New Approach of Metals Removal from Acid Mine Drainage

The possibility of metal removal from the real acid mine drainage (AMD) in the area of copper ore mines in the southeast Serbia, was investigated through a combination of neutralization and adsorption methods. This approach of metal removal from AMD includes a two-step neutralization method in the f...

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Bibliographic Details
Published in:Applied sciences 2020-09, Vol.10 (17), p.5925
Main Authors: Markovic, Radmila, Bessho, Masahiko, Masuda, Nobuyuki, Stevanovic, Zoran, Bozic, Dragana, Apostolovski Trujic, Tatjana, Gardic, Vojka
Format: Article
Language:English
Subjects:
Acid mine drainage
Adsorption
Chitosan
Copper
Copper ores
Effluents
Environmental protection
Heavy metals
Industrial plants
Laboratory tests
Lead
Manganese
Metals
metals removal
Methods
Mine drainage
Minerals
Mines
Mining industry
Neutralization
Precipitation
semi industrial plant
Sludge
Sustainable development
Water quality
Water treatment
Zinc
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Summary:The possibility of metal removal from the real acid mine drainage (AMD) in the area of copper ore mines in the southeast Serbia, was investigated through a combination of neutralization and adsorption methods. This approach of metal removal from AMD includes a two-step neutralization method in the first phase, aiming to separate metals as sludge. The results of laboratory test revealed that more than 99 mass % of Fe is removed up to pH 4 and more than 99 mass % of Cu up to pH 7. Based on the results obtained in laboratory conditions, a test on a semi industrial plant was carried out. The two-step neutralization separately removed Fe and Cu at pH 4 and 7, respectively. Especially, the obtained sludge at pH 7 included 1.24 mass % of Cu, much higher than usual Cu ore. Chitosan was applied for dissolved Mn removal from treated AMD. After 24 h incubation, 70 mass % of Mn is removed from the treated AMD at pH 7.4. Mn concentration was reduced from approx. 35 mg L−1 to 5 mg L−1. These results have indicated that a combination of neutralization and adsorption methods could be used effectively for metal removal from real AMD.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10175925