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Table 3 Inputs used in the biorefinery and environmental impact data

From: Greenhouse gas performance of biochemical biodiesel production from straw: soil organic carbon changes and time-dependent climate impact

Input

GWP (g CO2 eq)

Fossil energy (MJ)

Diesel (MJ)a

80.5

1.19

Nitrogen fertiliser (kg N)b

5630

48.9

Sulphuric acid (kg)c

123

2.12

Enzymes (kg product)d

985

12.8

Ammonia (kg N)e

2110

41.7

Hexane (kg)f

904

60.9

Methanol (kg)g

2210

37.4

NaOHh

2190

42.7

H3PO i4

1670

23.5

Electricity (natural gas) (MJ)j

121

1.88

  1. aGWP calculated based on [40] and fossil energy use [41]
  2. bGreenhouse gases and energy [42]
  3. c[43] (process: sulphuric acid, liquid, at plant, RER)
  4. dPersonal communication, Jesper Kløverpris, 2016
  5. e[43] (process: ammonia, liquid, at regional storehouse, RER)
  6. f[43] (process: hexane, at plant, RER)
  7. g [43] (process: methanol, at plant, GLO) emissions of CO2 during combustion added
  8. h [43] (process: sodium hydroxide, 50% in H2O, production mix, at plant, RER)
  9. i[43] (process: phosphoric acid, industrial grade, 85% in H2O, at plant, RER)
  10. jCalculated based on [40] and 58% efficiency