Sticky bacteria: Combined effect of galactose and high ferric iron concentration on extracellular polymeric substances production and the attachment of Acidithiobacillus …

Abstract:

Biooxidation and bioleaching processes allow to obtain the metals from low-grade sulfide ores (Srichandan et al., 2019) and have been widely accepted in the mining industry when conventional treatments are not economically feasible (Kaksonen et al., 2020). Biooxidation and bioleaching are carried out by acidophilic chemolithoautotrophic microorganisms capable of oxidizing reduced sulfur and/or iron compounds to obtain energy (Sajjad et al., 2019). Acidithiobacillus ferrooxidans (A. ferrooxidans) is the most characterized acidophilic bacterium due to its potential to oxidize iron and sulfur, with studies focused on specific genomic and metabolic features (Hödar et al., 2012; Campodonico et al., 2016; Latorre et al., 2016). During biooxidation and bioleaching, microorganisms oxidize Fe2+ to Fe3+. The last one acts as an oxidizing agent, chemically oxidizing metal sulfides, reducing them to Fe2+ during mineral …

Año de publicación:

2022

Keywords:

Fuente:

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