{"entity": "publication", "iuid": "e7370ad15707426fad587337016b4455", "timestamp": "2026-08-12T05:53:52.017Z", "links": {"self": {"href": "https://publications.scilifelab.se/publication/e7370ad15707426fad587337016b4455.json"}, "display": {"href": "https://publications.scilifelab.se/publication/e7370ad15707426fad587337016b4455"}}, "title": "Uranium Repartitioning during Microbial Driven Reductive Transformation of U(VI)-Sorbed Schwertmannite and Jarosite.", "authors": [{"family": "Yu", "given": "Changxun", "initials": "C", "orcid": "0000-0002-0635-3718", "researcher": {"href": "https://publications.scilifelab.se/researcher/1fb153d0c9374644916130ec411ed5ae.json"}}, {"family": "Johnson", "given": "Anders", "initials": "A", "orcid": "0000-0003-2943-5158", "researcher": {"href": "https://publications.scilifelab.se/researcher/8b87d8091975457c9bc0f362c6a874c5.json"}}, {"family": "Karlsson", "given": "Andreas", "initials": "A"}, {"family": "Chernikov", "given": "Roman", "initials": "R"}, {"family": "Sj\u00f6berg", "given": "Viktor", "initials": "V"}, {"family": "Song", "given": "Zhaoliang", "initials": "Z", "orcid": "0000-0002-2219-5852", "researcher": {"href": "https://publications.scilifelab.se/researcher/98a4287cf3544cd48a03041db63b688e.json"}}, {"family": "Dopson", "given": "Mark", "initials": "M"}, {"family": "\u00c5str\u00f6m", "given": "Mats E", "initials": "ME"}], "type": "journal article", "published": "2024-10-15", "journal": {"title": "Environ. Sci. Technol.", "issn": "1520-5851", "volume": "58", "issue": "41", "pages": "18324-18334", "issn-l": "0013-936X"}, "abstract": "This study exposes U(VI)-sorbed schwertmannite and jarosite to biotic reductive incubations under field-relevant conditions and examines the changes in aqueous and solid-phase speciation of U, Fe, and S as well as associated microbial communities over 180 days. The chemical, X-ray absorption spectroscopy, X-ray diffraction, and microscopic data demonstrated that the U(VI)-sorbed schwertmannite underwent a rapid reductive dissolution and solid-phase transformation to goethite, during which the surface-sorbed U(VI) was partly reduced and mostly repartitioned to monomeric U(VI)/U(IV) complexes by carboxyl and phosphoryl ligands on biomass or organic substances. Furthermore, the microbial data suggest that these processes were likely driven by the consecutive developments of fermentative and sulfate- and iron- reducing microbial communities. In contrast, the U(VI)-sorbed jarosite only stimulated the growth of some fermentative communities and underwent very limited reductive dissolution and thus, remaining in its initial state with no detectable mineralogical transformation and solid-phase U reduction/repartitioning. Accordingly, these two biotic incubations did not induce increased risk of U reliberation to the aqueous phase. These findings have important implications for understanding the interactions of schwertmannite/jarosite with microbial communities and colinked behavior and fate of U following the establishment of reducing conditions in various acidic and U-rich settings.", "doi": "10.1021/acs.est.4c03645", "pmid": "39361056", "labels": {"Bioinformatics Support for Computational Resources": "Service"}, "xrefs": [{"db": "pmc", "key": "PMC11483811"}], "notes": [], "created": "2025-02-28T14:13:50.568Z", "modified": "2025-02-28T14:13:50.786Z"}