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dc.contributor.author
Castro, Camila Andrea
dc.contributor.author
Donati, Edgardo Ruben
dc.date.available
2018-06-19T19:28:33Z
dc.date.issued
2016-06
dc.identifier.citation
Castro, Camila Andrea; Donati, Edgardo Ruben; Effects of different energy sources on cell adhesion and bioleaching of a chalcopyrite concentrate by extremophilic archaeon Acidianus copahuensis; Elsevier Science; Hydrometallurgy (amsterdam); 162; 6-2016; 49-56
dc.identifier.issn
0304-386X
dc.identifier.uri
http://hdl.handle.net/11336/49425
dc.description.abstract
Bioleaching is an alternative technology for recovering metals from mineral ores; thermophilic microorganisms instead of mesophiles can greatly improve metal solubilization, particularly from refractory mineral species. Acidianus copahuensis is a new species of thermophilic archaea, recently isolated in our laboratory. The effect of culture growth history on the attachment of A. copahuensis to a chalcopyrite concentrate was investigated in shake flasks at 65 °C. Cells adapted to growth with chalcopyrite as energy source showed higher attachment to the mineral concentrate. A. copahuensis cells reached 100% of copper extraction in the bioleaching of chalcopyrite concentrate carried out in shake flasks cultures incubated at 65 °C and pH 2.0. This high bioleaching yield was achieved even at that not so low initial pH value probably because this archaeal species is able to form sufficient amounts of ferric iron but keeping low redox potential (Eh) values. This work also describes the effect of the addition of other energy sources on the bioleaching activity. A. copahuensis achieved the best copper extraction without any addition but copper extraction decreased when alternative substrates were added.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Acidianus Copahuensis
dc.subject
Archaeon
dc.subject
Bioleaching
dc.subject
Chalcopyrite
dc.subject
Microbial Attachment
dc.subject
Thermophiles
dc.subject.classification
Bioremediación, Diagnóstico Biotecnológico en Gestión Medioambiental
dc.subject.classification
Biotecnología del Medio Ambiente
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Effects of different energy sources on cell adhesion and bioleaching of a chalcopyrite concentrate by extremophilic archaeon Acidianus copahuensis
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-19T16:54:54Z
dc.journal.volume
162
dc.journal.pagination
49-56
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Castro, Camila Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; Argentina
dc.description.fil
Fil: Donati, Edgardo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Fermentaciones Industriales. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Fermentaciones Industriales; Argentina
dc.journal.title
Hydrometallurgy (amsterdam)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304386X16300615
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.hydromet.2016.02.014
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