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RESEARCH PRODUCT

Speciation and interactions of plutonium with humic substances and kaolinite in aquifer systems

J. V. KratzStephan BürgerNorbert TrautmannN. L. BanikRazvan Aurel Buda

subject

geographygeography.geographical_feature_categoryChemistryMechanical Engineeringmedia_common.quotation_subjectMetals and AlloysUltrafiltrationchemistry.chemical_elementAquiferSorptionRedoxPlutoniumSpeciationMechanics of MaterialsMaterials ChemistryKaoliniteNuclear chemistrymedia_common

description

Abstract The speciation of plutonium (Pu) in contact with humic substances (HS) and kaolinite has been performed in aquifer systems. Mainly the redox behavior, complexation, and sorption of plutonium are discussed here. The redox behavior of Pu(VI) in contact with HS was studied and it was found that Pu(VI) is reduced to Pu(III) and Pu(IV) within a couple of weeks. The complexation constants (log  β LC ) of Pu(III) and Pu(IV) with HS have been determined by means of the ultrafiltration method. Furthermore, the sorption of Pu(III) and Pu(IV) onto kaolinite has been investigated as a function of pH by batch experiments under aerobic and anaerobic conditions.

yearjournalcountryeditionlanguage
2007-10-01Journal of Alloys and Compounds
https://doi.org/10.1016/j.jallcom.2006.12.048