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1.
FIG. 7.

FIG. 7. From: Electricity Production by Geobacter sulfurreducens Attached to Electrodes.

Response of the graphite electrode potential to an attached population of G. sulfurreducens metabolizing acetate as the electron donor, after electrode control (poising by potentiostat) was switched off.

Daniel R. Bond, et al. Appl Environ Microbiol. 2003 March;69(3):1548-1555.
2.
FIG. 5.

FIG. 5. From: Electricity Production by Geobacter sulfurreducens Attached to Electrodes.

SEM image of an electrode surface following growth of G. sulfurreducens with acetate as an electron donor (2 mM) under poised-potential conditions. Over 75% of viewed fields at this magnification had no exposed electrode; however, this image was chosen to provide an example of electrode surface characteristics and show individual bacterial attachment.

Daniel R. Bond, et al. Appl Environ Microbiol. 2003 March;69(3):1548-1555.
3.
FIG. 6.

FIG. 6. From: Electricity Production by Geobacter sulfurreducens Attached to Electrodes.

Hydrogen-dependent current production by attached populations of G. sulfurreducens in two different chambers (open and closed symbols) containing graphite electrodes poised at +200 mV versus an Ag/AgCl reference electrode. Hydrogen-carbon dioxide (80:20) and nitrogen-carbon dioxide (80:20) gas mixtures were bubbled directly into the electrode chambers where indicated.

Daniel R. Bond, et al. Appl Environ Microbiol. 2003 March;69(3):1548-1555.
4.
FIG. 2.

FIG. 2. From: Electricity Production by Geobacter sulfurreducens Attached to Electrodes.

Current-voltage and current-power (watts = amperes × volts) relationships for fuel cells containing G. sulfurreducens shown in Fig. 1. Open symbols represent the current produced from the oxidation of acetate in a fuel cell after the initial growth of cells in the electrode chamber. Closed symbols represent current produced from the oxidation of acetate in the fuel cell after the medium was replaced the second time.

Daniel R. Bond, et al. Appl Environ Microbiol. 2003 March;69(3):1548-1555.
5.
FIG. 4.

FIG. 4. From: Electricity Production by Geobacter sulfurreducens Attached to Electrodes.

Growth and current production by G. sulfurreducens in a chamber containing a graphite electrode poised at +200 mV versus an Ag/AgCl reference and effect of removing the growth medium and replacing it with anaerobic buffer plus acetate as the electron donor. Acetate (0.5 mM) was provided after replacing the medium, followed by a second pulse of 1 mM.

Daniel R. Bond, et al. Appl Environ Microbiol. 2003 March;69(3):1548-1555.
6.
FIG. 1.

FIG. 1. From: Electricity Production by Geobacter sulfurreducens Attached to Electrodes.

Current production by G. sulfurreducens in a microbial fuel cell. Cells were inoculated into an anaerobic chamber containing growth medium (5 mM acetate) and a graphite electrode connected to another electrode in an aerobic chamber. At the indicated times, medium was removed and replaced with sterile, anaerobic salts buffer plus 5 mM acetate.

Daniel R. Bond, et al. Appl Environ Microbiol. 2003 March;69(3):1548-1555.
7.
FIG. 3.

FIG. 3. From: Electricity Production by Geobacter sulfurreducens Attached to Electrodes.

Growth and current production by G. sulfurreducens inoculated into a chamber containing a graphite electrode poised at +200 mV versus an Ag/AgCl reference. Acetate (1 mM) was provided with the initial inoculum, and pulses of 1 mM acetate were given at the times indicated to demonstrate acetate-dependent growth. Inset gives data for current on a semilogarithmic scale to show exponential growth.

Daniel R. Bond, et al. Appl Environ Microbiol. 2003 March;69(3):1548-1555.

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