40
L. S. Franca et al.
Table 1 Emission
conversion factors for
agricultural activities
Activity
Emission conversion factor
Unit of measure
Value
Enteric
fermentation
0.91
t CO 2 e·animal −1
Manure
management
0.01
t CO 2 e·kg N −1
Rice cultivation
1.36
t CO 2 e·ha −1
Synthetic
fertilizers
0.01
t CO 2 e·kg
nutrient −1
Manure applied
to soils
0.01
t CO 2 e·kg N −1
Manure left in the
pasture
0.01
t CO 2 e·kg N −1
Crop residues
0.01
t CO 2 e·kg
nutrient −1
Cultivation of
organic soils
7.48
t CO 2 e·ha −1
Crop residues
burning
0.08
t CO 2 e·t dry
mass −1
Savanna burning 0.76
t CO 2 e·ha −1
GHG emissions associated to the agricultural activities and the consecutively food
supply chain steps until it arrives at the final consumer.
So, for the evaluation of food waste management carbon footprint, the current
and alternative scenarios considered for this analysis are presented in Fig. 2.
Fig. 2 Current and alternative scenarios
L. S. Franca et al.
Table 1 Emission
conversion factors for
agricultural activities
Activity
Emission conversion factor
Unit of measure
Value
Enteric
fermentation
0.91
t CO 2 e·animal −1
Manure
management
0.01
t CO 2 e·kg N −1
Rice cultivation
1.36
t CO 2 e·ha −1
Synthetic
fertilizers
0.01
t CO 2 e·kg
nutrient −1
Manure applied
to soils
0.01
t CO 2 e·kg N −1
Manure left in the
pasture
0.01
t CO 2 e·kg N −1
Crop residues
0.01
t CO 2 e·kg
nutrient −1
Cultivation of
organic soils
7.48
t CO 2 e·ha −1
Crop residues
burning
0.08
t CO 2 e·t dry
mass −1
Savanna burning 0.76
t CO 2 e·ha −1
GHG emissions associated to the agricultural activities and the consecutively food
supply chain steps until it arrives at the final consumer.
So, for the evaluation of food waste management carbon footprint, the current
and alternative scenarios considered for this analysis are presented in Fig. 2.
Fig. 2 Current and alternative scenarios