FIGURE 6.

Inhibition of sulfate reduction by tSRB with nitrite. A tSRB consortium enriched at 60°C (Figure 5) was grown at this same temperature in medium with 20 mM lactate and 10 mM sulfate. The concentrations of (A) sulfide and (B) sulfate are shown as a function of time. Nitrite was injected at midlog phase (↓) in concentrations as indicated.