Anaerobic bioleaching of jarosites by Shewanella putrefaciens, influence of chelators and biofilm formation

Castro Ruiz, Laura; Blázquez Izquierdo, María Luisa; González González, Felisa; Muñoz Sánchez, Jesús Ángel; Ballester Pérez, Antonio

Anaerobic bioleaching of jarosites by Shewanella putrefaciens, influence of chelators and biofilm formation

Download

Anaerobic_bioleaching.pdf (1.18 MB)

Official URL

https://doi.org/10.1016/j.hydromet.2016.08.002

Publication date

2017

Authors

Castro Ruiz, Laura

Blázquez Izquierdo, María Luisa

González González, Felisa

Muñoz Sánchez, Jesús Ángel

Ballester Pérez, Antonio

Publisher

Elsevier

Citations

Exportar

URI

https://hdl.handle.net/20.500.14352/91245

Citation

Castro, L.; Blázquez, M. L.; González, F.; Muñoz, J. A.; Ballester, A. Anaerobic bioleaching of jarosites by Shewanella putrefaciens, influence of chelators and biofilm formation. Hydrometallurgy 2017, 168, 56-63.

Abstract

Development of clean mining processes is a topic of increasing interest. Biotechnology could be a cost-effective and environmentally friendly alternative to conventional methods. Jarosites can have important economic and environmental impacts because of their content of valuable metals. The anaerobic reductive dissolution of jarosites and gossan mineral by Shewanella putrefaciens strain CN2 and its secondary products have been investigated. In addition, the ability of S. putrefaciens to reduce insoluble Fe(III) in presence of chelators (citrate and EDTA) was examined. The main components in the biofilm extracted from the cultures were determined. In addition, it was observed the formation of extracellular polymeric substances (EPS) during the biological process.