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Table 4 Comparison of predicted amperages and power outputs of the three modes

From: Model-driven elucidation of the inherent capacity of Geobacter sulfurreducens for electricity generation

 

Conditions

Biomass growth rate (h-1)

Electron (mmol gDW-1h-1)

Amperage (A gDW-1)

Coulombic efficiency (CE%)

Theoretical limit of the power output (W gDW-1)

MET

The growth rate achieved in the acetate limiting condition)

0.06

98.94

2.652

68.71%

2.201

DET

133.2

3.570

92.50%

0.9139

Mixed mode

  

116.8

3.131

81.13%

2.599

MET

5% of the maximum growth rate

0.033

103.4

2.771

71.79%

2.300

DET

138.4

3.710

96.12%

0.950

Mixed mode

  

122.1

3.272

84.78%

2.716

  1. Note: c-type cytochrome c and NADH have different standard potentials. The power density for the Mixed mode was calculated by sum of the power contributions from the DET and the MET, i.e., the current output of DET and MET were multiplied with their appropriate voltages respectively.