Shifts in the Microbial Populations of Bioleach Reactors Are Determined by Carbon Sources and Temperature.
Acidithiobacillus
Sulfobacillus
Thermoplasmatales
acidophilic microorganisms
biohydrometallurgy
gold-bearing sulfide concentrates
metagenomic analysis
uncultivated Archaea
Journal
Biology
ISSN: 2079-7737
Titre abrégé: Biology (Basel)
Pays: Switzerland
ID NLM: 101587988
Informations de publication
Date de publication:
09 Nov 2023
09 Nov 2023
Historique:
received:
11
09
2023
revised:
06
11
2023
accepted:
06
11
2023
medline:
24
11
2023
pubmed:
24
11
2023
entrez:
24
11
2023
Statut:
epublish
Résumé
In the present study, the effect of additional carbon sources (carbon dioxide and molasses) on the bio-oxidation of a pyrite-arsenopyrite concentrate at temperatures of 40-50 °C was studied, and novel data regarding the patterns of the bio-oxidation of gold-bearing sulfide concentrates and the composition of the microbial populations performing these processes were obtained. At 40 °C, additional carbon sources did not affect the bio-oxidation efficiency. At the same time, the application of additional carbon dioxide improved the bio-oxidation performance at temperatures of 45 and 50 °C and made it possible to avoid the inhibition of bio-oxidation due to an increase in the temperature. Therefore, the use of additional carbon dioxide may be proposed to prevent the negative effect of an increase in temperature on the bio-oxidation of sulfide concentrates. 16S rRNA gene profiling revealed archaea of the family
Identifiants
pubmed: 37998010
pii: biology12111411
doi: 10.3390/biology12111411
pmc: PMC10669018
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Russian Science Foundation
ID : 21-64-00019
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