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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
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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