The contribution of Acidiphilium cryptum to the dissolution of low-grade manganese ores

2018 ◽  
Vol 175 ◽  
pp. 312-318 ◽  
Author(s):  
Ernesto González ◽  
José Manuel Rodríguez ◽  
Jesús Ángel Muñoz ◽  
María Luisa Blázquez ◽  
Antonio Ballester ◽  
...  
Keyword(s):  
Low Grade ◽  
Manganese Ores ◽  
Acidiphilium Cryptum

Production of manganese (II) sulphate from low-grade manganese ores

2007 ◽  
Vol 14 (3) ◽  
pp. 105-108
Author(s):  
R. I. Razouk ◽  
S. K. Tobia ◽  
M. A. Messiha
Keyword(s):  
Low Grade ◽  
Manganese Ores

Design of a hydrometallurgical complex for processing of complex low-grade manganese ores

2018 ◽  
pp. 4-10
Author(s):  
D. Yu. Zhukov ◽  
◽  
Yu. M. Averina ◽  
V. V. Menshikov ◽  
◽  
...  
Keyword(s):  
Low Grade ◽  
Manganese Ores

Reductive Dissolution of Iron Oxides and Manganese Bioleaching by Acidiphilium cryptum JF-5

2015 ◽  
Vol 1130 ◽  
pp. 347-350 ◽  
Author(s):  
Ernesto González ◽  
F. González ◽  
J.A. Muñoz ◽  
M. Luisa Blázquez ◽  
Antonio Ballester
Keyword(s):  
Iron Oxides ◽  
Reductive Dissolution ◽  
Low Grade ◽  
Manganese Ore ◽  
Iron Reducing Bacteria ◽  
Acidiphilium Cryptum ◽  
The Media ◽  
Acidic Environments ◽  
Reducing Bacteria ◽  
Positive Effect

In the development of new processes to use the potential of iron reducing bacteria,Acidiphilium cryptum, the main bacteria involved in the reduction of Fe (III) compounds in acidic environments, could play an important biohydrometallurgical role. Thus, the bioleaching of hematite, goethite and a low-grade manganese ore was assayed, in vials and columns, using three different media; two of which included a ligand, oxalate, or a redox mediator, thionine.Although the presence ofA. cryptumwas essential for promoting the dissolution of both iron oxides and the bioleaching of manganese ore, the addition of oxalate to the media tripled and quadrupled the microbial dissolution of hematite and goethite, respectively. Oxalate also had a positive effect in assays performed in columns, however, the addition of thionine to the medium allowed to reach significant hematite dissolution.

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