Skip to main content

Table 6 Energy input at the stage of bio-ethanol production stage

From: Assessing the sweet sorghum-based ethanol potential on saline–alkali land with DSSAT model and LCA approach

Procedure or Item Energy input Energy avoided
Electricity (kWh/t ethanol) [30, 40,41,42] Coal (kg/t ethanol) [30, 40,41,42] Steam (t/t ethanol) [30] Other inputa (t/t ethanol) [30] By-productb (t/t ethanol) [30]
Pretreatment 95
Fermentation 50 0.2
Rectification 25 2.4
Dehydration 40 1.9
Residue handling 143 49.88
Accessory equipment 20 611.2
By-product production 106 –1.18
Denaturing 7.416
Quantity sum 486.42 611.2 4.5 49.88 –1.18
Energy intensity (MJ/t) 3.6 29.27 2637.61 98.70 14,670.00
Energy sum (MJ/t ethanol) 1751.10 17,889.82 11,869.25 4923.58 17,310.60
Summary 19,123.15
  1. aOther energy input mainly includes hot air
  2. bBy-product mainly refers to the solid granular fuel produced in the process of bio-ethanol production