Format

Send to

Choose Destination
Bioresour Technol. 2014 Apr;157:284-92. doi: 10.1016/j.biortech.2014.01.112. Epub 2014 Feb 4.

Characterization of microbial current production as a function of microbe-electrode-interaction.

Author information

1
Institute for Applied Biosciences, Department of Applied Biology, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany. Electronic address: kerstin.dolch@kit.edu.
2
Laboratory for MEMS Applications, IMTEK - Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany. Electronic address: joana.danzer@imtek.uni-freiburg.de.
3
Institute for Applied Biosciences, Department of Applied Biology, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany. Electronic address: Kabbeck@gmx.de.
4
Laboratory for MEMS Applications, IMTEK - Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany. Electronic address: bbierer@web.de.
5
Laboratory for MEMS Applications, IMTEK - Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany. Electronic address: johannes.erben@imtek.uni-freiburg.de.
6
Institute for Applied Biosciences, Department of Applied Biology, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany. Electronic address: andreas.foerster@kit.edu.
7
Botanical Institute, Molecular Cell Biology, Karlsruhe Institute of Technology, Kaiserstrasse 2, 76131 Karlsruhe, Germany. Electronic address: jan.maisch@kit.edu.
8
Botanical Institute, Molecular Cell Biology, Karlsruhe Institute of Technology, Kaiserstrasse 2, 76131 Karlsruhe, Germany. Electronic address: peter.nick@kit.edu.
9
Laboratory for MEMS Applications, IMTEK - Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany. Electronic address: kerzenma@imtek.uni-freiburg.de.
10
Institute for Applied Biosciences, Department of Applied Biology, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany. Electronic address: johannes.gescher@kit.edu.

Abstract

Microbe-electrode-interactions are keys for microbial fuel cell technology. Nevertheless, standard measurement routines to analyze the interplay of microbial physiology and material characteristics have not been introduced yet. In this study, graphite anodes with varying surface properties were evaluated using pure cultures of Shewanella oneidensis and Geobacter sulfurreducens, as well as defined and undefined mixed cultures. The evaluation routine consisted of a galvanostatic period, a current sweep and an evaluation of population density. The results show that surface area correlates only to a certain extent with population density and anode performance. Furthermore, the study highlights a strain-specific microbe-electrode-interaction, which is affected by the introduction of another microorganism. Moreover, evidence is provided for the possibility of translating results from pure culture to undefined mixed species experiments. This is the first study on microbe-electrode-interaction that systematically integrates and compares electrochemical and biological data.

KEYWORDS:

Electrode material; Geobacter sulfurreducens; Microbial fuel cell; Shewanella oneidensis; qPCR

PMID:
24566287
DOI:
10.1016/j.biortech.2014.01.112
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center