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Experimental study and computerized simulation of the elements fixation in trace on mineral oxides. Contribution to the study of natural solids adsorption properties; Etude experimentale et modelisation de la fixation d`elements en trace sur des oxydes mineraux. Contribution a l`etude des proprietes adsorbantes des solides naturels

Abstract

The aim of this work is to identify some natural or synthetical materials allowing the nuclear wastes confinement in underground geological sites by adsorption of radioelements. The materials composition variety which can be used is very large it is then necessary to make use of models able to predict solid complexes behaviour towards the adsorption from known properties of parent constituents. This type of model still does not exist and its focusing requires the demonstration of mineral complexes parent constituents intrinsic properties additivity. The oxides as aluminium or silicon oxides being parent constituents, the author has demonstrated their properties additivity in an aluminium-silicon oxides physical mixture and in an aluminium silicate : the kaolinite. These surface properties have been determined for different quantities of aluminium and silicon oxides in a 0,1 M sodium nitrate. This study has been realized following the steps below : choice of a theoretical concept describing the adsorption adapted to the studied solid-solution system : the surface complexation model at constant capacitance; the focusing of a surface chemical and physical parameters determination method; the verification of these properties additivity on the aluminium-silicon oxides mixture and on the kaolinite. The studied cation for the adsorption on these  More>>
Authors:
Publication Date:
Dec 01, 1994
Product Type:
Thesis/Dissertation
Report Number:
FRCEA-TH-510
Reference Number:
SCA: 052002; 540250; PA: AIX-27:048626; EDB-96:097866; NTS-96:018683; NTS-96:019013; SN: 96001611996
Resource Relation:
Other Information: TH: These (D. es Sc.).; PBD: Dec 1994
Subject:
05 NUCLEAR FUELS; 54 ENVIRONMENTAL SCIENCES; RADIOACTIVE WASTE DISPOSAL; GEOCHEMISTRY; YTTERBIUM; ADSORPTION; ALUMINIUM OXIDES; SILICON OXIDES; AMERICIUM; CHEMICAL REACTION KINETICS; COMPLEXOMETRY; COMPUTERIZED SIMULATION; CONFINEMENT; F CODES; FISSION PRODUCTS; GOETHITE; HEMATITE; HYDRATION; HYDROLYSIS; ION EXCHANGE; KAOLINITE; LANTHANUM; NEPTUNIUM; PACKAGING; PLUTONIUM; WIPP
OSTI ID:
246821
Research Organizations:
CEA Centre d`Etudes Nucleaires de Cadarache, 13 - Saint-Paul-lez-Durance (France). Direction du Cycle du Combustible; CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France). Dept. d`Astrophysique, de la Physique des Particules, de la Physique Nucleaire et de l`Instrumentation Associee
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE96627583; TRN: FR9600945048626
Availability:
INIS; OSTI as DE96627583
Submitting Site:
FRN
Size:
192 p.
Announcement Date:
Jul 12, 1996

Citation Formats

Marmier, N. Experimental study and computerized simulation of the elements fixation in trace on mineral oxides. Contribution to the study of natural solids adsorption properties; Etude experimentale et modelisation de la fixation d`elements en trace sur des oxydes mineraux. Contribution a l`etude des proprietes adsorbantes des solides naturels. France: N. p., 1994. Web.
Marmier, N. Experimental study and computerized simulation of the elements fixation in trace on mineral oxides. Contribution to the study of natural solids adsorption properties; Etude experimentale et modelisation de la fixation d`elements en trace sur des oxydes mineraux. Contribution a l`etude des proprietes adsorbantes des solides naturels. France.
Marmier, N. 1994. "Experimental study and computerized simulation of the elements fixation in trace on mineral oxides. Contribution to the study of natural solids adsorption properties; Etude experimentale et modelisation de la fixation d`elements en trace sur des oxydes mineraux. Contribution a l`etude des proprietes adsorbantes des solides naturels." France.
@misc{etde_246821,
title = {Experimental study and computerized simulation of the elements fixation in trace on mineral oxides. Contribution to the study of natural solids adsorption properties; Etude experimentale et modelisation de la fixation d`elements en trace sur des oxydes mineraux. Contribution a l`etude des proprietes adsorbantes des solides naturels}
author = {Marmier, N}
abstractNote = {The aim of this work is to identify some natural or synthetical materials allowing the nuclear wastes confinement in underground geological sites by adsorption of radioelements. The materials composition variety which can be used is very large it is then necessary to make use of models able to predict solid complexes behaviour towards the adsorption from known properties of parent constituents. This type of model still does not exist and its focusing requires the demonstration of mineral complexes parent constituents intrinsic properties additivity. The oxides as aluminium or silicon oxides being parent constituents, the author has demonstrated their properties additivity in an aluminium-silicon oxides physical mixture and in an aluminium silicate : the kaolinite. These surface properties have been determined for different quantities of aluminium and silicon oxides in a 0,1 M sodium nitrate. This study has been realized following the steps below : choice of a theoretical concept describing the adsorption adapted to the studied solid-solution system : the surface complexation model at constant capacitance; the focusing of a surface chemical and physical parameters determination method; the verification of these properties additivity on the aluminium-silicon oxides mixture and on the kaolinite. The studied cation for the adsorption on these materials is the ytterbium trivalent ion because the behaviour of the trivalent ions towards the adsorption is not very well known and because the lanthanides are considered as compounds similar to some fission products present in radioactive wastes. The method used for this work is applicable to all the other ions. (O.L.). 73 refs., 91 figs., 14 tabs.}
place = {France}
year = {1994}
month = {Dec}
}