57
3.2.1.2. Food production sector (embodied energy)
The following tables (tables 8, 9) describe the types of fertilizer (market label name and
chemical formula), the quantity used per type of crop, and also the energy factor in Gj and
the emission factors expressed in tonnes of CO 2 eq, based on Makhlouf et al. (2019) analysis.
This study models the energy production in the fertilizer sector through an LCA. It also
considers the extraction of basic elements nitrogen, phosphorus, and potassium, the
different transformation processes as well as transportation to the storage plants. However,
it is important to note that the fertilizers spreading on crop fields is accounted for in the
operational energy category, which described fuel consumption per crop land categories. In
the case of operational energy, which represent energy use by engines, the total
consumption statistics were then converted into equivalent emissions using the LHV,
assuming that all engines use diesel.
Table 8. Fertilizers production and the resulting GHGs in the wilaya of Algiers.
Product
Type
Quantity
Energy
Total
energy
Emission
factor
Total
emissions
Market name
Description
Tonne
Gj/tonne
Gj/year
Mt
CO2eq/tonne
Mt
CO2eq/year
Urea
Nitrogenous
fertilizer
4483.5
[-]
0
[-]
[-]
Urea (Sulfazote
26%)
113.3
20.4
2316.1
8.5
958.6
Ammonium
Sulfate
9.2
[-]
0
[-]
0
Ammonium
nitrate (Azofert N
21 %)
4.4
[-]
0
[-]
0
Calcium
ammonium
nitrate (CAN
27%N)
30.0
13.5
404.7
2.46
73.8
TSP (Triple
Superphosphate)
Phosphorous
fertilizers
29.1
13.2
383.0
1.11
32.3
SSP (Single
superphosphate)
0.0
-0.3
0
0.78
0
Other
38.9
0
[-]
Potas K2O
(Potassium oxide)
139.1
0
0.72
100.16
Others
32.9
0
[-]
[-]
NP
Mixed
fertilizers
54.2
0
[-]
[-]
NK
0.0
0
[-]
[-]
PK
1273.3
0
[-]
[-]
NPK (Sulfitepotassium based)
5936.0
11.3
67255.1
1.29
7657.5
Total fertilizers
12 143.8
70 358.8
8 822.3