{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Alexandratos VG"],"funding":["Seventh Framework Programme"],"pagination":["2140-2150"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC5343554"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["51(4)"],"pubmed_abstract":["The impact on U(VI) adsorbed to lepidocrocite (γ-FeOOH) and hematite (α-Fe<sub>2</sub>O<sub>3</sub>) was assessed when exposed to aqueous sulfide (S(-II)<sub>aq</sub>) at pH 8.0. With both minerals, competition between S(-II) and U(VI) for surface sites caused instantaneous release of adsorbed U(VI). Compared to lepidocrocite, consumption of S(-II)<sub>aq</sub> proceeded slower with hematite, but yielded maximum dissolved U concentrations that were more than 10 times higher, representing about one-third of the initially adsorbed U. Prolonged presence of S(-II)<sub>aq</sub> in experiments with hematite in combination with a larger release of adsorbed U(VI), enhanced the reduction of U(VI): after 24 h of reaction about 60-70% of U was in the form of U(IV), much higher than the 25% detected i"],"journal":["Environmental science & technology"],"pubmed_title":["Fate of Adsorbed U(VI) during Sulfidization of Lepidocrocite and Hematite."],"pmcid":["PMC5343554"],"funding_grant_id":["212287"],"pubmed_authors":["Alexandratos VG","Van Cappellen P","Behrends T"],"additional_accession":[]},"is_claimable":false,"name":"Fate of Adsorbed U(VI) during Sulfidization of Lepidocrocite and Hematite.","description":"The impact on U(VI) adsorbed to lepidocrocite (γ-FeOOH) and hematite (α-Fe<sub>2</sub>O<sub>3</sub>) was assessed when exposed to aqueous sulfide (S(-II)<sub>aq</sub>) at pH 8.0. With both minerals, competition between S(-II) and U(VI) for surface sites caused instantaneous release of adsorbed U(VI). Compared to lepidocrocite, consumption of S(-II)<sub>aq</sub> proceeded slower with hematite, but yielded maximum dissolved U concentrations that were more than 10 times higher, representing about one-third of the initially adsorbed U. Prolonged presence of S(-II)<sub>aq</sub> in experiments with hematite in combination with a larger release of adsorbed U(VI), enhanced the reduction of U(VI): after 24 h of reaction about 60-70% of U was in the form of U(IV), much higher than the 25% detected i","dates":{"release":"2017-01-01T00:00:00Z","publication":"2017 Feb","modification":"2025-04-04T14:32:52.806Z","creation":"2019-03-27T02:38:16Z"},"accession":"S-EPMC5343554","cross_references":{"pubmed":["28121137"],"doi":["10.1021/acs.est.6b05453"]}}