About: Kinetics of plutonium and americium sorption to natural clay

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Kinetics of Pu(IV) and Am(III) sorption from natural groundwater to three types of clays were studied at trace concentrations of the elements. Higher Kd values were determined for sorption of Pu than of Am, and no clear dependence of the Kd values and the kinetic coefficients on the composition of the clays can be deduced. Kinetic data evaluated by models for six different control processes indicated a sorption mechanism controlled by Pu or Am diffusion in the inert layer on the surface of the clays. Apart from the kinetics of the elements sorption, time-dependent changes in their bonding nature were also studied using a sequential extraction. It was found that Pu(IV) was predominantly associated with amorphous and crystalline Fe oxides as well as natural organic matter sites on the clays, whereas in the case of Am(III) the exchangeable and carbonate sites played the principal role. Kinetics of Pu(IV) and Am(III) sorption from natural groundwater to three types of clays were studied at trace concentrations of the elements. Higher Kd values were determined for sorption of Pu than of Am, and no clear dependence of the Kd values and the kinetic coefficients on the composition of the clays can be deduced. Kinetic data evaluated by models for six different control processes indicated a sorption mechanism controlled by Pu or Am diffusion in the inert layer on the surface of the clays. Apart from the kinetics of the elements sorption, time-dependent changes in their bonding nature were also studied using a sequential extraction. It was found that Pu(IV) was predominantly associated with amorphous and crystalline Fe oxides as well as natural organic matter sites on the clays, whereas in the case of Am(III) the exchangeable and carbonate sites played the principal role. (en)
Title	Kinetics of plutonium and americium sorption to natural clay Kinetics of plutonium and americium sorption to natural clay (en)
skos:prefLabel	Kinetics of plutonium and americium sorption to natural clay Kinetics of plutonium and americium sorption to natural clay (en)
skos:notation	RIV/68407700:21340/12:00202735!RIV13-MSM-21340___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6840770020)
http://linked.open...iv/cisloPeriodika	June
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Štamberg, Karel Beneš, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta jaderná a fyzikálně inženýrská
http://linked.open...dnocenehoVysledku	144663
http://linked.open...ai/riv/idVysledku	RIV/68407700:21340/12:00202735
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Plutonium; Americium; Sorption, Clay; Kinetics (en)
http://linked.open.../riv/klicoveSlovo	Clay Sorption Americium Plutonium Kinetics
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[9510AB734152]
http://linked.open...i/riv/nazevZdroje	Journal of Environmental Radioactivity
http://linked.open...in/vavai/riv/obor	DL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	108
http://linked.open...iv/tvurceVysledku	Beneš, Petr Štamberg, Karel Lujaniené, G. Ščiglo, T.
http://linked.open...ain/vavai/riv/wos	000303225200008
http://linked.open...n/vavai/riv/zamer	BEZPEČNOST JADERNÝCH ZAŘÍZENÍ
issn	0265-931X
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.jenvrad.2011.07.012
http://localhost/t...ganizacniJednotka	21340

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