Shifts in the Microbial Populations of Bioleach Reactors Are Determined by Carbon Sources and Temperature.

ABSTRACT: 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 incre

SUBMITTER: Bulaev A 

PROVIDER: S-EPMC10669018 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature