Evaluating acidithiobacillus ferrooxidans bacterial oxidation of sulphur compounds using ftir and x-ray diffraction assays

A native bacterial strain capable of oxidising ferrous iron and sulphur compounds was isolated from effluent and material from the La Maruja gold mine in the municipality of Marmato (Caldas); this was biochemically identified as being Acidithiobacillus ferrooxidans. This strain's ability to oxi...

Full description

Autores:
Muñoz, Alexandra
Márquez, Marco A.
Montoya, Olga I.
Ruiz, Orlando
Lemehsko, Victor
Tipo de recurso:
Article of journal
Fecha de publicación:
2003
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/22187
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/22187
http://bdigital.unal.edu.co/13221/
Palabra clave:
biooxidación
biolixiviación
A. ferrooxidans
sulfuros metálicos
bio-oxidation
bio-leaching
A. ferrooxidans
sulphides
Rights
closedAccess
License
Atribución-NoComercial 4.0 Internacional
Description
Summary:A native bacterial strain capable of oxidising ferrous iron and sulphur compounds was isolated from effluent and material from the La Maruja gold mine in the municipality of Marmato (Caldas); this was biochemically identified as being Acidithiobacillus ferrooxidans. This strain's ability to oxidise metallic sulphide concentrates having two differ-ent pulp proportions and two particle sizes was evaluated. Sulphide bio-oxidation was observed after 15 days showing this strain's catalytic action on the mineral break-down process. Key words: bio-oxidation; bio-leaching; A. ferrooxidans; sulphides