Influencia de la temperatura en la fijación y penetración de la plata durante la lixiviación de calcopirita con microorganismos termófilos moderados

L. Cancho; M. L. Blázquez; J. A. Muñoz; F. González; A. Ballester

doi:10.3989/revmetalm.2004.v40.i3.264

Influence of temperature on the fixation and penetration of silver during the chalcopyrite leaching using moderate thermophilic microorganisms

Authors

L. Cancho Departamento de Ciencia de Materiales e Ingeniería Metalúrgica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid
M. L. Blázquez Departamento de Ciencia de Materiales e Ingeniería Metalúrgica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid
J. A. Muñoz Departamento de Ciencia de Materiales e Ingeniería Metalúrgica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid
F. González Departamento de Ciencia de Materiales e Ingeniería Metalúrgica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid
A. Ballester Departamento de Ciencia de Materiales e Ingeniería Metalúrgica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid1

DOI:

https://doi.org/10.3989/revmetalm.2004.v40.i3.264

Keywords:

bioleaching, chalcopyrite, moderate thermophilic microorganisms, superficial fixation of silver

Abstract

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.

Downloads

Download data is not yet available.

Downloads

Published

2004-06-30

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

Download Citation

Issue

Vol. 40 No. 3 (2004)

Section

Articles

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.

All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read here the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.

Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.