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Appendix 2: Emission factors for industrial processes

Table 1 – Producing Iron or Steel
    Emission Factor (tonne/tonne) Total
Emission Source Category Emission Source by activity Oxidation Factor
(CO2 only)
CO2
(GWP=1)
CH4
(GWP=21)
N2O
(GWP=310)
tCO2-e/t
Producing iron or steel Mass reducing agents NA 3.67 NA NA 3.67
Uncalcined limestone NA 0.44 NA NA 0.44
Uncalcined dolomitic limestone NA 0.48 NA NA 0.48
Carbon inputs NA 3.67 NA NA 3.67
Table 2 – Producing Aluminium
    Emission Factor (tonne/tonne) Total
Emission Source Category Emission Source by activity Oxidation Factor
(CO2 only)
CO2
(GWP=1)
CH4
(GWP=21)
N2O
(GWP=310)
tCO2-e/t
Producing aluminium Consumption of anodes NA 3.67 NA NA 3.67
Table 3 – Producing Clinker or Burnt Lime
    Emission Factor (tonne/tonne) Total
Emission Source Category Emission Source by activity Oxidation Factor
(CO2 only)
CO2
(GWP=1)
CH4
(GWP=21)
N2O
(GWP=310)
tCO2-e/t
Producing clinker Production of clinker NA 0.54 NA NA 0.54
Producing burnt lime Production of burnt lime NA 0.79 NA NA 0.79
Production of burnt dolomite NA 0.91 NA NA 0.91

Table 4 – Producing Glass
    Emission Factor (tonne/tonne) Total
Emission Source Category Emission Source by activity Oxidation Factor
(CO2 only)
CO2
(GWP=1)
CH4
(GWP=21)
N2O
(GWP=310)
tCO2-e/t
Producing glass            
Soda ash NA 0.42 NA NA 0.42
Uncalcined limestone NA 0.44 NA NA 0.44
Uncalcined dolomite NA 0.48 NA NA 0.48
Table 5 – Producing Gold
    Emission Factor (tonne/tonne) Total
Emission Source Category Emission Source by activity Oxidation Factor
(CO2 only)
CO2

(GWP=1)
CH4

(GWP=21)
N2O
(GWP=310)
tCO2-e/t
Producing gold            
Uncalcined limestone NA 0.44 NA NA 0.44
Uncalcined dolomite NA 0.48 NA NA 0.48
Table 6 – Producing Cable
  Emission Factor (tonne/tonne) Total
Emission Source Category Oxidation Factor
(CO2 only)
CO2
(GWP=1)
CH4
(GWP=21)
N2O
(GWP=310)
tCO2-e/t
Using the nitrogen cure process N/A N/A N/A 486.7 486.7