Report - DCE - Nationalt Center for Miljø og Energi

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&NJTTJPO GBDUPST
The emission from composting strongly depends on both the composition of
the treated waste and on process conditions such as aeration, mechanical
agitation, moisture control and temperature pattern. (Amlinger et al., 2008).
The emission factors stated in Table 7.12 are considered the best available for
the calculation of Danish national emissions from composting.
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Emission factors for composting of GPW waste and for home composting of garden
and vegetable food waste are derived from Boldrin et al. (2009). No other
sources were found that describe the emission from home composting.
Two other sources provide emission factors for composting of GPW; Amlinger et
al. (2008) and Hellebrand (1998). All three sources give very similar data. Boldrin
et al. (2009) is the chosen source since this is a Danish report based on experiments
from Danish waste and composting methods.
Emissions from Boldrin et al. (2009) are given in percentage of total degraded
carbon or nitrogen respectively. The factors shown in Table 7.12 are calculated
by assuming 37.5 % DOC in dry matter, 2 % N in dry matter and 50 % moisture
in the waste.
Emission factors for composting of organic municipal waste and sludge are given
by Amlinger et al. (2008). Pagans et al. (2006) delivers similar emissions for
NH3 from these waste categories but do not consider any other pollutants. Amlinger
et al. (2008) is chosen as the most recent and thorough source to these
data.
&NJTTJPOT
Table 7.13 show the total national emissions from composting. The full time series
is shown in Annex 2D Table 2D-6.