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Table 3 Energy balance and energy ratio of sorghum ethanol pathways

From: Life-cycle energy use and greenhouse gas emissions of production of bioethanol from sorghum in the United States

  I II III(a) III(b) IV V(a) V(b)
Energy balance, MJa/Liter 10.4 17.0 16.8 17.2 12.5 15.4 15.7
Energy ratio 2.0 4.9 4.7 5.2 2.4 3.6 3.8
  1. a Lower heating value.