Archaea / 2013 / Article / Fig 4

Research Article

A Single-Culture Bioprocess of Methanothermobacter thermautotrophicus to Upgrade Digester Biogas by CO2-to-CH4 Conversion with H2

Figure 4

Bioreactor performance for Experiment 3. Volumetric methane production rates (a) and hydrogen conversion efficiencies (b) for bioreactor runs in which the methane influent rate was varied between 0 and 0.4 L/min. Data were gathered for three different hydrogen influent rates. The error bars represent the observed variance between runs for each bioreactor condition.