Figure 1
Visualizations of H 2 used (in mM; left Y axis) and CH 4 (in mM; right Y axis) produced by M. stadtmanae with and without addition of sodium tungstate solution (Na 2 O 4 W) (over 140 hours (X axis). ♦ H2 used with sodium tungstate (Na2O4W), ■ CH4 production with sodium tungstate (Na2O4W), ▴ H2 used without sodium tungstate (Na2O4W), and ● CH4 production without sodium tungstate (Na2O4W).