Počet záznamů: 1
Redox-driven geochemical partitioning of metal(loid)s in the iron-rich anoxic sediments of a recently flooded lignite mine pit: Lake Medard, NW Czechia
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SYSNO ASEP 0551903 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Redox-driven geochemical partitioning of metal(loid)s in the iron-rich anoxic sediments of a recently flooded lignite mine pit: Lake Medard, NW Czechia Tvůrce(i) Umbría-Salinas, Karelys (BC-A)
Valero Soriano, Astolfo Enrique (BC-A)
Jan, Jiří (BC-A) RID, ORCID
Borovec, Jakub (BC-A) RID
Chrastný, V. (CZ)
Petrash, Daniel A. (BC-A) RID, ORCIDČíslo článku 100009 Zdroj.dok. Journal of Hazardous Materials Advances. - : Elsevier - ISSN 2772-4166
Roč. 3, November (2021)Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova elemental-partitioning ; meromictic lake ; sequential extraction ; pit lake ; reactive iron Vědní obor RIV DA - Hydrologie a limnologie Obor OECD Oceanography CEP GJ19-15096Y GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora BC-A - RVO:60077344 DOI 10.1016/j.hazadv.2021.100009 Anotace We evaluated the geochemical partitioning of Fe, Mn, As, V, and REE in sediments of a recently flooded open-cast lignite mine to interpret their response to recently established anoxia, and minor variations in the redox potential of its ferruginous bottom water column. Results from a sequential extraction scheme targeting reactive Fe mineral phases are combined with an assessment of sediment enrichment factors and REE systematics. Across the sediment pile metal(loid)s are being released from pre-existing authigenic phases as minor shifts in redox potential induce elemental immobilisation through co-precipitation with Fe into mineral phases of diverse reactivity. REE systematics confirms that minor oscillations in the water column’s redox state can trigger swift changes in the speciation of the redox-sensitive elements. The observed metal(loid)s enrichment in the sediments can either be considered an ecological risk, if a management scenario involving solely recreational purposes is conceived, but it can also be seen as a feasible source of critical metals (e.g., REE and V) that are amenable to sustainable, secondary metal recovery endeavours. By anticipating the fate of redox-sensitive metal(loid)s in our study site, we provide parameters useful to delineate management programmes of this and similar post-mining lakes. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S2772416621000097?via%3Dihub
Počet záznamů: 1