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Effect of periodic wetting and drying on selective sorption of super(137)Cs 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 super(137)Cs by 2.5-5 ti...

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Published in:Eurasian soil science 2014-05, Vol.47 (5), p.432-440
Main Authors: Popov, V E, Maslova, K M, Stepina, IA
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Language:English
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Stepina, IA
description 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 super(137)Cs by 2.5-5 times. The addition of 5% OMS increases the effect of periodic W-D cycles on the selective sorption of super(137)Cs compared to the addition of 10% OMS. The relationship between the super(137)Cs 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 super(137)Cs 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.
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title Effect of periodic wetting and drying on selective sorption of super(137)Cs by mixtures of soil and organomineral sorbent
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