Oxidation of methane from manure storages in soils

Figures & data

Figure 1. Enhanced methane oxidation in top-layers of landfills.

Table 1. Model parameters for calculation of methane emissions from manure storage (based on van der Hoek and van Schijndel 2006).

	Manure production (ton/animal/year)^1	Initial methane potential (m^3/ton manure)	k summer (1/day)	k winter (1/day)
Milk cows	19.5	16	0.0028	0.0014
Slaughter pigs	1.2	20.4	0.0061	0.0031
Sows	5.1	11.9	0.0061	0.0031
Note: ^1Including flushing water.

Figure 2. Capture of methane from a manure basin.

Figure 3. Methane generation from a manure storage (straight line) and methane oxidation (dotted line) in soil near a stable with 80 milking cows and a 100 m² oxidation field.

Figure 4. Methane generation from a manure storage (straight line) and methane oxidation (dotted line) in soil for a 2500 m³ storage basin in the field, with a 600 m² oxidation field.

Table 2. Costs of methane oxidation near a manure storage.

	Manure silo (floating roof)	Manure basin
Capacity	1000 m^3	2500 m^3
Size oxidation field	100 m^2	600 m^2
Costs manure storage	€ 30.000	€ 40.000
Methane oxidation	€ 890	€ 3.000
Specification methane oxidation
Gas collection at manure storage	€ 100	€ 150
Dispersion layer	€ 530	€ 2.000
Work (digging)	€ 260	€ 840

Table 3. Cost-effectiveness.

Average effectiveness (g m^−2 hr^−1)	2	2	3	3
Costs oxidation field (€ m^−2)	5	10	5	10
Emission reduction (kg m^−2 jr^−1)	18	18	26	26
Costs (€ m^−2 jr^−1)	0.82	1.63	0.82	1.63
Cost-effectiveness (€ kg^−1 methane)	0.047	0.093	0.031	0.062
Cost-effectiveness (€ Gg^−1 CO2-eq.)	1.9	3.7	1.2	2.5