Fig. 1. Accumulated methane production over time (days) for anaerobically digested organic municipal waste and cellulose. The methane production was measured in batch tests (triplicates) at seven temperatures: 5, 10, 15, 22, 28, 35, and 55°C. Nm3, cubic meter at 0°C and 1 atmosphere pressure; VS, volatile solids in the organic waste.