Please use this identifier to cite or link to this item: http://dspace.utpl.edu.ec/handle/123456789/19155
Title: Study of native micro-organisms in bioleaching processes of refractory auriferous minerals and its use as a tool for bio-regeneration
Authors: Sanmartin Gutierrez, V.
Keywords: engineering controlled terms: bacteriology
biochemistry
biodegradation
biodiversity
bioleaching
cyanides
fungi
leaching
microorganisms
mineralogy
minerals
Publisher: Australasian Institute of Mining and Metallurgy Publication Series
Abstract: The broad biodiversity of our country is manifested through several different biological forms. From the villages of Portovelo and San Gerardo in the southern part of Ecuador, some samples of water and rocks were taken in order to identify the native micro-organisms which take part in the natural processes of leaching of sulfurous minerals. The presence of Spp Thiobacillus ferrooxidans was determined together with a fungi sample which has not yet been characterised by the current workers. These have been isolated, grown, experimented and conserved in appropriate cryogenic environments. The present research intends to study the individual and group adaptation of the bacteria and the fungi upon suitable systems of agitation and ventilation, in combination with several different concentrations of refractory auriferous samples. These refractory samples were derived from old mine workings and the experiments were performed to test the effectiveness of the. isolated species in bioleaching as prc-trcatments upon the cyaniding processes. The capability of these bacteria to develop in environments with high concentrations of cyanide, has also been studied, to investigate the possible use of bacteria in the biodegradation of cyanide. The presence of Thiobacillus ferrooxidans in acid conditions has already been tested in advance, however, the presence of fungi species in these conditions are studied to prove their efficiency as another alternative for the bioleaching of refractory auriferous minerals.
URI: http://dspace.utpl.edu.ec/handle/123456789/19155
Appears in Collections:Artículos de revistas Científicas

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.