The pH-static leaching behaviour of metallurgical wastes from the Tsumeb Copper Smelter (Namibia)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F14%3A00000077" target="_blank" >RIV/00025798:_____/14:00000077 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The pH-static leaching behaviour of metallurgical wastes from the Tsumeb Copper Smelter (Namibia)
Original language description
In this study, bag house dust and four different slags from the Tsumeb Copper Smelter (Namibia) were studied. The pH-static leaching tests (pH range 3-12) were used and contaminant leachabilities at natural pH were compared with EU criteria for non-hazardous and hazardous wastes. Bag house dust exhibited high leaching of As (up to 314 g/kg) and more than 2000x exceeded the limit value for hazardous waste. In contrast, the leaching of contaminants from slags was more pH-dependent, with highest Cu and Pbrelease under acidic conditions (up to 1780 and 752 mg/kg, respectively). However, metal leaching at natural pH was very low, far below the limits for non-hazardous wastes. Arsenic exhibited V-shaped leaching patterns with minimum at pH 6 for all the slag samples. Only in the case of the ausmelt slag the leached As exceeded the limit for hazardous waste. Our data clearly indicate extremely high As leaching from the bag house dust. We strongly support safety measures currently adopted in
Czech name
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Czech description
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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

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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
5
Pages from-to
57-61
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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