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Environmental simulation test for radionuclide migration under wet-dry cycle condition in aerated zone

Technical Report:

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  More>>
Authors:
Tanaka, Tadao; Yamamoto, Tadatoshi [1] 
  1. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Publication Date:
Aug 01, 1994
Product Type:
Technical Report
Report Number:
JAERI-Research-94-010
Reference Number:
SCA: 540230; PA: JPN-94:012133; EDB-95:024756; SN: 95001319941
Resource Relation:
Other Information: PBD: Aug 1994
Subject:
54 ENVIRONMENTAL SCIENCES; LOW-LEVEL RADIOACTIVE WASTES; RADIONUCLIDE MIGRATION; GROUND DISPOSAL; RADIOACTIVE WASTE DISPOSAL; SIMULATION; NATURAL ANALOGUE; NATURAL CONVECTION; CONCENTRATION RATIO; PH VALUE; SORPTION; DEPTH; SPATIAL DISTRIBUTION; COBALT 60; STRONTIUM 85; CESIUM 137; 540230; RADIOACTIVE MATERIALS MONITORING AND TRANSPORT
OSTI ID:
10109278
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE95737225; TRN: JP9412133
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
38 p.
Announcement Date:
Jun 30, 2005

Technical Report:

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}
}