Uranium storage mechanisms in wet-dry redox cycled sediments.

Geologic Sediments Groundwater Iron Oxidation-Reduction Uranium Water Pollutants, Radioactive
Contaminant release-trapping cycling Groundwater quality Sediment-water interaction U mobility Wet-dry redox cycling

Journal

Water research
ISSN: 1879-2448
Titre abrégé: Water Res
Pays: England
ID NLM: 0105072

Informations de publication

Date de publication:
01 04 2019
Historique:
received: 30 05 2018
revised: 30 11 2018
accepted: 01 12 2018
pubmed: 27 1 2019
medline: 26 9 2019
entrez: 26 1 2019
Statut: ppublish

Résumé

Biogeochemical redox processes that govern radionuclide mobility in sediments are highly sensitive to forcing by the water cycle. For example, episodic draining and intrusion of oxidants into reduced zones during dry seasons can create biogeochemical seasonal hotspots of enhanced and changed microbial activity, affect the redox status of minerals, initiate changes in sediment gas and water transport, and stimulate the release of organic carbon, iron, and sulfur by oxidation of solid reduced species to aqueous oxic species. In the Upper Colorado River Basin, water-saturation of organic-enriched sediments locally promotes reducing conditions, denoted 'Naturally Reduced Zones' (NRZs), that accumulate strongly U(IV)

Identifiants

DOI: 10.1016/j.watres.2018.12.040 PMID: 30682569
pubmed: 30682569
pii: S0043-1354(18)31058-3
doi: 10.1016/j.watres.2018.12.040
pii:
doi:

Substances chimiques

Water Pollutants, Radioactive 0
Uranium 4OC371KSTK
Iron E1UOL152H7

Types de publication

Journal Article Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S.

Langues

eng

Sous-ensembles de citation

IM

Pagination

251-263

Informations de copyright

Copyright © 2019 Elsevier Ltd. All rights reserved.

Auteurs

Vincent Noël (V)

Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, United States.

Kristin Boye (K)

Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, United States.

Ravi K Kukkadapu (RK)

Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, United States.

Qingyun Li (Q)

Department of Environmental Earth System Science, Stanford University, Stanford, CA, 94305, United States.

John R Bargar (JR)

Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, United States. Electronic address: bargar@slac.stanford.edu.

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Classifications MeSH

questionsmedicales.fr › Phénomènes biologiques › Phénomènes écologiques et environnementaux › Sédiments géologiques › Uranium storage mechanisms in wet-dry redox...
questionsmedicales.fr › Phénomènes physiques › Phénomènes géologiques › Nappe phréatique › Uranium storage mechanisms in wet-dry redox...
questionsmedicales.fr › Produits chimiques inorganiques › Métaux › Métaux lourds › Fer › Uranium storage mechanisms in wet-dry redox...
questionsmedicales.fr › Métabolisme › Métabolisme énergétique › Oxydoréduction › Uranium storage mechanisms in wet-dry redox...
questionsmedicales.fr › Produits chimiques inorganiques › Métaux › Métaux lourds › Uranium › Uranium storage mechanisms in wet-dry redox...
questionsmedicales.fr › Actions chimiques et utilisations › Actions toxiques › Polluants environnementaux › Polluants de l'eau › Polluants radioactifs de l'eau › Uranium storage mechanisms in wet-dry redox...