Insights into the Active Carbon Fixation Pathways of a Microbial Community in a Chalcopyrite Bioleaching Column

Sabrina Marín; Mauricio Acosta; Pedro Galleguillos; Clement Chibwana; Hannes Strauss; Cecilia Demergasso

doi:10.4028/www.scientific.net/AMR.1130.367

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Bioprocess for Leaching of Copper Concentrate
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Bioleaching of Orpiment (As₂S₃) in Absence of Fe³⁺
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Insights into the Active Carbon Fixation Pathways of a Microbial Community in a Chalcopyrite Bioleaching Column
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Study on the Gold Recovery of Double Refractory Gold Ore Concentrate by Biological Oxidation Pretreatment
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Spectroscopic and Microscopic Investigation for Biohydrometallurgy
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1130Insights into the Active Carbon Fixation Pathways...

Insights into the Active Carbon Fixation Pathways of a Microbial Community in a Chalcopyrite Bioleaching Column

Abstract:

Recently, a preliminary model has been proposed for relating the microbial succession of bioleaching heaps with the activity of different CO₂ fixation pathways. In order to confirm this hypothesis and to understand the impact of the carbon metabolism in the metallurgical performance, the expression levels of carbon fixation pathways were investigated in a chalcopyrite bioleaching column test by transcriptomic analysis. The community structure, the physicochemical conditions and the metallurgical parameters were also analyzed. Gene expression profiles obtained by microarrays confirmed the temporal distribution of microorganisms as a function of the temperature and the different pathways for CO₂ fixation. These results revealed the impact of the different CO₂ fixation pathways in the composition of the microbial assemblage as the bioleaching proceeds.

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Periodical:

Advanced Materials Research (Volume 1130)

Pages:

367-370

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1130.367

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Online since:

November 2015

Authors:

Sabrina Marín, Mauricio Acosta, Pedro Galleguillos, Clement Chibwana, Hannes Strauss, Cecilia Demergasso*

Keywords:

Bioleaching Community, CO₂ Fixation, Microarrays, Microbial Succession

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References

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