INVESTIGADORES
CURUTCHET Gustavo Andres
artículos
Título:
-Importance of Thiobacillus caldus in the bioleaching of metallic sulfides
Autor/es:
SEMENZA, M. VIERA, M. CURUTCHET, G AND DONATI
Revista:
LATIN AMERICAN APPLIED RESEARCH
Editorial:
PLAPIQUI(UNS-CONICET)
Referencias:
Año: 2002 vol. 32 p. 303 - 306
ISSN:
0327-0793
Resumen:
In the absence of iron, dissolution of zinc sulfide was enhanced by the action of Acidithiobacillus caldus at 40oC. The bioleaching mechanism was similar to that observed for mesophilic species of Acidithiobacillus at 30oC, although the final metal recovery was lower. When iron was added to the cultures, the solubilization of zinc and copper from the sulfides was higher than that in sterile controls. The activity of the cells was through two indirect mechanisms (acid and oxidant mechanisms, for zinc and copper sulfides respectively). A. caldus did not enhance the dissolution of nickel sulfide neither in the absence nor in the presence of iron.
