Affiliation:
1. Faculty of Mining and Geology, Belgrade
2. Institute for molecular genetics and genetic engineering, Belgrade
Abstract
Bioleaching of samples taken from depths of 10, 15, and 20 meters from old
flotation tailings of the Copper Mine Bor was conducted in shaken flasks
using extremely acidic water of Lake Robuleas lixiviant. Yield of copper
after five weeks of the bioleaching experiment was 68.34?1.21% for 15 m
sample, 72.57?0.57% for 20 m sample and 97.78?5.50% for 10 m sample. The
obtained results were compared to the results of acid leaching of the same
samples and it was concluded that bioleaching was generally more efficient
for the treatment of samples taken from depths of 10 m and 20 m. The content
of pyrite in the 20 m sample, which contained the highest amount of this
mineral, was reduced after bioleaching. Benefits of this approach are:
recovery of substantial amounts of copper, reducing the environmental impact
of flotation tailings and the application of abundant and free water from the
Robule acidic lake as lixiviant. Results of the experiment showed that
bioleaching can be more efficient than acid leaching for copper extraction
from flotation tailings with higher sulfide contents.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
National Library of Serbia
Cited by
18 articles.
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