Leaching of copper ore of the Udokanskoe deposit at low temperatures by an association of acidophilic chemolithotrophic microorganisms

Bioleaching of Au-Containing Ore Slates and Pyrite Wastes

“…At present the methods of bioleaching of gold from ores using basically known acidophilic bacteria, which were extracted from different sources, or the use of microbial consortia of acidophilic bacteria are widely applied [13][14][15][16]32]. Before using such bacteria there must be time for their adaptation to new conditions.…”

“…During the last 65 years, different bioleaching technologies have been developed and/or enhanced to extract Co, Ni, Cu, and Zn [8,9] as well as Au [10,11]. They include some new constructions (bioreactors), tested under laboratory and pilot conditions, but are not extensively used in industry [12] during the application of Acidithiobacillus ferrooxidans [13,14], Chromobacterium violaceum [15], Sulfobacillus thermosulfidooxidans, and A. caldus [16]. It is evident that extraction of gold from refractory lean raw materials by means of bioleaching will minimize the harm caused to the environment and make cheaper the processing of sulfide ores and technogenic wastes.…”