Table 1 Summary of crop characteristics.

From: An integrated life cycle and water footprint assessment of nonfood crops based bioenergy production

Crop

DM content (t)

CH4 content (%)

Biogas yield (m3 t−1 TS)

TS (% mass)

Maize

33.5

60

196.7

0.223

Sorghum

30.5

50

334.58

0.442

Hybrid pennisetum

33

63

187.53

0.22

  1. DM: dry materials, the measured weight of materials, removal of free water, is kept constant after drying.
  2. TS: total solid, organic and inorganic matters embodied in the materials.
  3. VS: volatile solid, organic matters embodied in the raw materials.
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