The use of zeolites as amendments in radiocaesium- and radiostrontium-contaminated soils: A soil-chemical approach. Part III: A soil-chemical test to predict the potential effectiveness of zeolite amendments

Valcke, Elie; Vidal, Miquel; Cremers, Adrien; Ivanov, J; Perepelyatnikov, G.

doi:10.1016/s0144-2449(96)00148-0

“…These experiments must provide information on the adsorption-desorption behavior of the radionuclides in soils and materials as well as on the dynamics of the interaction, especially when facing medium and long-term scenarios. The optimal dose of material to be used must also be calculated to justify a remediation action that is economically sustainable (15).…”

Section: Introductionmentioning

confidence: 99%

“…After 3-4 equilibrations, the mixtures were again equilibrated with the same solution but labeled with 134 Cs and 85 Sr. After 1, 7, 14, and 21 days of end-over-end shaking, the 134 Cs and 85 Sr solution activities were measured using a solid scintillation detector to calculate KD(Cs) and KD(Sr) values. The KD for the soil or the amendment was determined by the same procedure but using 1.25 g of soil or amendment and 50 mL of the corresponding soil solution (15).…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Suitability of Soil Amendments To Reduce ¹³⁷Cs and ⁹⁰Sr Root Uptake in Meadows

Camps

¹

,

Rigol

²

,

Vidal

³

et al. 2003

Environ. Sci. Technol.

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In situ remediation strategies are an alternative approach in the management of radioactive contaminated areas, especially when based on modification of soil properties by the addition of amendments. Here, this strategy is applied to reduce 137Cs and 90Sr soil-plant transfer in meadows from areas of Russia, Belarus, and Ukraine affected by the Chernobyl fallout. Meadows were established on podzolic and peaty soils. Amendments covered a wide range of materials, such as loamy and sandy soils, polygorskite clay, phosphorite, turf, and sapropel. Field experiments showed the poor efficiency of most of the materials: only the polygorskite clay provoked a notable reduction (1.5-2-fold) in 137Cs root uptake. Subsequent laboratory characterization showed the lack of significant changes in the radiocesium interception potential and soil solution composition in the amended soils, a fact that helped to explain the lack of effect on the reduction of transfer. Moreover, a laboratory methodology based on the quantification of the adsorption potential of the amendments and the reversibility of the adsorption process was applied. This methodology was first proposed for the correct selection of the suitable materials to be used to decrease radionuclide root uptake in future remediation actions and then validated with data of the previous field experiments.

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Strontium: Radionuclides

Guillén¹,

Baeza²,

Salas³

2005

Encyclopedia of Inorganic Chemistry

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Strontium has several radioactive isotopes, with 90 Sr being the most important in the environment. This radionuclide dispersed worldwide as a consequence of the atmospheric nuclear weapon tests in the 1960s, and is locally enhanced owing to the accidents involving radioactive material. 90 Sr is a pure β‐emitter and it may be detected by several detection techniques (gas‐flow proportional, liquid scintillation, Cerenkov counting, and ICP‐MS), after an appropriate radiochemical separation. The environmental behavior of radiostrontium is governed by its chemical similarities to calcium. It is usually associated with the mobile and bioavailable fractions in soils, and with the low MW fraction in aquatic ecosystems. The potential human exposure to radiostrontium is mainly due to the ingestion of food, milk and cereals being the two major sources. This exposure can be reduced to some extent by the addition of calcium fertilizers to minimize the soil‐to‐plant transfer of radiostrontium, and by increasing cattle calcium intake to decrease the 90 Sr content in milk.

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Strontium: Radionuclides

Guillén¹,

Baeza²,

Salas³

2011

Encyclopedia of Inorganic and Bioinorganic Chemistry

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Strontium has several radioactive isotopes, with 90 Sr being the most important in the environment. This radionuclide dispersed worldwide as a consequence of the atmospheric nuclear weapon tests in the 1960s, and is locally enhanced owing to the accidents involving radioactive material. 90 Sr is a pure β‐emitter and it may be detected by several detection techniques (gas‐flow proportional, liquid scintillation, Cerenkov counting, and ICP‐MS), after an appropriate radiochemical separation. The environmental behavior of radiostrontium is governed by its chemical similarities to calcium. It is usually associated with the mobile and bioavailable fractions in soils, and with the low MW fraction in aquatic ecosystems. The potential human exposure to radiostrontium is mainly due to the ingestion of food, milk and cereals being the two major sources. This exposure can be reduced to some extent by the addition of calcium fertilizers to minimize the soil‐to‐plant transfer of radiostrontium, and by increasing cattle calcium intake to decrease the 90 Sr content in milk.

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The use of zeolites as amendments in radiocaesium- and radiostrontium-contaminated soils: A soil-chemical approach. Part III: A soil-chemical test to predict the potential effectiveness of zeolite amendments

Cited by 16 publications

References 14 publications

Assessment of the Suitability of Soil Amendments To Reduce ¹³⁷Cs and ⁹⁰Sr Root Uptake in Meadows

Assessment of the Suitability of Soil Amendments To Reduce ¹³⁷Cs and ⁹⁰Sr Root Uptake in Meadows

Strontium: Radionuclides

Strontium: Radionuclides

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The use of zeolites as amendments in radiocaesium- and radiostrontium-contaminated soils: A soil-chemical approach. Part III: A soil-chemical test to predict the potential effectiveness of zeolite amendments

Cited by 16 publications

References 14 publications

Assessment of the Suitability of Soil Amendments To Reduce 137Cs and 90Sr Root Uptake in Meadows

Assessment of the Suitability of Soil Amendments To Reduce 137Cs and 90Sr Root Uptake in Meadows

Strontium: Radionuclides

Strontium: Radionuclides

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Product

Resources

About

Assessment of the Suitability of Soil Amendments To Reduce ¹³⁷Cs and ⁹⁰Sr Root Uptake in Meadows

Assessment of the Suitability of Soil Amendments To Reduce ¹³⁷Cs and ⁹⁰Sr Root Uptake in Meadows