About: Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia

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About: Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Kinetic batch leaching of the flotation wastes from Berg Aukas mining district (northern Namibia) in 500 μM solutions of citric, oxalic and acetic acid was performed to simulate the release of trace metals in the rhizosphere-like environment. The obtained data demonstrate that citric acid may significantly contribute to mineral waste alteration accompanied by contaminant mobilization; the maximum dissolution rates corresponded to 2% (Cd), 0.8% (Pb) and 0.3% (Zn) of their total amounts. In contrast, the role of oxalic and acetic acid in the complex process of contaminant leaching was usually negligible and comparable with water. The precipitation of newly formed Fe (hydr)oxides followed by the adsorption of Pb, Cd and eventually Zn from the model solutions, seems to be the key mechanism which led to the metals´ stabilization, as predicted by speciation modeling. Kinetic batch leaching of the flotation wastes from Berg Aukas mining district (northern Namibia) in 500 μM solutions of citric, oxalic and acetic acid was performed to simulate the release of trace metals in the rhizosphere-like environment. The obtained data demonstrate that citric acid may significantly contribute to mineral waste alteration accompanied by contaminant mobilization; the maximum dissolution rates corresponded to 2% (Cd), 0.8% (Pb) and 0.3% (Zn) of their total amounts. In contrast, the role of oxalic and acetic acid in the complex process of contaminant leaching was usually negligible and comparable with water. The precipitation of newly formed Fe (hydr)oxides followed by the adsorption of Pb, Cd and eventually Zn from the model solutions, seems to be the key mechanism which led to the metals´ stabilization, as predicted by speciation modeling. (en)
Title	Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia (en)
skos:prefLabel	Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia (en)
skos:notation	RIV/00025798:_____/14:00000265!RIV15-GA0-00025798
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP210/12/1413)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Kříbek, Bohdan
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká geologická služba
http://linked.open...dnocenehoVysledku	14786
http://linked.open...ai/riv/idVysledku	RIV/00025798:_____/14:00000265
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Metals, Low-Molecular-Weight Organic Acids, Flotation Waste, Rhizosphere (en)
http://linked.open.../riv/klicoveSlovo	Flotation Waste Low-Molecular-Weight Organic Acids Rhizosphere Metals
http://linked.open...ontrolniKodProRIV	[3B85F67EBA46]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Prague
http://linked.open...i/riv/nazevZdroje	Addressing environmental and health impacts of active and abandoned mines in Sub-Saharan Africa. Proceedings of the Closing Workshop of the IGCP/SIDA Projects 594 and 606,Prague, Czech Republic, May 26—28, 2014
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Impact of ore mining and processing on the environment in Namibia: Modelling pollutants migration in soils, plants and groundwaters
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Kříbek, Bohdan Mihaljevič, Martin Penížek, Vít Šráček, Ondřej Drábek, Ondřej Ettler, Vojtěch Tejnecký, Václav Vaněk, Aleš Mapani, Benjamin Skipalová, Klára
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2014-05-26 (xsd:date)
number of pages	2 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Czech geological survey
https://schema.org/isbn	978-80-7075-858-8

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