migration in crushed granite. The tracer behaviour was studied in a column set-up under aerobic conditions with a continuous inlet of the liquid phase of a constant tracer concentration (activity) and flow rate. Defined volumes of liquid phase were sampled at periodic time intervals at the column outlet for the measurements of tracer concentrations (activity). The transport was described by breakthrough curves. The stepwise approach included these steps: (1) an evaluation of the hydrodynamic column properties by the non-sorbing tracer 3H; (2) a column experiment with bentonite colloids in deionized water was performed; (3) migration of 85Sr solution in two liquid phases (deionized and synthetic granitic water); and (4) the transport of a radiocolloid suspension in deionized water was studied. Results showed different behaviour of bentonite colloids and strontium in the column. Bentonite colloids behaved as a non-sorbing tracer: Conversely, strontium showed strong sorption on granitic material. The strontium transport in the presence of bentonite colloids differed from strontium transport itself. The strontium transport in the presence of colloids was faster than transport without the bentonite colloids. The observed retention of strontium on granite suggests a higher affinity of strontium towards granitic rock than towards bentonite colloids, and showed the reversibility of the sorption of strontium on bentonite colloids.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

Project

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Continuities

R - Projekt Ramcoveho programu EK

Publication year

2017

Confidentiality

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

Article name in the collection

Radioactive Waste Confinement: Clays in Natural and Engineered Barriers

ISBN

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ISSN

0305-8719

e-ISSN

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Number of pages

11

Pages from-to

1-11

Publisher name

Geological Society, London

Place of publication

London

Event location

Brussels, Belgium

Event date

Jan 1, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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