INVESTIGADORES
VIERA Marisa Rosana
artículos
Título:
The role of Thiobacillus Caldus in the bioleaching of metal sulphides.
Autor/es:
SEMENZA, M.; VIERA, M.; CURUTCHET, G., DONATI E
Revista:
LATIN AMERICAN APPLIED RESEARCH
Editorial:
PLAPIQUI(UNS-CONICET)
Referencias:
Lugar: Bahia Blanca; 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 40°C. The bioleaching mechanism as similar to that observed for her than species of Acidithiobacillus at 30°C, 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 sissolution of nickel sulfide neither in the absence nor in the presence of iron.
