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Table 7 Main results from process analysis for methanol, ethanol, 1-butanol, i-octanol, and DME taken from Schemme et al. [74]. Base case: 4.6 €/kg H2, 70 €/t CO2, interst rate: 8%, process steam: 32 €/t, cooling water: 0.1 €/t, operating electricity: 9.76 €ct/kWh

From: Thermodynamic and ecological preselection of synthetic fuel intermediates from biogas at farm sites

Substance

Methanol

Ethanol

1-Butanol

i-Octanol

DME

Cost base case/€/lDE

1.89

2.22

2.53

2.85

1.85

Energy demand/MJ/lDE

62

70

79

86

60

Efficiency PTF/%

58

51

46

42

60

Excess heat/MJ/lDE

3

6

9

8

0

CAPEX/€

235

432

673

1137

298