Abstract
Influence of discontinuous water flow based on repeated cycle of rainfall and evaporation (wet-dry cycle condition) on the migration behavior of {sup 60}Co, {sup 85}Sr and {sup 137}Cs in a sandy soil layer has been demonstratively investigated by using the equipment of environmental simulation test for radionuclide migration, in order to establish a reliable evaluation method of the radionuclide migration in natural barrier, in relation to the safety assessment on shallow land disposal of low-level radioactive waste. Migration velocity of cationic {sup 85}Sr, concentrations of particulate {sup 60}Co and {sup 137}Cs in the deeper soil layer, pH and ion concentration dissolved in the soil layer under the wet-dry cycle condition became larger than those under the continuous flow condition. Increase of the migration velocity of cationic {sup 85}Sr under the wet-dry cycle condition was attributed to that the concentration of Ca{sup 2+}, by which the sorption ability of {sup 85}Sr onto soils was reduced, increased in interstitial water during an interruption period of water flow. On the other hand, the migration velocity of cationic {sup 60}Co and {sup 137}Cs was not affected by the wet-dry cycle condition. Increase of the concentration of particulate {sup 60}Co and {sup 137}Cs under the
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Tanaka, Tadao;
Yamamoto, Tadatoshi
[1]
- Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Citation Formats
Tanaka, Tadao, and Yamamoto, Tadatoshi.
Environmental simulation test for radionuclide migration under wet-dry cycle condition in aerated zone.
Japan: N. p.,
1994.
Web.
Tanaka, Tadao, & Yamamoto, Tadatoshi.
Environmental simulation test for radionuclide migration under wet-dry cycle condition in aerated zone.
Japan.
Tanaka, Tadao, and Yamamoto, Tadatoshi.
1994.
"Environmental simulation test for radionuclide migration under wet-dry cycle condition in aerated zone."
Japan.
@misc{etde_10109278,
title = {Environmental simulation test for radionuclide migration under wet-dry cycle condition in aerated zone}
author = {Tanaka, Tadao, and Yamamoto, Tadatoshi}
abstractNote = {Influence of discontinuous water flow based on repeated cycle of rainfall and evaporation (wet-dry cycle condition) on the migration behavior of {sup 60}Co, {sup 85}Sr and {sup 137}Cs in a sandy soil layer has been demonstratively investigated by using the equipment of environmental simulation test for radionuclide migration, in order to establish a reliable evaluation method of the radionuclide migration in natural barrier, in relation to the safety assessment on shallow land disposal of low-level radioactive waste. Migration velocity of cationic {sup 85}Sr, concentrations of particulate {sup 60}Co and {sup 137}Cs in the deeper soil layer, pH and ion concentration dissolved in the soil layer under the wet-dry cycle condition became larger than those under the continuous flow condition. Increase of the migration velocity of cationic {sup 85}Sr under the wet-dry cycle condition was attributed to that the concentration of Ca{sup 2+}, by which the sorption ability of {sup 85}Sr onto soils was reduced, increased in interstitial water during an interruption period of water flow. On the other hand, the migration velocity of cationic {sup 60}Co and {sup 137}Cs was not affected by the wet-dry cycle condition. Increase of the concentration of particulate {sup 60}Co and {sup 137}Cs under the wet-dry cycle condition was probably caused from that movable {l_brace}{sup 60}Co(OH){sub 2}{r_brace}{sub n} and {sup 137}Cs fixed on fine soil particles were produced during the interruption period. (author).}
place = {Japan}
year = {1994}
month = {Aug}
}
title = {Environmental simulation test for radionuclide migration under wet-dry cycle condition in aerated zone}
author = {Tanaka, Tadao, and Yamamoto, Tadatoshi}
abstractNote = {Influence of discontinuous water flow based on repeated cycle of rainfall and evaporation (wet-dry cycle condition) on the migration behavior of {sup 60}Co, {sup 85}Sr and {sup 137}Cs in a sandy soil layer has been demonstratively investigated by using the equipment of environmental simulation test for radionuclide migration, in order to establish a reliable evaluation method of the radionuclide migration in natural barrier, in relation to the safety assessment on shallow land disposal of low-level radioactive waste. Migration velocity of cationic {sup 85}Sr, concentrations of particulate {sup 60}Co and {sup 137}Cs in the deeper soil layer, pH and ion concentration dissolved in the soil layer under the wet-dry cycle condition became larger than those under the continuous flow condition. Increase of the migration velocity of cationic {sup 85}Sr under the wet-dry cycle condition was attributed to that the concentration of Ca{sup 2+}, by which the sorption ability of {sup 85}Sr onto soils was reduced, increased in interstitial water during an interruption period of water flow. On the other hand, the migration velocity of cationic {sup 60}Co and {sup 137}Cs was not affected by the wet-dry cycle condition. Increase of the concentration of particulate {sup 60}Co and {sup 137}Cs under the wet-dry cycle condition was probably caused from that movable {l_brace}{sup 60}Co(OH){sub 2}{r_brace}{sub n} and {sup 137}Cs fixed on fine soil particles were produced during the interruption period. (author).}
place = {Japan}
year = {1994}
month = {Aug}
}