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The use of zeolites in countermeasure strategy: predicted versus observed effects

Abstract

Among the possible remedial actions to reduce the soil-to-plant transfer of radiocaesium and radiostrontium, the addition of clay minerals or zeolites aims at increasing permanently the radionuclide fraction adsorbed on the solid phase, thus lowering the radionuclide solution level available for root uptake. The traditional procedure to test the effectiveness of such amendments is rather empirical: the amendments are applied to the soil and the effect is expressed in terms of the change of the transfer factor, defined as the ratio of Bq per kilogram plant and soil. This procedure yields no insight in the processes responsible for the observed effect and does not allow predictions for other scenarios. Based on the knowledge that soil-to-plant transfer essentially depends on soil type, the use of soil amendments was investigated by quantitatively addressing the physico-chemical parameters which govern solid/liquid partitioning of radionuclides in soils and soil amendments. It is shown that this approach allows to identify the potential soil/amendment combinations to estimate the effects to be expected.
Publication Date:
Sep 18, 1996
Product Type:
Conference
Report Number:
BLG-721; CONF-9609448-
Reference Number:
SCA: 220502; PA: AIX-29:033605; EDB-98:072927; SN: 98001972122
Resource Relation:
Conference: Topical day on site remediation, Mol (Belgium), 18 Sep 1996; Other Information: PBD: 18 Sep 1996; Related Information: Is Part Of Topical Day on Site Remediation; Vandenhove, H. [ed.]; PB: 90 p.
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; CESIUM; DECONTAMINATION; ENVIRONMENTAL ENGINEERING; ENVIRONMENTAL IMPACTS; LAND POLLUTION; LAND USE; PLANTS; REMEDIAL ACTION; SOILS; ZEOLITES
OSTI ID:
621011
Research Organizations:
Centre de l`Etude de l`Energie Nucleaire, Mol (Belgium).
Country of Origin:
Belgium
Language:
English
Other Identifying Numbers:
Other: ON: DE98626869; TRN: BE9800016033605
Availability:
INIS; OSTI as DE98626869
Submitting Site:
BEN
Size:
pp. 36-41
Announcement Date:

Citation Formats

Valcke, E, Van Hees, M, and Cremers, A. The use of zeolites in countermeasure strategy: predicted versus observed effects. Belgium: N. p., 1996. Web.
Valcke, E, Van Hees, M, & Cremers, A. The use of zeolites in countermeasure strategy: predicted versus observed effects. Belgium.
Valcke, E, Van Hees, M, and Cremers, A. 1996. "The use of zeolites in countermeasure strategy: predicted versus observed effects." Belgium.
@misc{etde_621011,
title = {The use of zeolites in countermeasure strategy: predicted versus observed effects}
author = {Valcke, E, Van Hees, M, and Cremers, A}
abstractNote = {Among the possible remedial actions to reduce the soil-to-plant transfer of radiocaesium and radiostrontium, the addition of clay minerals or zeolites aims at increasing permanently the radionuclide fraction adsorbed on the solid phase, thus lowering the radionuclide solution level available for root uptake. The traditional procedure to test the effectiveness of such amendments is rather empirical: the amendments are applied to the soil and the effect is expressed in terms of the change of the transfer factor, defined as the ratio of Bq per kilogram plant and soil. This procedure yields no insight in the processes responsible for the observed effect and does not allow predictions for other scenarios. Based on the knowledge that soil-to-plant transfer essentially depends on soil type, the use of soil amendments was investigated by quantitatively addressing the physico-chemical parameters which govern solid/liquid partitioning of radionuclides in soils and soil amendments. It is shown that this approach allows to identify the potential soil/amendment combinations to estimate the effects to be expected.}
place = {Belgium}
year = {1996}
month = {Sep}
}