Effect of periodic wetting and drying on selective sorption of ¹³⁷Cs by mixtures of soil and organomineral sorbent

The incubation of sandy soddy-podzolic soil with a three-component organomineral sorbent (OMS) on the basis of sapropel, neutralized hydrolysis lignin, and clay-salt slime under alternating wetting-drying (W-D) conditions for two years has increased the selective sorption of ¹³⁷Cs by 2.5–5 times. Th...

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Bibliographic Details
Published in:Eurasian soil science 2014, Vol.47 (5), p.432-440
Main Authors: Popov, V. E, Maslova, K. M, Stepina, I. A
Format: Article
Language:English
Subjects:
drying
Earth and Environmental Science
Earth Sciences
Geotechnical Engineering & Applied Earth Sciences
hydrolysis
lignin
soil
Soil Physics
sorption
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Summary:The incubation of sandy soddy-podzolic soil with a three-component organomineral sorbent (OMS) on the basis of sapropel, neutralized hydrolysis lignin, and clay-salt slime under alternating wetting-drying (W-D) conditions for two years has increased the selective sorption of ¹³⁷Cs by 2.5–5 times. The addition of 5% OMS increases the effect of periodic W-D cycles on the selective sorption of ¹³⁷Cs compared to the addition of 10% OMS. The relationship between the ¹³⁷Cs interception potential and the number of W-D cycles has been predicted on the basis of the additivity rule and under the assumption that this potential linearly depends on the number of W-D cycles. The predicted values of the ¹³⁷Cs interception potential almost coincide with the experimental data for the mixtures of sandy soddy-podzolic soil with 10% OMS and are lower than the experimental values by 60% for the mixtures of soil with 10% OMS.
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229314050196