Validation of Genetic Markers Associated to Oxygen Availability in Low-Grade Copper Bioleaching Systems: An Industrial Application.

ABSTRACT: Forced aeration is one of the major energy consumption factors of the bioleaching process of run-of-mine ore. The effect of aeration in the microbial community has scarcely been studied at industrial level. Leptospirillum ferriphilum is one of the most representative species of the Fe³⁺ producing population in this kind of systems. We analyzed the effect of oxygen availability on L. ferriphilum by growth activity and transcriptional dynamics of its two terminal oxidases (cbb3 and bd complexes) under different experimental test: culture reactor, bioleaching column, and industrial heap tests. Relatively low O₂ availability triggered important changes in the microbial community composition, cell growth, microbial activity and cydAB genes transcriptio

SUBMITTER: Cortes M 

PROVIDER: S-EPMC6695575 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature