Bioreduction Behavior of U(VI) Sorbed to Sediments
作者： James D.C. Begg , Ian T. Burke , Jonathan R. Lloyd , Chris Boothman , Samual Shaw
DOI: 10.1080/01490451003761137
关键词: Groundwater 、 Uranium 、 Sediment 、 Speciation 、 Chemistry 、 Ethylenediaminetetraacetic acid 、 Bicarbonate 、 Microcosm 、 Environmental chemistry 、 Adsorption
摘要: It is well known that microbially mediated reduction can result in the removal of U(VI)(aq) from solution by forming poorly soluble U(IV) oxides; however, fate U(VI) already associated with mineral surfaces less clear. Here we describe results both oxic adsorption and anaerobic microcosm experiments to examine sorbed during bioreduction. The contained sediment representative nuclear facility at Dounreay, UK. In experiments, uptake was rapid complete artificial groundwater where amended 0.2 mmol l−1 ethylenediaminetetraacetic acid (EDTA) a complexing ligand used fuel cycle operations. By contrast, incomplete groundwaters 10 bicarbonate. Analysis sediments using X-ray spectroscopy showed these samples, U present as U(VI). After incubation labelled for 12...
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