Biología y Biomedicina >
Centro de Biología Molecular Severo Ochoa (CBM) >
(CBM) Artículos >
Closed Access item Electricity generation by microorganisms in the sediment-water interface of an extreme acidic microcosm
Fernández, Victor M.
de Lacey, Antonio L.
|Keywords:||Microbial fuel cells, Acidophiles, Microcosm, Electricity generation, Río Tinto|
|Publisher:||Hemeroteca Científica Catalana|
|Citation:||International Immunology 14:73-81 (2011)|
|Abstract:||The attachment of microorganisms to electrodes is of great interest for electricity generation in microbial fuel
cells (MFC) or other applications in bioelectrochemical systems (BES). In this work, a microcosm of the acidic ecosystem of
Río Tinto was built and graphite electrodes were introduced at different points. This allowed the study of electricity generation in the sediment/water interface and the involvement of acidophilic microorganisms as biocatalysts of the anodic and
cathodic reactions in a fuel-cell configuration. Current densities and power outputs of up to 3.5 A/m2
and 0.3 W/m2
respectively, were measured at pH 3. Microbial analyses of the electrode surfaces showed that Acidiphilium spp., which uses organic
compounds as electron donors, were the predominant biocatalysts of the anodic reactions, whereas the aerobic iron oxidizers
Acidithiobacillus ferrooxidans and Leptospirillum spp. were detected mainly on the cathode surface. [Int Microbiol 2011;
|Publisher version (URL):||http://www.im.microbios.org/1402/02_073_GarciaMunoz.pdf|
|E-ISSNmetadata.dc.identifier.doi = DOI:||1618-1905|
|Appears in Collections:||(CBM) Artículos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.