Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F14%3A00000265" target="_blank" >RIV/00025798:_____/14:00000265 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Environmental stability of the processing waste from Berg Aukas, a sulfide mining district of Namibia
Original language description
Kinetic batch leaching of the flotation wastes from Berg Aukas mining district (northern Namibia) in 500 ?M 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, therole 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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
DD - Geochemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP210%2F12%2F1413" target="_blank" >GAP210/12/1413: Impact of ore mining and processing on the environment in Namibia: Modelling pollutants migration in soils, plants and groundwaters</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
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
ISBN
978-80-7075-858-8
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
193-195
Publisher name
Czech geological survey
Place of publication
Prague
Event location
Praha
Event date
May 26, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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