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4192985 
Journal Article 
Preferential use of an anode as an electron acceptor by an acidophilic bacterium in the presence of oxygen 
Malki, M; De Lacey, AL; Rodríguez, N; Amils, R; Fernandez, VM 
2008 
Yes 
Applied and Environmental Microbiology
ISSN: 0099-2240
EISSN: 1098-5336 
74 
14 
4472-4476 
English 
18487393 
WOS:000257733600027 
Several anaerobic metal-reducing bacteria have been shown to be able to donate electrons directly to an electrode. This property is of great interest for microbial fuel cell development. To date, microbial fuel cell design requires avoiding O(2) diffusion from the cathodic compartment to the sensitive anodic compartment. Here, we show that Acidiphilium sp. strain 3.2 Sup 5 cells that were isolated from an extreme acidic environment are able to colonize graphite felt electrodes. These bacterial electrodes were able to produce high-density electrocatalytic currents, up to 3 A/m(2) at a poised potential of +0.15 V (compared to the value for the reference standard calomel electrode) in the absence of redox mediators, by oxidizing glucose even at saturating air concentrations and very low pHs. 
• Inorganic Mercury Salts (2)
     Mercurous Chloride
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