Environmental Engineering Reference
In-Depth Information
Table 2. Waste component characterisation for the study case site and assumed values for chemical composition,
moisture and biodegradability
Component
characterization %
C
%SS
H
%SS
O
%SS
N
%SS
S
%SS
Inert
%SS
Moisture
%
Biodegradability
%
Organic fraction
17,53%
28,70%
3,10%
29,20%
1,90%
0,60%
36,50%
70,00%
82%
Paper and cardboard
32,20%
44,40%
4,40%
40,90%
0,10%
0,30%
9,90%
5,50%
50%
Plastics
16,83%
70,50%
11,50%
11,30%
0,90%
0,90%
4,90%
2,00%
0%
Textile
6,20%
39,60%
6,50%
25,30%
5,60%
0,70%
22,30%
10,00%
54%
Pruning scrap
2,46%
45,50%
8,70%
20,10%
1,80%
0,20%
23,70%
60,00%
60%
Wood
6,31%
49,50%
6,00%
42,70%
0,20%
0,10%
1,50%
20,00%
72%
Glass and inert
10,61%
0,50%
0,10%
0,40%
0,10%
0,00%
98,90%
2,00%
0%
Metals
3,86%
0,50%
0,60%
4,30%
0,10%
0,00%
94,50%
3,00%
0%
Sewage sludge
4,00%
47,07%
6,74%
26,43%
5,97%
2,24%
11,54%
70%
57,5%
Table 3. Values assumed for gas generation rate constant, rise phase gas generation rate constant (for modified first order model),
potential gas generation capacity and lag time of materials with different biodegradation velocity
L
0
[Nm
3
/t] L
0
[Nm
3
/t]
k [1/year]
k [1/year]
Lag Time [year]
s [1/year]
Rapidly biodegradable
fractions
Organic fraction
Pruning scrap
0,36
13,44
0,3
1,155
Calculated as
weighted
average*
Calculated as
weighted
average*
0,139
Moderately biodegradable
fractions
0,15
29,54
2
0,346
Paper and cardboard
Textile
Wood
Sewage sludge
24,59
Slowly biodegradable fractions
0,07
29,69
5
0,231
* input to LandGEM
