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Particles and solutes migration in porous medium : radionuclides and clayey particles simultaneous transport under the effect of a salinity gradient; Migration de particules et de solutes en milieu poreux : modelisation du transport simultane de particules argileuses et de radionucleides sous l`effet d`un gradient de salinite

Abstract

This work deals with the radiation protection of high-level and long-life radioactive waste storages. The colloids presence in ground waters can accelerate the radionuclides migration in natural geological deposits. The aim of this thesis is then to control particularly the particles motion in porous medium in order to anticipate quantitatively their migration. Liquid chromatography columns are filled with a clayey sand and fed with a decreasing concentration sodium chloride solution in order to study the particles outlet under a salinity gradient. When the porous medium undergoes a decrease of salinity it deteriorates. The adsorption of the cations : sodium 22, calcium 45, cesium 137 and neptunium 237 is then studied by the ions exchange method. The radionuclide solution is injected before the decrease of the feed solution salinity. The decrease of the sodium chloride concentration leads to the decrease of the radionuclides concentration because the adsorption competition between the sodium ion and the injected cation is lower. The particles transport, without fouling of the porous medium, is carried out in particular physical and chemical conditions which are described. (O.L.). 71 refs., 105 figs., 26 tabs.
Authors:
Publication Date:
Mar 29, 1994
Product Type:
Thesis/Dissertation
Report Number:
FRCEA-TH-513
Reference Number:
SCA: 052002; PA: AIX-27:048627; EDB-96:097825; NTS-96:018751; SN: 96001611997
Resource Relation:
Other Information: TH: These (D. es Sc.).; PBD: 29 Mar 1994
Subject:
05 NUCLEAR FUELS; HIGH-LEVEL RADIOACTIVE WASTES; RADIATION PROTECTION; RADIOACTIVE WASTE STORAGE; RADIONUCLIDE MIGRATION; ADSORPTION; C CODES; CALCIUM 45; CESIUM 137; CLAYS; COLLOIDS; COMPUTERIZED SIMULATION; CONTAMINATION; FOULING; FRANCE; GROUND WATER; I CODES; IAEA; ION EXCHANGE; LEACHING; LIQUID COLUMN CHROMATOGRAPHY; MASS TRANSFER; MULTI-ELEMENT SEPARATION; NEPTUNIUM 237; OECD; SALINITY; SODIUM CHLORIDES; SODIUM 22; TRANSMUTATION; ULTRAVIOLET SPECTRA
OSTI ID:
246822
Research Organizations:
CEA Centre d`Etudes de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. Stockage Dechets
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE96627584; TRN: FR9601102048627
Availability:
INIS; OSTI as DE96627584
Submitting Site:
FRN
Size:
180 p.
Announcement Date:
Jul 12, 1996

Citation Formats

Faure, M H. Particles and solutes migration in porous medium : radionuclides and clayey particles simultaneous transport under the effect of a salinity gradient; Migration de particules et de solutes en milieu poreux : modelisation du transport simultane de particules argileuses et de radionucleides sous l`effet d`un gradient de salinite. France: N. p., 1994. Web.
Faure, M H. Particles and solutes migration in porous medium : radionuclides and clayey particles simultaneous transport under the effect of a salinity gradient; Migration de particules et de solutes en milieu poreux : modelisation du transport simultane de particules argileuses et de radionucleides sous l`effet d`un gradient de salinite. France.
Faure, M H. 1994. "Particles and solutes migration in porous medium : radionuclides and clayey particles simultaneous transport under the effect of a salinity gradient; Migration de particules et de solutes en milieu poreux : modelisation du transport simultane de particules argileuses et de radionucleides sous l`effet d`un gradient de salinite." France.
@misc{etde_246822,
title = {Particles and solutes migration in porous medium : radionuclides and clayey particles simultaneous transport under the effect of a salinity gradient; Migration de particules et de solutes en milieu poreux : modelisation du transport simultane de particules argileuses et de radionucleides sous l`effet d`un gradient de salinite}
author = {Faure, M H}
abstractNote = {This work deals with the radiation protection of high-level and long-life radioactive waste storages. The colloids presence in ground waters can accelerate the radionuclides migration in natural geological deposits. The aim of this thesis is then to control particularly the particles motion in porous medium in order to anticipate quantitatively their migration. Liquid chromatography columns are filled with a clayey sand and fed with a decreasing concentration sodium chloride solution in order to study the particles outlet under a salinity gradient. When the porous medium undergoes a decrease of salinity it deteriorates. The adsorption of the cations : sodium 22, calcium 45, cesium 137 and neptunium 237 is then studied by the ions exchange method. The radionuclide solution is injected before the decrease of the feed solution salinity. The decrease of the sodium chloride concentration leads to the decrease of the radionuclides concentration because the adsorption competition between the sodium ion and the injected cation is lower. The particles transport, without fouling of the porous medium, is carried out in particular physical and chemical conditions which are described. (O.L.). 71 refs., 105 figs., 26 tabs.}
place = {France}
year = {1994}
month = {Mar}
}