Acidophilic Microorganisms from Geothermal Copahue Volcano System. Assessment of Biotechnological Applications

P. Chiacchiarini; L. Lavalle; Alejandra Giaveno; Edgardo R. Donati

doi:10.4028/www.scientific.net/AMR.71-73.87

Paper Titles

Population Dynamics of a Low-Grade Chalcopyrite Bioleaching Column
p.71

Pyrite Oxidation by Halotolerant, Thermotolerant Bacteria
p.75

Adaptation and Evolution of Microbial Consortia in a Stirred Tank Reactor Bioleaching System: Indigenous Population versus a Defined Consortium
p.79

Assessment of Microbial Adhesion in Mixed Cultures to Sulfide Minerals Using CARD-FISH Techniques
p.83

Acidophilic Microorganisms from Geothermal Copahue Volcano System. Assessment of Biotechnological Applications
p.87

Molecular and Morphological Characterization of Cultures from the Extreme Environmental Area of Copahue Volcano-Argentina
p.93

Evidence for Iron- and Sulfur-Oxidizing Bacteria and Archaea in a Currently Active Lignite Mining Area of Lusatia (Eastern Germany)
p.97

Microbial Diversity by Substrate Utilization Profiles of Lignite Mines Samples of Gujarat, India
p.101

Long Term Studies on the Impact of Thionic Bacteria on the Global Pollution of Waters with Toxic Ions
p.105

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Acidophilic Microorganisms from Geothermal Copahue Volcano System. Assessment of Biotechnological Applications

Abstract:

This work presents an overview of the physicochemical and biological studies carried out along Rio Agrio and in different hot springs belonging to the geothermal Copahue volcano system, in Neuquén Argentina. This is an extreme environment characterized by wide ranges of temperature, pH (<1 to 8) and heavy metals concentration. In these extreme conditions chemolitho-autotrophic bacteria, archaea, heterotrophic bacteria, yeasts and filamentous fungi were detected. Members of Leptospirillum ferrooxidans, Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Acidianus spp., among others, were successfully cultivated and physiological properties of different isolates were determined. Additionally, bioleaching and biooxidation of regional ores were carried out using mixed native cultures.