Influence of temperature on the fixation and penetration of silver during the chalcopyrite leaching using moderate thermophilic microorganisms
Keywords:bioleaching, chalcopyrite, moderate thermophilic microorganisms, superficial fixation of silver
Bioleaching of chalcopyrite using mesophilic microorganisms considerably improves in the presence of silver. However, the studies carried out with moderate thermophilic microorganisms do not show a significant improvement with regard to the use of mesophilic bacteria. The main objective of the present work has been to study the silver fixation on chalcopyrite at 35 and 45 °C and its influence on the microbiological attack. Different observations using SEM, EDS microanalysis and concentration profiles using electron microprobe have been carried out. The study of the different samples showed that silver fixation was more favourable at 35 °C than at 45 °C. In addition, bacterial action improved silver penetration through attack cracks.
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How to Cite
Cancho, L., Blázquez, M. L., Muñoz, J. A., González, F., & Ballester, A. (2004). Influence of temperature on the fixation and penetration of silver during the chalcopyrite leaching using moderate thermophilic microorganisms. Revista De Metalurgia, 40(3), 199–203. https://doi.org/10.3989/revmetalm.2004.v40.i3.264
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