UnivTrevesV1, PascalFrancis, Corpus, bibRecord, 000D54

Application of a geochemical transport model to predict heavy metal retention (Pb) by clay liners

Identifieur interne : 000D54 ( PascalFrancis/Corpus ); précédent : 000D53; suivant : 000D55

Application of a geochemical transport model to predict heavy metal retention (Pb) by clay liners

Auteurs : Ray E. Ferrell ; Per Aagaard ; Johan Forsman ; Lea Greenwood ; ZUOPING ZHENG

Source :

Applied clay science [ 0169-1317 ] ; 2002.

RBID : Pascal:02-0235795

Descripteurs français

Pascal (Inist)
- Modèle, Transport, Prévision, Polluant, Pollution, Rétention, Métal lourd, Plomb, Argile, Simulation, Diffusivité, Epaisseur, Migration élément, Diffusion, Adsorption, Echange ion, Capacité échange cation, Porosité, Compacité, Densité.

English descriptors

KwdEn :
- adsorption, cation exchange capacity, clay, compactness, density, diffusion, diffusivity, heavy metals, ion exchange, lead, migration of elements, models, pollutants, pollution, porosity, prediction, retention, simulation, thickness, transport.

Abstract

PHREEQC, a geochemical transport model, is used to simulate diffusive transport of Pb through a 10-cm-thick clay liner. The results are compared to those of Roehl and Czurda [Applied Clay Science 12 (1998) 387] who studied Pb migration by diffusion in a carefully monitored laboratory experiment. The computer simulation accounts for effects due to adsorption by ion exchange, changes in CEC, variable ion selectivity, and porosity or compacted density. It facilitates evaluation of changes in the diffusion coefficient and solution input parameters. The effective Pb diffusion coefficient determined for the simulation is 3 X 10^-10 m² s^-1 and for the 520-day experiment of Roehl and Czurda it is 2.3 X 10^-10 m² s^- Differences in the retardation factors (23.6 and 503, respectively) indicate that the model does not account for all of the adsorption mechanisms suggested by the experimental investigation. Thus, less Pb is retained and the liner is predicted to fail more rapidly than the actual results indicate. Models have great flexibility, but need to be verified by field data before they can be applied to specific waste site conditions.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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C01	`01`		`ENG`	@0 PHREEQC, a geochemical transport model, is used to simulate diffusive transport of Pb through a 10-cm-thick clay liner. The results are compared to those of Roehl and Czurda [Applied Clay Science 12 (1998) 387] who studied Pb migration by diffusion in a carefully monitored laboratory experiment. The computer simulation accounts for effects due to adsorption by ion exchange, changes in CEC, variable ion selectivity, and porosity or compacted density. It facilitates evaluation of changes in the diffusion coefficient and solution input parameters. The effective Pb diffusion coefficient determined for the simulation is 3 X 10^-10 m² s^-1 and for the 520-day experiment of Roehl and Czurda it is 2.3 X 10^-10 m² s^- Differences in the retardation factors (23.6 and 503, respectively) indicate that the model does not account for all of the adsorption mechanisms suggested by the experimental investigation. Thus, less Pb is retained and the liner is predicted to fail more rapidly than the actual results indicate. Models have great flexibility, but need to be verified by field data before they can be applied to specific waste site conditions.
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Format Inist (serveur)

NO :	PASCAL 02-0235795 INIST
ET :	Application of a geochemical transport model to predict heavy metal retention (Pb) by clay liners
AU :	FERRELL (Ray E.); AAGAARD (Per); FORSMAN (Johan); GREENWOOD (Lea); ZUOPING ZHENG; CZURDA (Kurt A.); WAGNER (Jean-Frank)
AF :	Department of Geology and Geophysics, Louisiana State University/Baton Rouge, LA 70803/Etats-Unis (1 aut., 3 aut., 4 aut.); Department of Geology, University of Oslo/Oslo/Norvège (2 aut., 5 aut.); Department of Applied Geology, University of Karlsruhe, Kaiserstr. 12/76128 Karlsruhe/Allemagne (1 aut.); Geology Department, Faculty VI, University of Trier, Behringstrasse/54286 Trier/Allemagne (2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Applied clay science; ISSN 0169-1317; Coden ACLSER; Pays-Bas; Da. 2002; Vol. 21; No. 1-2; Pp. 59-66; Bibl. 10 ref.
LA :	Anglais
EA :	PHREEQC, a geochemical transport model, is used to simulate diffusive transport of Pb through a 10-cm-thick clay liner. The results are compared to those of Roehl and Czurda [Applied Clay Science 12 (1998) 387] who studied Pb migration by diffusion in a carefully monitored laboratory experiment. The computer simulation accounts for effects due to adsorption by ion exchange, changes in CEC, variable ion selectivity, and porosity or compacted density. It facilitates evaluation of changes in the diffusion coefficient and solution input parameters. The effective Pb diffusion coefficient determined for the simulation is 3 X 10^-10 m² s^-1 and for the 520-day experiment of Roehl and Czurda it is 2.3 X 10^-10 m² s^- Differences in the retardation factors (23.6 and 503, respectively) indicate that the model does not account for all of the adsorption mechanisms suggested by the experimental investigation. Thus, less Pb is retained and the liner is predicted to fail more rapidly than the actual results indicate. Models have great flexibility, but need to be verified by field data before they can be applied to specific waste site conditions.
CC :	226B04; 226B01; 001E01O04; 001E01O01
FD :	Modèle; Transport; Prévision; Polluant; Pollution; Rétention; Métal lourd; Plomb; Argile; Simulation; Diffusivité; Epaisseur; Migration élément; Diffusion; Adsorption; Echange ion; Capacité échange cation; Porosité; Compacité; Densité
FG :	Roche clastique; Roche sédimentaire
ED :	models; transport; prediction; pollutants; pollution; retention; heavy metals; lead; clay; simulation; diffusivity; thickness; migration of elements; diffusion; adsorption; ion exchange; cation exchange capacity; porosity; compactness; density
EG :	clastic rocks; sedimentary rocks
SD :	Modelo; Transporte; Previsión; Contaminante; Polución; Metal pesado; Plomo; Arcilla; Simulación; Espesor; Migración elementos; Difusión; Adsorción; Cambio iónico; Capacidad intercambio catión; Porosidad; Compacidad; Densidad
LO :	INIST-20859.354000100846800060
ID :	02-0235795

Links to Exploration step

Pascal:02-0235795

Le document en format XML

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<term>diffusion</term>
<term>diffusivity</term>
<term>heavy metals</term>
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<term>lead</term>
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<term>models</term>
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<term>Diffusivité</term>
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<term>Adsorption</term>
<term>Echange ion</term>
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<front><div type="abstract" xml:lang="en">PHREEQC, a geochemical transport model, is used to simulate diffusive transport of Pb through a 10-cm-thick clay liner. The results are compared to those of Roehl and Czurda [Applied Clay Science 12 (1998) 387] who studied Pb migration by diffusion in a carefully monitored laboratory experiment. The computer simulation accounts for effects due to adsorption by ion exchange, changes in CEC, variable ion selectivity, and porosity or compacted density. It facilitates evaluation of changes in the diffusion coefficient and solution input parameters. The effective Pb diffusion coefficient determined for the simulation is 3 X 10<sup>-10</sup>
 m<sup>2</sup>
 s<sup>-1</sup>
 and for the 520-day experiment of Roehl and Czurda it is 2.3 X 10<sup>-10</sup>
 m<sup>2</sup>
 s<sup>-</sup>
 Differences in the retardation factors (23.6 and 503, respectively) indicate that the model does not account for all of the adsorption mechanisms suggested by the experimental investigation. Thus, less Pb is retained and the liner is predicted to fail more rapidly than the actual results indicate. Models have great flexibility, but need to be verified by field data before they can be applied to specific waste site conditions.</div>
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<fA15 i1="02"><s1>Geology Department, Faculty VI, University of Trier, Behringstrasse</s1>
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</fA43>
<fA44><s0>0000</s0>
<s1>© 2002 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45><s0>10 ref.</s0>
</fA45>
<fA47 i1="01" i2="1"><s0>02-0235795</s0>
</fA47>
<fA60><s1>P</s1>
</fA60>
<fA61><s0>A</s0>
</fA61>
<fA64 i1="01" i2="1"><s0>Applied clay science</s0>
</fA64>
<fA66 i1="01"><s0>NLD</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>PHREEQC, a geochemical transport model, is used to simulate diffusive transport of Pb through a 10-cm-thick clay liner. The results are compared to those of Roehl and Czurda [Applied Clay Science 12 (1998) 387] who studied Pb migration by diffusion in a carefully monitored laboratory experiment. The computer simulation accounts for effects due to adsorption by ion exchange, changes in CEC, variable ion selectivity, and porosity or compacted density. It facilitates evaluation of changes in the diffusion coefficient and solution input parameters. The effective Pb diffusion coefficient determined for the simulation is 3 X 10<sup>-10</sup>
 m<sup>2</sup>
 s<sup>-1</sup>
 and for the 520-day experiment of Roehl and Czurda it is 2.3 X 10<sup>-10</sup>
 m<sup>2</sup>
 s<sup>-</sup>
 Differences in the retardation factors (23.6 and 503, respectively) indicate that the model does not account for all of the adsorption mechanisms suggested by the experimental investigation. Thus, less Pb is retained and the liner is predicted to fail more rapidly than the actual results indicate. Models have great flexibility, but need to be verified by field data before they can be applied to specific waste site conditions.</s0>
</fC01>
<fC02 i1="01" i2="2"><s0>226B04</s0>
</fC02>
<fC02 i1="02" i2="2"><s0>226B01</s0>
</fC02>
<fC02 i1="03" i2="X"><s0>001E01O04</s0>
</fC02>
<fC02 i1="04" i2="X"><s0>001E01O01</s0>
</fC02>
<fC03 i1="01" i2="2" l="FRE"><s0>Modèle</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="ENG"><s0>models</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="SPA"><s0>Modelo</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="2" l="FRE"><s0>Transport</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="2" l="ENG"><s0>transport</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="2" l="SPA"><s0>Transporte</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="2" l="FRE"><s0>Prévision</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="2" l="ENG"><s0>prediction</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="2" l="SPA"><s0>Previsión</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="2" l="FRE"><s0>Polluant</s0>
<s5>06</s5>
</fC03>
<fC03 i1="04" i2="2" l="ENG"><s0>pollutants</s0>
<s5>06</s5>
</fC03>
<fC03 i1="04" i2="2" l="SPA"><s0>Contaminante</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="2" l="FRE"><s0>Pollution</s0>
<s5>07</s5>
</fC03>
<fC03 i1="05" i2="2" l="ENG"><s0>pollution</s0>
<s5>07</s5>
</fC03>
<fC03 i1="05" i2="2" l="SPA"><s0>Polución</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="2" l="FRE"><s0>Rétention</s0>
<s5>08</s5>
</fC03>
<fC03 i1="06" i2="2" l="ENG"><s0>retention</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="2" l="FRE"><s0>Métal lourd</s0>
<s5>09</s5>
</fC03>
<fC03 i1="07" i2="2" l="ENG"><s0>heavy metals</s0>
<s5>09</s5>
</fC03>
<fC03 i1="07" i2="2" l="SPA"><s0>Metal pesado</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="2" l="FRE"><s0>Plomb</s0>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="2" l="ENG"><s0>lead</s0>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="2" l="SPA"><s0>Plomo</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="2" l="FRE"><s0>Argile</s0>
<s2>NV</s2>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="2" l="ENG"><s0>clay</s0>
<s2>NV</s2>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="2" l="SPA"><s0>Arcilla</s0>
<s2>NV</s2>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="2" l="FRE"><s0>Simulation</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="2" l="ENG"><s0>simulation</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="2" l="SPA"><s0>Simulación</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="2" l="FRE"><s0>Diffusivité</s0>
<s5>13</s5>
</fC03>
<fC03 i1="11" i2="2" l="ENG"><s0>diffusivity</s0>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="2" l="FRE"><s0>Epaisseur</s0>
<s5>14</s5>
</fC03>
<fC03 i1="12" i2="2" l="ENG"><s0>thickness</s0>
<s5>14</s5>
</fC03>
<fC03 i1="12" i2="2" l="SPA"><s0>Espesor</s0>
<s5>14</s5>
</fC03>
<fC03 i1="13" i2="2" l="FRE"><s0>Migration élément</s0>
<s5>15</s5>
</fC03>
<fC03 i1="13" i2="2" l="ENG"><s0>migration of elements</s0>
<s5>15</s5>
</fC03>
<fC03 i1="13" i2="2" l="SPA"><s0>Migración elementos</s0>
<s5>15</s5>
</fC03>
<fC03 i1="14" i2="2" l="FRE"><s0>Diffusion</s0>
<s5>16</s5>
</fC03>
<fC03 i1="14" i2="2" l="ENG"><s0>diffusion</s0>
<s5>16</s5>
</fC03>
<fC03 i1="14" i2="2" l="SPA"><s0>Difusión</s0>
<s5>16</s5>
</fC03>
<fC03 i1="15" i2="2" l="FRE"><s0>Adsorption</s0>
<s5>19</s5>
</fC03>
<fC03 i1="15" i2="2" l="ENG"><s0>adsorption</s0>
<s5>19</s5>
</fC03>
<fC03 i1="15" i2="2" l="SPA"><s0>Adsorción</s0>
<s5>19</s5>
</fC03>
<fC03 i1="16" i2="2" l="FRE"><s0>Echange ion</s0>
<s5>20</s5>
</fC03>
<fC03 i1="16" i2="2" l="ENG"><s0>ion exchange</s0>
<s5>20</s5>
</fC03>
<fC03 i1="16" i2="2" l="SPA"><s0>Cambio iónico</s0>
<s5>20</s5>
</fC03>
<fC03 i1="17" i2="2" l="FRE"><s0>Capacité échange cation</s0>
<s5>21</s5>
</fC03>
<fC03 i1="17" i2="2" l="ENG"><s0>cation exchange capacity</s0>
<s5>21</s5>
</fC03>
<fC03 i1="17" i2="2" l="SPA"><s0>Capacidad intercambio catión</s0>
<s5>21</s5>
</fC03>
<fC03 i1="18" i2="2" l="FRE"><s0>Porosité</s0>
<s5>23</s5>
</fC03>
<fC03 i1="18" i2="2" l="ENG"><s0>porosity</s0>
<s5>23</s5>
</fC03>
<fC03 i1="18" i2="2" l="SPA"><s0>Porosidad</s0>
<s5>23</s5>
</fC03>
<fC03 i1="19" i2="2" l="FRE"><s0>Compacité</s0>
<s5>24</s5>
</fC03>
<fC03 i1="19" i2="2" l="ENG"><s0>compactness</s0>
<s5>24</s5>
</fC03>
<fC03 i1="19" i2="2" l="SPA"><s0>Compacidad</s0>
<s5>24</s5>
</fC03>
<fC03 i1="20" i2="2" l="FRE"><s0>Densité</s0>
<s5>25</s5>
</fC03>
<fC03 i1="20" i2="2" l="ENG"><s0>density</s0>
<s5>25</s5>
</fC03>
<fC03 i1="20" i2="2" l="SPA"><s0>Densidad</s0>
<s5>25</s5>
</fC03>
<fC06><s0>ILS</s0>
<s0>TAS</s0>
</fC06>
<fC07 i1="01" i2="2" l="FRE"><s0>Roche clastique</s0>
<s2>NV</s2>
</fC07>
<fC07 i1="01" i2="2" l="ENG"><s0>clastic rocks</s0>
<s2>NV</s2>
</fC07>
<fC07 i1="01" i2="2" l="SPA"><s0>Roca clástica</s0>
<s2>NV</s2>
</fC07>
<fC07 i1="02" i2="2" l="FRE"><s0>Roche sédimentaire</s0>
</fC07>
<fC07 i1="02" i2="2" l="ENG"><s0>sedimentary rocks</s0>
</fC07>
<fC07 i1="02" i2="2" l="SPA"><s0>Roca sedimentaria</s0>
</fC07>
<fN21><s1>140</s1>
</fN21>
<fN82><s1>PSI</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 02-0235795 INIST</NO>
<ET>Application of a geochemical transport model to predict heavy metal retention (Pb) by clay liners</ET>
<AU>FERRELL (Ray E.); AAGAARD (Per); FORSMAN (Johan); GREENWOOD (Lea); ZUOPING ZHENG; CZURDA (Kurt A.); WAGNER (Jean-Frank)</AU>
<AF>Department of Geology and Geophysics, Louisiana State University/Baton Rouge, LA 70803/Etats-Unis (1 aut., 3 aut., 4 aut.); Department of Geology, University of Oslo/Oslo/Norvège (2 aut., 5 aut.); Department of Applied Geology, University of Karlsruhe, Kaiserstr. 12/76128 Karlsruhe/Allemagne (1 aut.); Geology Department, Faculty VI, University of Trier, Behringstrasse/54286 Trier/Allemagne (2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Applied clay science; ISSN 0169-1317; Coden ACLSER; Pays-Bas; Da. 2002; Vol. 21; No. 1-2; Pp. 59-66; Bibl. 10 ref.</SO>
<LA>Anglais</LA>
<EA>PHREEQC, a geochemical transport model, is used to simulate diffusive transport of Pb through a 10-cm-thick clay liner. The results are compared to those of Roehl and Czurda [Applied Clay Science 12 (1998) 387] who studied Pb migration by diffusion in a carefully monitored laboratory experiment. The computer simulation accounts for effects due to adsorption by ion exchange, changes in CEC, variable ion selectivity, and porosity or compacted density. It facilitates evaluation of changes in the diffusion coefficient and solution input parameters. The effective Pb diffusion coefficient determined for the simulation is 3 X 10<sup>-10</sup>
 m<sup>2</sup>
 s<sup>-1</sup>
 and for the 520-day experiment of Roehl and Czurda it is 2.3 X 10<sup>-10</sup>
 m<sup>2</sup>
 s<sup>-</sup>
 Differences in the retardation factors (23.6 and 503, respectively) indicate that the model does not account for all of the adsorption mechanisms suggested by the experimental investigation. Thus, less Pb is retained and the liner is predicted to fail more rapidly than the actual results indicate. Models have great flexibility, but need to be verified by field data before they can be applied to specific waste site conditions.</EA>
<CC>226B04; 226B01; 001E01O04; 001E01O01</CC>
<FD>Modèle; Transport; Prévision; Polluant; Pollution; Rétention; Métal lourd; Plomb; Argile; Simulation; Diffusivité; Epaisseur; Migration élément; Diffusion; Adsorption; Echange ion; Capacité échange cation; Porosité; Compacité; Densité</FD>
<FG>Roche clastique; Roche sédimentaire</FG>
<ED>models; transport; prediction; pollutants; pollution; retention; heavy metals; lead; clay; simulation; diffusivity; thickness; migration of elements; diffusion; adsorption; ion exchange; cation exchange capacity; porosity; compactness; density</ED>
<EG>clastic rocks; sedimentary rocks</EG>
<SD>Modelo; Transporte; Previsión; Contaminante; Polución; Metal pesado; Plomo; Arcilla; Simulación; Espesor; Migración elementos; Difusión; Adsorción; Cambio iónico; Capacidad intercambio catión; Porosidad; Compacidad; Densidad</SD>
<LO>INIST-20859.354000100846800060</LO>
<ID>02-0235795</ID>
</server>
</inist>
</record>

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Application of a geochemical transport model to predict heavy metal retention (Pb) by clay liners

Application of a geochemical transport model to predict heavy metal retention (Pb) by clay liners

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